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< h3 > LameXP - Frequently Asked Questions (FAQ)< / h3 > < br >
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< a name = "6a0b023d" > < / a > < b > Table of contents:< / b > < br >
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< ul >
< li > < a href = "#6a0b023d" > What is LameXP ???< / a >
< li > < a href = "#be0a8459" > What platforms does LameXP run on?< / a >
< li > < a href = "#29065b86" > What output formats (encoders) does LameXP support?< / a >
< li > < a href = "#4e398a46" > What input formats (decoders) does LameXP support?< / a >
< li > < a href = "#96205e91" > My anti-virus program raises an alarm when I try to download/install/launch LameXP. Why is that?< / a >
< li > < a href = "#fd53d98a" > Who created LameXP?< / a >
< li > < a href = "#de1c5e44" > What license is LameXP released under?< / a >
< li > < a href = "#303e5fa7" > Do I have to pay for LameXP? / How can I donate to the authors of LameXP?< / a >
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< li > < a href = "#054010d9" > MP3, AAC or Vorbis - What is the best compressed audio format?< / a >
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< li > < a href = "#411d1257" > What is the difference between the CBR, VBR and ABR rate control modes?< / a >
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< li > < a href = "#71a113b0" > How do I enable AAC/MP4/M4A output (encoding) in LameXP?< / a >
< li > < a href = "#126abc5a" > Is there a way to output ".m4a" or ".aac" files with LameXP?< / a >
< li > < a href = "#ebf016ab" > How do I enable WMA input (decoding) in LameXP?< / a >
< li > < a href = "#9fd53558" > How can I use LameXP as a "portable" application?< / a >
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< li > < a href = "#3d6684e9" > Is there a way to use custom tools (binaries) with LameXP instead of the "built-in" ones?< / a >
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< li > < a href = "#df406578" > The LameXP startup (splash screen) takes very long on my system. What can I do?< / a >
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< li > < a href = "#900a2a6c" > Is there a way to hide/show the LameXP console ("DOS Box") window?< / a >
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< li > < a href = "#9b0a5c32" > Why does application 'xyz' not open the Wave files created by LameXP?< / a >
< li > < a href = "#89cbd3d0" > Why does LameXP run only 'n' parallel instances/threads on my computer?< / a >
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< li > < a href = "#12d077d5" > How can I force LameXP to create ID3 version 2 (ID3v2) tags?< / a >
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< li > < a href = "#d83ab3c6" > Why does LameXP use LAME v3.99 rather than v3.98?< / a > < br >
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< li > < a href = "#4213adbc" > Can LameXP be used to convert/extract tracks from an Audio CD?< / a >
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< li > < a href = "#434f2578" > Why is the maximum normalization level limited to -0.5 dB?< / a >
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< li > < a href = "#e7c9ae2b" > Why do I get the error 'Executable doesn't support Windows compatibility mode' on startup?< / a >
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< li > < a href = "#328b0a18" > Why do I get the error 'Executable requires Windows XP or later' on startup?< / a >
< li > < a href = "#3ffe490e" > Why do I get the error 'The procedure entry point De/EncodePointer could not be located' on startup?< / a >
< li > < a href = "#01922741" > Why do I get the error 'LameXP.exe is not a valid Win32 application' on startup?< / a >
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< li > < a href = "#491aaad9" > Why do I get the error 'A device attached to the system is not functioning' on startup?< / a >
< li > < a href = "#f35cfa24" > How can I translate LameXP to my language or improve an existing translation?< / a >
< li > < a href = "#8dba381f" > Where can I download the latest version of LameXP?< / a >
< li > < a href = "#9c2e273d" > Where can I submit bug reports or feature requests?< / a >
< li > < a href = "#982cf1c0" > Where can I find the LameXP source code?< / a >
< li > < a href = "#a0c1e92b" > What are the prerequisites to build LameXP from the sources?< / a > < / ul >
< br > < br >
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< a name = "6a0b023d" > < / a > < b > What is LameXP ???< / b > < br >
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< br >
LameXP is a graphical user-interface for a number of audio encoders. It was developed to support a huge< br >
number of input formats. File formats are detected reliably using MediaInfo. Compressed audio formats are< br >
decoded to uncompressed Wave files using suitable CLI audio decoders. Furthermore LameXP allows batch< br >
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processing of multiple audio files. Multi-threading is implemented by processing several audio files< br >
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concurrently. All the third-party tools incorporated in LameXP are listed in the "About" dialog. The Nero AAC< br >
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encoder cannot be redistributed due to licensing issues; it is available as a free download from the public< br >
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Nero web-site. Note: LameXP does NOT use/need any "external" audio decoders. It neither requires nor supports< br >
any ACM Codecs or DirectShow/DMO filters! And it will NOT install anything of that kind on your system.< br > < br >
< br > < br >
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< a name = "be0a8459" > < / a > < b > What platforms does LameXP run on?< / b > < br >
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< br >
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LameXP is currently being developed and tested on the following platforms:< br > < ul >
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< li > Microsoft Windows XP, Service Pack 3
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< li > Microsoft Windows 7, 32-Bit and 64-Bit editions< / ul >
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< br >
The following platforms should work as well, but aren't tested extensively:< br > < ul >
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< li > Microsoft Windows XP, Service Pack 2
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< li > Microsoft Windows Vista, 32-Bit and 64-Bit editions
< li > Microsoft Windows Server 2008
< li > Microsoft Windows Server 2008 R2
< li > GNU/Linux using Wine (native Linux version planned)< / ul >
< br >
The following platforms are NOT supported any longer:< br > < ul >
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< li > Microsoft Windows XP, Service Pack 1
< li > Microsoft Windows XP, RTM (i.e. without Service Pack)
< li > Microsoft Windows 2000
< li > Microsoft Windows NT 4.0
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< li > Microsoft Windows Millennium Edition
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< li > Microsoft Windows 98
< li > Microsoft Windows 95< / ul >
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< br > < br >
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< a name = "29065b86" > < / a > < b > What output formats (encoders) does LameXP support?< / b > < br >
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< br >
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Currently the following output formats are supported by LameXP:< br > < ul >
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< li > MPEG Audio-Layer III (MP3), using the < a href = "http://lamexp.sourceforge.net/" target = "_blank" > LAME< / a > encoder [built-in]
< li > Ogg Vorbis, using the < a href = "http://www.xiph.org/vorbis/" target = "_blank" > OggEnc2/libvorbis< / a > encoder with < a href = "http://www.geocities.jp/aoyoume/aotuv/" target = "_blank" > aoTuV< / a > [built-in]
< li > Advanced Audio Coding (AAC), using < a href = "http://www.audiocoding.com/nero_aacenc.html" target = "_blank" > Nero AAC< / a > encoder [separate download!]
