Hello, I have the haali filter and avisynth installed. I also have mkvextractGUI and VLC. I've been successful with mkvextract in the past, but there's something odd that happens with the ogg audio. It gets extracted, but the audio, when played back has glitches. This file plays fine in VLC. Previously, I've been able to extract the WAV using VLC, but not sure if I can do it this time because the MKV file has two audio tracks and I want to select the second one. There is a way I know of, but it is long-winded. Open the mkv file in mkvmerge and create a new file with just the video and audio that you want, then use VLC to get a clean WAV file. There *has* to be a better way! Thanks
mplayer.exe -aid 2 -ao pcm:fast:file=audio_out.wav -vo null -vc null input.mkv mkvextract shouldn't have any problem extracting vorbis audio though. Still if you were only going to decode it anyway...
mkvextract extracted the audio, it plays but it has squawks and odd sounds every few seconds, clearly there's some garbage data that crept in somewhere. I've seen this before when attempting to get vorbis audio via this nethod. Instead, I've used VLC - this is cut and paste from a txt file I saved on my PC, not sure where it originally came from: "1. Start the "VLC media player". 2. Click on Ctrl-F (or the "File" tab and select "Open file...") 3. Click on the "Browse" button and find the .mpg you want to extract the audio from. Double click on it. 4. Put a check mark in the "Stream output" box. Then click on the "Settings..." button next to it. 5. Put a check mark in the "File" box under "Output methods". Then use the "Browse..." Button to find the folder you want to put your .wav file into. Enter the file name you want with a .wav extension. Click on the "Save" button. 6. Put a dot in the circle next to "WAV" in the "Encapsulation Method" box. 7. Put a check mark in the "Audio codec" box in the "Transcoding options" box. Use the dropdown arrow to select "s16l". 8. Click on the "OK" button. 9. Click on the "OK" button at the bottom of the page now displayed. VLC will now make the 16 bit Stereo .wav file" What is this mplayer tool? I've not seen that one. Not sure what you meant by "Still if you were only going to decode it anyway..." I wanted to reencode it to mp3 so I can build an avi that plays in my set top dvd player.. Dave
I meant that if you were going to decode it anyway, demuxing and decoding to PCM in one go makes more sense anyway. mplayer is like VLC. It is a cross platform, open source, free player with built in decoders/parsers, also based mostly on libavcodec. Personally I prefer it over VLC.
Hi guys.. concerning mplayer. It's one of the essential linux tools, we use it's engine for just about all demux and transcode operations. Without it a linux system doesn't have much video capability. http://www.mplayerhq.hu/DOCS/HTML-single/en/MPlayer.html VLC on the other hand is a better general media player, easy to configure, generally works out of the box (unlike mplayer) and doesn't need lots of tweaks. http://www.videolan.org/doc/vlc-user-guide/en/vlc-user-guide-en.html Thanks for that audio-rip with vlc info Dave.. I will give it a go and see if it works for me.
mplayer works out of the box. Just download run ./configure && make && make install and it works or just apt-get mplayer or similar. For linux you also have libxine and gstreamer. The main drawback to mplayer is the lack of on the fly configuration. Not an issue here though.
Regarding Mplayer... I'm using windows xp, so I downloaded a pre-built version. I do have "make" on my PC, but I haven't tried it. What's the benefit to building my own? Using the one I have, the first thing I see is the aspect ratio is wrong for both avi and mpg2. Do I have to do something to tweak it?
If your monitor isn't 4:3 (slightly off for 5:4, way off for 16:9/10) then you will need to set the monitor aspect ratio. Just add "monitoraspect=16/10" to your config file. Other than that I have never had any AR issues. Only other thing could be due to the files themselves. mplayer fully supports ARS (Aspect Ratio Signalling) including ODML AR flags. So if a file is flagged, then it will resize where other players may not. For decoding the audio though you should have -vo null, which means no video. So AR really shouldn't come into it. So you get no video with the default vo? When I said works out of the box, obviously there is still plenty of stuff that you may want to set in your config file. But it should still at least work.
