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View Full Version : PCM 5.1 audio into mkv?

marcio
6th June 2011, 20:04
I am trying to put a PCM 5.1 audio from my BLURAY of "Pirates of the Caribbean" into a .mkv file with mkvtoolnix 4.8.0 (mkvmerge gui), and it doesn't work.

Is this a know issue?
The audio file is called "audio.pcm" and it has about 7GB.
Is there a fix?

http://i54.tinypic.com/zwja8m.jpg
kypec
6th June 2011, 20:41
IIRC Mosu said that LPCM audio is not supported in mkvmerge. Most likely the lack of support applies to PCM tracks as well.
Try to convert that PCM file to regular WAV, or perhaps FLAC if supported by your player. Use eac3to for this.
marcio
6th June 2011, 20:47
IIRC Mosu said that LPCM audio is not supported in mkvmerge. Most likely the lack of support applies to PCM tracks as well.
Try to convert that PCM file to regular WAV, or perhaps FLAC if supported by your player. Use eac3to for this.


Thanks for the information. I wouldn't want to lose any quality in the audio, so can you show me step by step how to make the conversion to wav (lossless)? Its a 5.1 audio file, I just don't know how to do it.
kypec
7th June 2011, 08:34
Well, all the information you need to know is in this thread (http://forum.doom9.org/showthread.php?t=125966).
In general you just need to run something like this:"C:\Program Files (x86)\AVTools\eac3to\eac3to.exe" audiofile.pcm audiofile.wav with paths and filenames as appropriate for your case of course.
If you're not comfortable with CLI then there are many GUIs available, my favorite is UsEac3to (http://forum.doom9.org/showthread.php?t=145574)
TheFluff
9th June 2011, 18:32
WAV is a container, not a way of encoding audio. It almost always contains PCM audio. Generally speaking, any PCM audio you encounter on a DVD, CD or BD or in a random WAV you found on the internet is extremely likely to be LPCM (the L stands for Linear). What Mosu meant is most likely that mkvmerge cannot detect containerless PCM audio by itself; you need to add the WAV headers for it to be detected properly. The easiest way to do what you want to do is to use eac3to; you can go directly from m2ts to mkv if you want to.
Chetwood
10th June 2011, 06:57
FYI: you can post Mediainfo's text output in code tags, no need to use screenshots.