< li > ATSC A/52 (aka "AC-3"), using the < a href = "http://aften.sourceforge.net/" target = "_blank" > Aften< / a > encoder [built-in]
< li > Free Lossless Audio Codec (< a href = "http://flac.sourceforge.net/" target = "_blank" > FLAC< / a > ) [built-in]
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< li > Uncompressed PCM / Waveform Audio File (WAV/RIFF)< / ul >
< br > < br >
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< a name = "4e398a46" > < / a > < b > What input formats (decoders) does LameXP support?< / b > < br >
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< br >
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Currently the following input formats are supported by LameXP:< br > < ul >
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< li > AC-3 (ATSC A/52), using Valib decoder [built-in]
< li > Advanced Audio Coding (AAC), using FAAD decoder [built-in]
< li > Apple Lossless (ALAC)
< li > Apple/SGI AIFF
< li > Digital Theater System, using Valib decoder [built-in]
< li > Free Lossless Audio Codec (FLAC)
< li > Microsoft ADPCM
< li > Monkey's Audio (APE)
< li > MPEG Audio-Layer I (MP1), using mpg123 decoder [built-in]
< li > MPEG Audio-Layer II (MP2), using mpg123 decoder [built-in]
< li > MPEG Audio-Layer III (MP3), using mpg123 decoder [built-in]
< li > Musepack
< li > Shorten
< li > Speex
< li > Sun/NeXT Au
< li > The True Audio (TTA)
< li > Uncompressed PCM / Waveform Audio File (WAV/RIFF)
< li > WavPack Hybrid Lossless Audio
< li > Windows Media Audio (WMA), using NCH Software decoder [available as separate download]< / ul >
< br > < br >
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< a name = "96205e91" > < / a > < b > My anti-virus program raises an alarm when I try to download/install/launch LameXP. Why is that?< / b > < br >
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< br >
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Occasionally your anti-virus program may mistakenly(!) detect "malware" (e.g. virus, trojan horse or worm) in< br >
LameXP. This is called a "false positive" and the file is actually innocent/clean. It's an error in your< br >
specific anti-virus software. So in case you encounter such problems, please use < a href = "http://www.virustotal.com/" target = "_blank" > http://www.virustotal.com/< / a > ,< br >
< a href = "http://www.virscan.org/" target = "_blank" > http://www.virscan.org/< / a > or a similar online-service to check the file in question with multiple(!) anti-virus< br >
engines. Especially take care with scan results like "suspicious", "generic" or "packed", as such results are< br >
NOT confirmed malware detections and in almost any case they can be ignored/discarded safely!< br >
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< br >
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Apparently anti-virus programs tend to suspect installers or uninstallers created with < a href = "http://nsis.sourceforge.net/" target = "_blank" > NSIS< / a > . Furthermore some< br >
anti-virus programs blindly suspect all "packed" executables of being malware. Obviously that is a stupid< br >
generalization, so please ignore these nasty warnings! Last but not least: Always keep in mind that LameXP is< br >
OpenSource software. If you don't trust the provided pre-compiled binaries, simply download the < a href = "#982cf1c0" > source codes< / a > ,< br >
search the code for "malicious" functions (you won't find any!) and then < a href = "#a0c1e92b" > compile< / a > your own binary.< br >
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< br >
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Conclusion:< ul >
< li > IN CASE YOU HAVE A CONFIRMED INFECTION, RE-DOWNLOAD THE FILE FROM ONE OF THE *OFFICIAL* MIRRORS!
< li > DO NOT SEND US VIRUS REPORTS, UNLESS YOU HAVE VERIFIED THE INFECTION WITH MULTIPLE ANTI-VIRUS ENGINES!
< li > PLEASE REPORT "FALSE POSITIVES" TO THE DEVELOPER OF YOUR ANTI-VIRUS SOFTWARE. WE CANNOT FIX THEM!< / ul >
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< br > < br >
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< a name = "fd53d98a" > < / a > < b > Who created LameXP?< / b > < br >
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< br >
LameXP was written from the scratch by LoRd_MuldeR < MuldeR2@GMX.de> . However it has to be noted that LameXP< br >
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uses a number of third-party tools, which have been created by the individual authors. Moreover various< br >
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people have contributed LameXP translations. Please see the "About" dialog for details!< br > < br >
< br > < br >
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< a name = "de1c5e44" > < / a > < b > What license is LameXP released under?< / b > < br >
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< br >
LameXP is free software. You can redistribute it and/or modify it under the terms of the GNU General Public< br >
License (GPL) as published by the Free Software Foundation; either version 2 of the License, or (at your< br >
option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY< br >
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.< br >
< br >
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The licenses for most software and other practical works are designed to take away your freedom to share and< br >
change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share< br >
and change all versions of a program - to make sure it remains free software for all its users.< br >
< br >
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Please see the < a href = "http://www.gnu.org/licenses/gpl-2.0.html" target = "_blank" > GNU General Public License< / a > for more details!< br > < br >
< br > < br >
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< a name = "303e5fa7" > < / a > < b > Do I have to pay for LameXP? / How can I donate to the authors of LameXP?< / b > < br >
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< br >
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LameXP is < a href = "http://en.wikipedia.org/wiki/Free_software" target = "_blank" > free software< / a > , so you may use it for free and for any purpose. Moreover the authors of LameXP< br >
currently do NOT accept any donations. Therefore you should NOT pay or donate any money in order to obtain< br >
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LameXP! However it was brought to our attention that some dubious third-party web-sites offer "payed"< br >
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downloads of LameXP and/or include Adware into the LameXP download. We do NOT cooperate with any of these< br >
sites. So if you pay for the LameXP download, the authors of LameXP will not get a single cent! Instead you< br >
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should save your money and download LameXP from the official mirrors (< a href = "#8dba381f" > see below< / a > ), which is 100% free.< br >
