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https://github.com/mpv-player/mpv
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add some info for acm and tips for searching
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28937 b3059339-0415-0410-9bf9-f77b7e298cf2
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@ -25,17 +25,36 @@ Cannot find codec matching selected -vo and video format 0x55594648.
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It means your AVI is encoded with a codec which has the HFYU fourcc (HFYU =
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HuffYUV codec, DIV3 = DivX Low Motion, etc.). Now that you know this, you
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have to find out which DLL Windows loads in order to play this file. In our
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case, the 'system.ini' contains this information in a line that reads:
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have to find out which DLL Windows loads in order to play this file.
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You can find the vfw codec by searching the internet for e.g. VIDC.HFYU.
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In our case, the 'system.ini' also contains this information in a line that reads:
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VIDC.HFYU=huffyuv.dll
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So you need the 'huffyuv.dll' file. Note that the audio codecs are
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specified by the MSACM prefix:
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So you need the 'huffyuv.dll' file.
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ACM Codecs:
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~~~~~~~~~~~~
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MPlayer may fail at playing the audio in your file with this message:
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Cannot find codec for audio format 0x55.
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Read DOCS/HTML/en/codecs.html!
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Audio: no sound
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MPlayer calls this the TwoCC format identifier. From the TwoCC list we find:
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0x0055 MPEG-1 Layer 3 (MP3)
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If you are lucky, you can then just search the internet for "codec acm"
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e.g. "mp3 acm". Or if the codec is already installed on Windows,
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it will show up in the system.ini as:
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msacm.l3acm=L3codeca.acm
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This is the MP3 codec.
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Note that the audio codecs are specified by the MSACM prefix:
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@ -86,3 +105,15 @@ Take a deep breath and start searching the registry...
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If searching fails, try enabling all the checkboxes. You may have
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false hits, but you may get lucky...
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Tips:
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~~~~~~~
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If you get an error loading a new codec, it may need some more files to work.
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Start the filemon utility before loading MPlayer to find out which dlls are
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trying to be loaded.
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Your codec may load some external .dll libraries. If the codec is already
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installed in Windows, run listdlls wmplayer.exe while Windows Media
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Player is playing your file to find out which.
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