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< br >
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If you want to support the development of LameXP, you can do so by contributing translations or code :-)< br > < br >
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< br > < br >
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< a name = "054010d9" > < / a > < b > MP3, AAC or Vorbis - What is the best compressed audio format?< / b > < br >
< br >
This question can NOT be answered in general. The best audio format is the format that works best for you!< br >
< br >
Having said that, there are a few things to consider. First of all: All output formats supported by LameXP,< br >
except for FLAC and PCM/Wave, use a lossy(!) kind of compression. That applies to MP3 and AAC as well as< br >
Vorbis. Consequently with these formats a certain quality loss is unavoidable when re-encoding/converting, no< br >
matter what. This is called "generation loss". Nonetheless all three formats (MP3, AAC and Vorbis) are able< br >
to retain an EXCELLENT audio quality, given that the chosen bitrate (quality level) is sufficient/reasonable.< br >
< br >
Secondly, the audio quality does not depend on the audio format and the chosen bitrate only. It also depends< br >
greatly on the encoder software that is being used. LameXP uses the LAME MP3 encoder, probably the most< br >
sophisticated MP3 encoder out there, the Nero AAC encoder, one of the best AAC encoders available, and the< br >
aoTuV Vorbis encoder, an improved/tuned version of the reference Vorbis encoder. Consequently LameXP provides< br >
you with state-of-the-art encoders, which ensures maximum encoding quality for ALL supported output formats.< br >
< br >
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Another thing to consider is hardware support, i.e. support on stand-alone and portable players. The MP3< br >
format still has the best support on hardware players, but support for AAC/MP4 has become widespread too -< br >
especially on portable devices. Hardware support for Vorbis is more limited, but growing. So if portability< br >
is a priority, then MP3 is a good choice. However the MP3 format does NOT support multi-channel audio, which< br >
means that you will have to use AAC or Vorbis for multi-channel files. Last but not least, if you prefer a< br >
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truly "open" and patent-free audio format, then Vorbis will be the format of your choice!< br >
< br >
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Another resource you might find interesting are Sebastian's Public Listening Tests:< br > < ul >
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< li > < a href = "http://listening-tests.hydrogenaudio.org/sebastian/mp3-128-1/results.htm" target = "_blank" > MP3 listening test @ 128 kbps, includes MP3 encoders (like LAME) only< / a >
< li > < a href = "http://listening-tests.hydrogenaudio.org/sebastian/mf-128-1/results.htm" target = "_blank" > Multiformat listening test @ 128 kbps, includes LAME MP3, Vorbis AoTuV and others< / a >
< li > < a href = "http://listening-tests.hydrogenaudio.org/sebastian/mf-64-1/results.htm" target = "_blank" > Multiformat listening test @ 64 kbps, includes Vorbis AoTuV, Nero AAC and others< / a >
< / ul >
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(However be aware that some of the results from these listening tests are not up-to-date anymore)< br > < br >
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< br > < br >
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< a name = "411d1257" > < / a > < b > What is the difference between the CBR, VBR and ABR rate control modes?< / b > < br >
< br >
CBR means "constant bitrate" and, as the name implies, CBR mode allocates the bits at a constant rate. This< br >
means that each part of the audio will get the same amount of bits, regardless of its content. Obviously this< br >
will waste bits in parts of the audio that are easy to compress. At the same time the quality of parts of the< br >
audio that are hard to compress will be degraded. Consequently using CBR mode is NOT a very good idea, unless< br >
you really have to for some reason. However CBR mode has the advantage that the final size of the compressed< br >
file is perfectly predictable. The resulting file size is defined simply as "duration × fixed bitrate".< br >
< br >
VBR means "variable bitrate" and, in contrast to CBR mode, VBR mode allows the bitrate to vary/fluctuate.< br >
Thus the VBR mode enables the encoder to adapt the bitrate with respect to the content of the audio. Parts of< br >
the audio that are easy to compress will get a lower bitrate in order to safe bits. Parts of the audio that< br >
are hard to compress will get a higher bitrate in order to avoid quality degradation. Or in other words: VBR< br >
mode "moves" the bits to the locations where they are actually needed. Therefore the VBR mode achieves a much< br >
better compression efficiency than the CBR mode, i.e. with VBR mode you can get a better quality at the same< br >
file size, or the same quality at a smaller file size (compared to CBR mode). One disadvantage of the VBR< br >
mode is, however, that the final size of the compressed file can NOT be predicted. The resulting file size is< br >
defined as "duration × average bitrate", but the average bitrate can NOT be known beforehand. That's< br >
because the average bitrate for a specific VBR quality level can vary greatly, depending solely on the< br >
complexity of the individual audio. Nonetheless VBR mode generally should be the preferred encoding mode.< br >
< br >
ABR means "average bitrate". You can think of ABR mode as a compromise between the CBR and VBR mode. With ABR< br >
mode the bitrate is allowed to vary/fluctuate, similar to VBR mode. However the ABR mode doesn't work with a< br >
predefined/fixed quality level, as VBR mode does. Instead in ABR mode the encoder will continuously re-adjust< br >
the quality level in order to hit the target average(!) bitrate. You can also think of ABR mode as a mode< br >
that pre-allocates the bits in a CBR-like fashion and then redistributes the bits within a local neighborhood< br >
as needed. Thus the ABR mode combines advantages of CBR mode (predictability) and VBR mode (good quality).< br >
The final size of the encoded file is still defined as "duration × average bitrate", but with ABR mode the< br >
average bitrate *is* known beforehand. So if you need to hit a specific file size, ABR mode is the solution.< br >
< br >
Hint: The Nero AAC encoder supports a variant of the ABR mode, the so-called "2-Pass" mode. That mode scans< br >
through the entire file once (first pass) before the actual encoding is performed (second pass). This way the< br >
encoder is able to distribute the bits over the entire file and still hit the desired target average bitrate.< br >
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It should be obvious that the advantages of the "2-Pass" mode come at the cost of increased encoding time.< br >
< br >
Hint: A common mistake done by people comparing rate control modes is choosing a bitrate that is too high. Of< br >
course only files of an identical (average) bitrate can be compared by quality. But if that bitrate is chosen< br >
too high, you won't be able to draw any conclusions from the test. That's because at a certain bitrate even< br >
the CBR mode will retain excellent quality. In that situation VBR mode or ABR mode can't give an even better< br >
quality for obvious reasons. But drawing the conclusion that there is no difference between CBR mode and the< br >
VBR/ABR modes would be very wrong! The differences will become significant when using a reasonable bitrate.< br >
Another mistake is starting with a low-quality source file and concluding that all modes perform equally bad.< br >
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< br >
Summary of rate control modes:< br > < ul >
< li > Need to hit a specific fixed file size and still want to retain decent quality? ⇒ ABR mode
< li > Want to retain a certain level of quality and the file size doesn't matter that much? ⇒ VBR mode
< li > Avoid CBR mode by all means, unless there are crude restrictions that force you to use it!< / ul >
< br > < br >
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< a name = "71a113b0" > < / a > < b > How do I enable AAC/MP4/M4A output (encoding) in LameXP?< / b > < br >
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< br >
LameXP uses the Nero AAC Encoder for creating AAC/MP4/M4A files. The Nero AAC Encoder is available as a free< br >
download. However the license doesn't allow redistribution! Therefore we can NOT ship the Nero encoder along< br >
with LameXP. Instead you will have to obtain the Nero encoder as a separate download from the official "Nero< br >
Digital" web-site. Currently you'll find the latest Nero AAC Encoder version at this location:< br > < ul >
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< li > < a href = "http://www.nero.com/deu/downloads-nerodigital-nero-aac-codec.php" target = "_blank" > http://www.nero.com/deu/downloads-nerodigital-nero-aac-codec.php< / a >
< li > < a href = "http://ftp6.nero.com/tools/" target = "_blank" > http://ftp6.nero.com/tools/< / a > < / ul >
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< br >
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After you have downloaded the Nero AAC Encoder as a ZIP file, you must "install" the encoder binaries, so< br >
2011-02-18 16:29:26 +01:00
LameXP can use them. Simply unzip the files 'neroAacEnc.exe', 'neroAacDec.exe' as well as 'neroAacTag.exe' to< br >
the same directory where your LameXP executable ('LameXP.exe') is located. For unzipping the ZIP file you can< br >
use any suitable archiver, such as < a href = "http://rarlabs.com/download.htm" target = "_blank" > WinRAR< / a > or < a href = "http://sevenzip.sourceforge.net/" target = "_blank" > 7-Zip< / a > . Once the required Nero encoder binaries are located in< br >
the LameXP directory, the AAC encoding option should be "enabled" on the next startup of LameXP.< br > < br >
< br > < br >
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< a name = "126abc5a" > < / a > < b > Is there a way to output ".m4a" or ".aac" files with LameXP?< / b > < br >
2011-02-18 16:29:26 +01:00
< br >
LameXP uses the Nero AAC Encoder for AAC encoding. And the Nero encoder always puts the AAC streams into an< br >
MP4 (MPEG-4 Part 14) container - in almost any case that is exactly what you want/need! The one and only< br >
"correct" file extension for MP4 files is '.mp4'. However sometimes the "incorrect" file extension '.m4a' is< br >
used to indicate "audio-only" MP4 files. Even worse: There are some buggy (hardware) players that will< br >
recognize MP4 audio file only with the "incorrect" .m4a extension, but NOT with the "correct" .mp4 extension.< br >
Of course LameXP will save your MP4 files with the "correct" .mp4 extension. But if you need your MP4 files< br >
with an .m4a extension for some reason, you can simply rename(!) these files. This isn't more or less< br >
2011-02-28 17:52:43 +01:00
"incorrect" than saving the files as .m4a directly. After all, an MP4 file remains an MP4 file.< br >
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< br >
Having said that, you should NOT rename any .mp4 or .m4a files to .aac, because these are MP4 files and NOT< br >
"raw" AAC streams. The Nero AAC encoder has NO option to output "raw" AAC streams and usually you don't need< br >
2011-02-28 17:52:43 +01:00
such streams. Still, if you want to extract the "raw" AAC stream from an MP4 file, you can use < a href = "http://www.videohelp.com/tools/mp4box" target = "_blank" > MP4Box< / a > .< br > < br >
2011-02-18 16:29:26 +01:00
< br > < br >
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< a name = "ebf016ab" > < / a > < b > How do I enable WMA input (decoding) in LameXP?< / b > < br >
2011-02-18 16:29:26 +01:00
< br >
WMA input requires the WMA decoder component to be installed on your local computer. Usually LameXP will show< br >
a warning on startup, if the WMA decoder component could not be found. In that case you can simply choose< br >
"Download & Install" in order to install the WMA decoder component on your system. Alternatively you can< br >
also install the WMA decoder component manually by choosing "Install WMA Decoder" from the "Tools" menu. In< br >
any case you must restart LameXP after the WMA decoder component has been installed.< br >
< br >
It has to be noted that the WMA decoder component relies on the Windows Media Format Runtime. All supported< br >
versions of Microsoft Windows should have the Windows Media Format Runtime installed out of the box. However< br >
Wine does not! In case you encounter problems with the WMA decoder component, try downloading and installing< br >
2011-02-24 22:16:07 +01:00
the < a href = "http://www.free-codecs.com/download/Windows_Media_Format_11.htm" target = "_blank" > Windows Media Format 11 Runtime< / a > manually. This should also work under Linux/Wine.< br > < br >
2011-02-18 16:29:26 +01:00
< br > < br >
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< a name = "9fd53558" > < / a > < b > How can I use LameXP as a "portable" application?< / b > < br >
2011-02-16 00:11:59 +01:00
< br >
LameXP always is "portable", in the sense that the application works out of the box: LameXP does NOT require< br >
any additional software, such as codecs, encoders, decoders or runtime libraries, and it will NOT install< br >
anything of that kind on your local computer! All the third-party tools used by LameXP are already built-in.< br >
There currently are two notable exceptions: The Nero AAC encoder and the WMA decoder cannot be redistributed< br >
along with LameXP for legal reasons. Therefore these tools have to be obtained as separate downloads.< br >
< br >
2011-02-16 22:38:13 +01:00
Having said that, LameXP stores its configuration file in the < a href = "http://msdn.microsoft.com/en-us/library/dd378457(v=vs.85).aspx#FOLDERID_LocalAppData" target = "_blank" > %LOCALAPPDATA%< / a > folder on the local computer.< br >
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That's because on a modern multi-user operating this is the only "correct" folder to store user-specific< br >
configuration files. Also it's one of the few folders where an application is guaranteed to get write-access,< br >
even when the application was launched by a "normal" (non-admin) user and did not request elevated rights.< br >
Storing the configuration file in the "install" folder is antiquated and highly error-prone.< br >
< br >
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Still some users may want to store the configuration file in the same folder as the LameXP executable file,< br >
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e.g. when launching LameXP directly from their USB stick on different computers. For this purpose LameXP now< br >
offers a "true" portable mode. You can enable that mode simply by renaming the LameXP executable file to< br >
"LameXP-Portable.exe". But be aware: When running LameXP in the "portable" mode, the user(!) must ensure that< br >
2011-02-26 19:59:01 +01:00
write-access is granted to the directory where the LameXP executable is located.< br > < br >
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< br > < br >
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< a name = "3d6684e9" > < / a > < b > Is there a way to use custom tools (binaries) with LameXP instead of the "built-in" ones?< / b > < br >
< br >
LameXP uses a number third-party tools. All of these tools are already "built-in" (with a few exceptions) and< br >
thus it is NOT required to provide separate binaries. Usually it will NOT be necessary to replace any of< br >
the "built-in" tools with a custom (user-provided) binary. If, however, you need to replace/update/downgrade< br >
one of the binaries for a good reason, the recommended method is re-building LameXP from the sources. If you< br >
don't know how to build LameXP from the sources, then you probably shouldn't be trying to replace the binary.< br >
< br >
Having said that, there now is a more convenient method for using a custom tool version (binary) instead of< br >
the "built-in" one. This method works WITHOUT re-building LameXP. However note that the following is intended< br >
for testing and debugging purposes only! Also note that LameXP was specifically designed to work with the< br >
"built-in" versions of the tools. It may not work properly or may not work at all with custom tool versions!< br >
< br >
In order to replace a "built-in" binary, simply put the user-provided binary to the following location:
< blockquote > < install_folder> \tools\< build_number> \< tool_name> .exe< / blockquote >
If, for example, you want to replace 'lame.exe' in Build #666 of LameXP, you would put it to the this path:
< blockquote > C:\Path to your LameXP install folder\tools\666\lame.exe< / blockquote >
(It is intended that the '< build_number> ' part of the path has to be adjusted with every update of LameXP)< br > < br >
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "df406578" > < / a > < b > The LameXP startup (splash screen) takes very long on my system. What can I do?< / b > < br >
2011-02-16 00:11:59 +01:00
< br >
Starting up LameXP shouldn't take longer than approximately 10 seconds. However it was brought to our< br >
attention that badly optimized anti-virus software can slow down the startup procedure a lot! On our test< br >
system (Windows 7 running on an Intel Core2 Q6600 with 4 GB of RAM) starting up LameXP takes about 3 seconds< br >
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without an anti-virus software and about 6 seconds with the "real-time protection" of Microsoft Security< br >
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Essentials enabled. With other anti-virus software the startup was delayed up to 20 seconds and more!< br >
< br >
So if you think that LameXP is starting up too slow on your system, you should temporarily(!) disable or< br >
uninstall your current anti-virus program and try again. Usually it should be sufficient to disable only the< br >
"real-time protection", "file system protection" or "guard" feature of your anti-virus software. If it turns< br >
2011-02-26 19:59:01 +01:00
out that the startup is significantly(!) faster WITHOUT the anti-virus software, please report the problem to< br >
2011-02-16 00:11:59 +01:00
the developer of the anti-virus software. And, if they don't fix the problem, switch to a better product!< br > < br >
< br > < br >
2011-05-08 19:41:25 +02:00
< a name = "900a2a6c" > < / a > < b > Is there a way to hide/show the LameXP console ("DOS Box") window?< / b > < br >
< br >
2011-05-09 00:23:37 +02:00
It is common for many people to run an alleged "DOS" program inside Windows, using a so-called "DOS Box".< br >
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Everything works fine. But when you try to run such a program in DOS, you get an ugly message "This program< br >
cannot be run in DOS mode". What's wrong? Well, the affected program is NOT a "DOS" one. It is a Windows< br >
Console program. "DOS" is NOT a synonym of Console. And "Windows" is NOT a synonym of GUI (Graphical User< br >
Interface). Both, DOS and Windows programs, can be either Console or GUI. Actually Windows programs can be< br >
Console *and* GUI at the same time, i.e. a Windows GUI program can have a Console attached.< br >
< br >
LameXP is a GUI program for Windows. However it can have a "Debug" console attached. The purpose of this< br >
console is providing users an insight into what's happening behind the scenes. While the console is mainly< br >
intended for developers, it may be helpful for "regular" users too. Nonetheless you usually will NOT need the< br >
console, unless something is going wrong. Therefore the LameXP console is disabled by default in all< br >
"release" builds. You can enable the console by passing the "--console" command-line parameter, if required.< br >
At the same time the console is enabled by default in all "beta" (pre-release) builds of LameXP. You can< br >
2011-05-09 09:54:50 +02:00
still disable the console by passing the "--no-console" command-line parameter, if you don't like it.< br >
< br >
WARNING: Any attempt to close the LameXP console window will kill the application immediately !!!< br > < br >
2011-05-08 19:41:25 +02:00
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "9b0a5c32" > < / a > < b > Why does application 'xyz' not open the Wave files created by LameXP?< / b > < br >
2011-02-23 15:34:02 +01:00
< br >
Some of the decoders used in LameXP will insert an additional 'JUNK' chunk into the Wave/RIFF file, right< br >
before the 'fmt' chunk ("Wave header"). There are technical reasons why this 'JUNK' chunk (placeholder) might< br >
be needed at the beginning of the file. The 'JUNK' type is a standard RIFF type and, by definition of the< br >
RIFF file format specification, any reading application must ignore/skip all 'JUNK' chunks it may encounter!< br >
Evidently most reading applications do so and thus will correctly open the Wave file. Unfortunately it was< br >
brought to our attention that there are a few broken(!) applications, which reject Wave/RIFF files with an< br >
additional 'JUNK' chunk in front of the 'fmt' chunk. It seems that these applications make false assumptions< br >
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and expect the 'fmt' chunk to be located at a fixed position, rather than parsing the RIFF structure.< br >
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< br >
While it is evident that applications, which reject the Wave/RIFF file because of the extra 'JUNK' chunk, are< br >
broken with respect to the RIFF specification and should be fixed by the respective author, there is an easy< br >
2011-02-24 22:16:07 +01:00
workaround: Re-saving the Wave/RIFF file with < a href = "http://sox.sourceforge.net/" target = "_blank" > SoX< / a > creates a file that even the broken applications seem to< br >
2011-02-23 15:34:02 +01:00
accept, as SoX apparently doesn't insert any 'JUNK' chunks (although it would be free to do so!) Re-saving< br >
your Wave file with SoX does NOT change the actual content at all, as long as no additional filters are used.< br >
< br >
You can use a command-line like this:< br >
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< blockquote > sox.exe "c:\some path\input.wav" "c:\some path\output.wav"< / blockquote >
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< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "89cbd3d0" > < / a > < b > Why does LameXP run only 'n' parallel instances/threads on my computer?< / b > < br >
2011-02-26 19:59:01 +01:00
< br >
By default LameXP will detect the number of CPU cores that are available on your system and run as many< br >
encoder/decoder instances in parallel as CPU cores are available. This is done in order to maximize the CPU< br >
usage on modern multi-core processors and thus speed up the overall encoding process. However be aware that< br >
the number of instances that can run in parallel is also limited by the number of files you are converting.< br >
Consequently the number of instances that will run in parallel is the minimum(!) of the number of CPU cores< br >
and the number of files to convert. Moreover the number of parallel instances is currently bounded at four!< br >
< br >
Limiting the maximum number of parallel instances to exactly four might seem somewhat arbitrary. But the more< br >
instances are running in parallel, the more instances will be competing for the hard disk. At some point this< br >
will result in "HDD trashing" and actually slow down the encoding process! The limit will prevent this< br >
situation on computers with a lot of CPU cores. If, however, you want to use even more (or fewer) instances,< br >
then you can use LameXP's option to manually overwrite the maximum number of parallel instances/threads.< br >
< br >
Also be aware that LameXP only controls the number of instances that will run in parallel, but it does NOT< br >
control how many threads an individual instance will create! Some encoders use "built-in" multi-threading and< br >
2011-03-02 19:27:49 +01:00
thus a single encoder instance may create several threads - LameXP has no control over that.< br > < br >
2011-02-26 19:59:01 +01:00
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "12d077d5" > < / a > < b > How can I force LameXP to create ID3 version 2 (ID3v2) tags?< / b > < br >
2011-03-19 18:16:35 +01:00
< br >
The LAME encoder automatically chooses the proper ID3 tag version. By default it will create a version 1 tag,< br >
if possible. Only if the information cannot be embedded into a version 1 tag (ID3v1), e.g. because the string< br >
is too long or the string contains Unicode characters, a version 2 tag (ID3v2) will be added. This behavior< br >
is advisable, because devices that support ID3v2 tags should also be able to read ID3v1 tags - but this< br >
doesn't apply the other way around! Moreover embedding an ID3v1 and an ID3v2 tag at the same time, although< br >
the information would have fit into a single ID3v1 tag, means an unnecessary redundancy!< br >
< br >
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If, however, you need to enforce the creation of an ID3v2 tag for some reason, you can use the "--add-id3v2"< br >
2011-04-04 14:55:46 +02:00
parameter for that purpose. Simply add the parameter to the "Custom Encoder Parameters" for LAME.< br >
< br >
That's what the LAME help says about ID3 tags:< br >
< blockquote > A version 2 tag will NOT be added unless one of the input fields< br >
won't fit in a version 1 tag (e.g. the title string is longer than 30< br >
characters), or the '--add-id3v2' or '--id3v2-only' options are used,< br >
or output is redirected to stdout.< / blockquote >
2011-03-19 18:16:35 +01:00
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "d83ab3c6" > < / a > < b > Why does LameXP use LAME v3.99 rather than v3.98?< / b > < br >
2011-03-24 16:04:29 +01:00
< br >
LAME v3.99 contains the latest improvements and bugfixes of the LAME mp3 encoder, but it's less tested than< br >
the older 3.98 release series. The most important reason why LAME v3.99 is used in LameXP v4.xx is because< br >
LameXP v4.xx focuses on proper Unicode support, but LAME v3.98 did NOT support Unicode filenames or Unicode< br >
meta tags (through the CLI front-end, on the Windows platform). However LAME v3.99 finally does!< br >
< br >
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So far we have not encountered any noteworthy problems with LAME v3.99. If, however, you encounter a problem< br >
2011-03-24 16:04:29 +01:00
with LAME v3.99, please report your finding to the < a href = "http://lame.sourceforge.net/contact.php" target = "_blank" > LAME development team< / a > . Do NOT submit any LAME-specific bug< br >
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reports to the LameXP developers, as we generally cannot analyze/fix problems specific to the LAME encoder.< br > < br >
2011-03-24 16:04:29 +01:00
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "4213adbc" > < / a > < b > Can LameXP be used to convert/extract tracks from an Audio CD?< / b > < br >
2011-03-19 19:50:26 +01:00
< br >
LameXP can be used to convert audio files that have been extracted from an Audio CD, but it can NOT extract< br >
or read the audio tracks from the Audio CD directly (yet). Consequently you will have to extract ("rip") the< br >
audio tracks first, before you can convert them with LameXP. We recommend using the < a href = "http://www.exactaudiocopy.de/" target = "_blank" > Exact Audio Copy< / a > software< br >
for that purpose. When ripping tracks from an Audio CD you should always save the tracks as uncompressed Wave< br >
files or as lossless FLAC files! This will avoid a quality loss during the extraction/ripping process.< br >
< br >
Warning: The Windows operating system will show CDA files (such as "Track01.cda") on an Audio CD. These are< br >
dummy/fake files! Actually an Audio CD does NOT contain a file system and thus there are NO files. There only< br >
are audio tracks on an Audio CD. These audio tracks can be extracted as files (e.g. Wave Audio files) using a< br >
ripping software and then the extracted files can be converted. At the same time any attempt to copy/convert< br >
the '.cda' files directly is destined to fail (as the '.cda' files do NOT actually contain any audio data).< br > < br >
< br > < br >
2011-05-07 15:50:21 +02:00
< a name = "434f2578" > < / a > < b > Why is the maximum normalization level limited to -0.5 dB?< / b > < br >
< br >
When an analogue [audio] signal is converted to the digital domain, the signal is sampled at a fixed rate< br >
(e.g. 44100 samples per second) and each "sample" value is stored with a fixed number of bits (e.g. 16 or 24< br >
bits per sample). Consequently [uncompressed] digital audio is represented as a sequence of binary sample< br >
values. The range of possible sample values is determined by the word size ("bits per sample"). For example< br >
with a word size of 16 bit, the minimum value is − 32768 and the maximum value is 32767 - assuming the values< br >
are signed. The range of the sample values corresponds to the voltage range of the electrical input signal.< br >
The maximum digital sample value (i.e. 32767 at 16-Bit) often is referred to as 0dBFS (0dB "full scale").< br >
< br >
Performing a Normalization in the digital domain seems straightforward: We simply multiply all sample values< br >
with the same factor. And we choose this factor in such a way that the highest sample value(s) in the track< br >
will become exactly 0dBFS after the normalization has been performed. However one needs to be aware that when< br >
playing back the digital audio track, it needs to be converted back to an analogue signal. The D/A converter< br >
will convert each sample from its binary representation to the corresponding voltage. Then a "reconstruction"< br >
filter will be applied in order to recover a continuous signal from these individual voltages. And for the< br >
reconstructed analogue signal it is possible to have voltages that are higher than the highest digital sample< br >
in the audio track! This is illustrated in the following image (samples are represented as tiny squares):< br >
< br >
< a target = "_blank" href = "http://img3.imageshack.us/img3/9153/sine0dbfs.png" > < img src = "http://img3.imageshack.us/img3/9153/sine0dbfs.th.png" border = "0" > < / a > < br >
< br >
Consequently normalizing the sample values to 0dBFS is NOT a very good idea, as this may very well result in< br >
a reconstructed analogue signal which exceeds(!) 0dBFS. And, as the analogue parts of the playback equipment< br >
generally are NOT prepared for +0dBFS voltages, this may cause problems, such as annoying distortions!< br >
< br >
The help document of a well-known audio editing software contains the following advice:< br >
2011-05-08 19:41:25 +02:00
< blockquote > If you're planning to put normalized audio on CD, you might want to normalize the waveforms to< br >
2011-05-07 15:50:21 +02:00
no more than 96% [-0.36 dB] as some audio compact disc players have problems accurately reproducing< br >
bits that have been processed to 100% (maximum) amplitude [0dBFS].< / blockquote >
For details please refer to the following article:< br > < ul >
< li > < a href = "http://www.audioholics.com/education/audio-formats-technology/issues-with-0dbfs-levels-on-digital-audio-playback-systems" target = "_blank" > http://www.audioholics.com/...issues-with-0dbfs-levels-on-digital-audio-playback-systems< / a > < / ul >
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "e7c9ae2b" > < / a > < b > Why do I get the error 'Executable doesn't support Windows compatibility mode' on startup?< / b > < br >
2011-03-12 01:50:43 +01:00
< br >
2011-03-15 20:30:10 +01:00
LameXP was designed to run on all supported platforms natively (except for Linux/Wine). If you see this error< br >
message, that's probably because your system is configured to run LameXP in 'compatibility mode', i.e. your< br >
2011-03-13 20:55:51 +01:00
system will pretend an older OS version than is actually running. In Windows Explorer you can disable(!) the< br >
2011-03-12 01:50:43 +01:00
compatibility mode by right-clicking on the 'LameXP.exe' file, choosing 'Properties' from the context menu,< br >
switching to the 'Compatibility' tab and un-checking the 'Run this program in compatibility mode' option.< br > < br >
< br > < br >
2011-04-08 15:36:41 +02:00
< a name = "328b0a18" > < / a > < b > Why do I get the error 'Executable requires Windows XP or later' on startup?< / b > < br >
< a name = "3ffe490e" > < / a > < b > Why do I get the error 'The procedure entry point De/EncodePointer could not be located' on startup?< / b > < br >
< a name = "01922741" > < / a > < b > Why do I get the error 'LameXP.exe is not a valid Win32 application' on startup?< / b > < br >
2011-03-12 01:50:43 +01:00
< br >
2011-03-12 21:58:46 +01:00
You are trying to run LameXP on a platform that is NOT supported, such as Windows 95, Windows 98, Windows< br >
2011-04-08 15:36:41 +02:00
Millennium Edition, Windows NT 4.0 or Windows 2000. There is nothing you can do about that, except for< br >
updating to a less antiquated OS. Running an outdated and unsupported OS is a severe security risk anyway!< br >
< br >
LameXP won't run on the 'RTM' release of Windows XP (no service packs) either. Service Pack 2 or newer is< br >
required! If needed, you can download Service Pack 3 for Windows XP as < a href = "http://www.microsoft.com/downloads/en/details.aspx?FamilyID=5b33b5a8-5e76-401f-be08-1e1555d4f3d4" target = "_blank" > network installation< / a > or as < a href = "http://www.microsoft.com/downloads/en/details.aspx?FamilyID=2FCDE6CE-B5FB-4488-8C50-FE22559D164E" target = "_blank" > ISO image< / a > .< br >
Finally this error can also occur, if your system has been configured to run LameXP in < a href = "#e7c9ae2b" > compatibility mode< / a > .< br >
2011-03-13 20:55:51 +01:00
< br >
2011-04-08 22:01:15 +02:00
Remark: Executables compiled with Microsoft Visual Studio 2010 won't run on Windows 2000 or older (< a href = "http://msdn.microsoft.com/en-us/library/ws0swas0(v=VS.100).aspx" target = "_blank" > details< / a > ).< br > < br >
2011-03-12 01:50:43 +01:00
< br > < br >
2011-03-28 21:09:40 +02:00
< a name = "491aaad9" > < / a > < b > Why do I get the error 'A device attached to the system is not functioning' on startup?< / b > < br >
2011-03-15 11:44:48 +01:00
< br >
2011-03-15 20:30:10 +01:00
This error message from the Windows operating system is somewhat misleading. It often appears together with< br >
a second error message and it means that Windows was unable to load/execute the program file. There are< br >
various reasons why this error might occur, but usually it indicates that you are trying to run LameXP or the< br >
LameXP setup/update program on a platform that is NOT supported, such as Windows 95, Windows 98, Windows< br >
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Millennium Edition, Windows NT 4.0 or Windows 2000. There is nothing you can do about that, except for< br >
updating to a less antiquated OS. Running an outdated and unsupported OS is a severe security risk anyway!< br >
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< br >
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Remark: Executables compiled with Microsoft Visual Studio 2010 won't run on Windows 2000 or older (< a href = "http://msdn.microsoft.com/en-us/library/ws0swas0(v=VS.100).aspx" target = "_blank" > details< / a > ).< br > < br >
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< br > < br >
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< a name = "f35cfa24" > < / a > < b > How can I translate LameXP to my language or improve an existing translation?< / b > < br >
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< br >
Please see the guide for translators at:< br > < ul >
< li > < a href = "http://mulder.brhack.net/public/doc/lamexp_translate.html" target = "_blank" > http://mulder.brhack.net/public/doc/lamexp_translate.html< / a > < / ul >
< br > < br >
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< a name = "8dba381f" > < / a > < b > Where can I download the latest version of LameXP?< / b > < br >
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< br >
The latest "official" release of LameXP can be found on the following mirrors:< br > < ul >
< li > < a href = "https://github.com/lordmulder/LameXP/downloads" target = "_blank" > https://github.com/lordmulder/LameXP/downloads< / a >
< li > < a href = "http://sourceforge.net/projects/lamexp/files/" target = "_blank" > http://sourceforge.net/projects/lamexp/files/< / a >
< li > < a href = "http://code.google.com/p/mulder/downloads/list" target = "_blank" > http://code.google.com/p/mulder/downloads/list< / a > < / ul >
< br > < br >
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< a name = "9c2e273d" > < / a > < b > Where can I submit bug reports or feature requests?< / b > < br >
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< br >
The preferred place to report bugs or request new features is the LameXP thread at Doom9's Forum:< br > < ul >
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< li > < a href = "http://forum.doom9.org/showthread.php?t=157726" target = "_blank" > http://forum.doom9.org/showthread.php?t=157726< / a > (English)
< li > < a href = "http://forum.gleitz.info/showthread.php?t=37956" target = "_blank" > http://forum.gleitz.info/showthread.php?t=37956< / a > (German)< / ul >
< br >
Please do NOT send me E-Mail unless you really have to! I receive a LOT of E-Mail and your mail can get lost!< br > < br >
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< br > < br >
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< a name = "982cf1c0" > < / a > < b > Where can I find the LameXP source code?< / b > < br >
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< br >
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LameXP is developed using the < a href = "http://en.wikipedia.org/wiki/Git_(software)" target = "_blank" > Git< / a > revision control system. The LameXP Git repository is mirrored at:< br > < ul >
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< li > < a href = "git://github.com/lordmulder/LameXP.git" target = "_blank" > git://github.com/lordmulder/LameXP.git< / a > (< a href = "https://github.com/lordmulder/LameXP/commits/master" target = "_blank" > Log< / a > )
< li > < a href = "git://lamexp.git.sourceforge.net/gitroot/lamexp/lamexp" target = "_blank" > git://lamexp.git.sourceforge.net/gitroot/lamexp/lamexp< / a > (< a href = "http://lamexp.git.sourceforge.net/git/gitweb.cgi?p=lamexp/lamexp;a=shortlog;h=HEAD" target = "_blank" > Log< / a > )
< li > < a href = "git://gitorious.org/lamexp/lamexp.git" target = "_blank" > git://gitorious.org/lamexp/lamexp.git< / a > (< a href = "http://gitorious.org/lamexp/lamexp/commits/master" target = "_blank" > Log< / a > )< / ul >
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< br > < br >
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< a name = "a0c1e92b" > < / a > < b > What are the prerequisites to build LameXP from the sources?< / b > < br >
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< br >
LameXP is currently being developed using the following build environment:< br > < ul >
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< li > Visual Studio 2010 with Service Pack 1, running on Windows 7 with Service Pack 1
< li > Desktop Qt v4.7.3 (MSVC 2008), included in Qt SDK v1.1
< li > Windows Platform SDK v7.1 (Windows SDK for Windows 7 and .NET Framework 4)< / ul >
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< br >
Also note the following hints:< br > < ul >
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< li > Run "qtenv2.bat" before launching Visual Studio in order to set up the Qt environment
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< li > Visual Studio 2008 solution/project files are still provided for people targeting Windows 2000
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< li > In order to make a "fully static" build of LameXP, you need to compile Qt as 'static' libraries
< li > The Windows Platform SDK v6.0A should work as well, but there may be a few limitations
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< li > Support for the GNU Toolchain (GCC/MinGW + Make) is planned for a future version< / ul >
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< br >
Instructions to build Qt as 'static' libraries:< br > < ul >
< li > Make sure Visual Studio 2010 and Strawberry Perl for Windows are installed
< li > Install the Qt SDK v1.1 and choose to install the Qt 4.7.3 Sources
< li > Open a new command window (cmd.exe)
< li > Add Strawberry Perl to your PATH (e.g. 'set PATH=C:\strawberry\perl\bin;%PATH%')
< li > Now run 'vcvarsall.bat' form your Visual C++ 2010 install directory
< li > Change the current directory to the Qt Sources path (e.g. 'C:\QtSDK\QtSources\4.7.3')
< li > Finally run 'configure.exe -release -static -ltcg < more options> ' and wait for completion
< li > You can now open and build the solution files (e.g. 'src\corelib\QtCore.sln' in Visual Studio
< li > Make sure you select the "Release" configuration for your builds
< li > It is also recommended to change "C/C++ > Code Generation > Runtime Library" to "/MT"
< li > Libraries you need to build for LameXP include the following:< ul >
< li > lib\qtmain.lib
< li > lib\QtCore.lib
< li > lib\QtGui.lib
< li > lib\QtSvg.lib
< li > lib\QtXml.lib
< li > plugins\imageformats\qgif.lib
< li > plugins\imageformats\qico.lib
< li > plugins\imageformats\qsvg.lib< / ul >
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< li > Put all the *.lib files into the 'LameXP\etc\Prerequisites\qt4_static' folder< / ul >
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< br > < br >
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