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Old 04-04-2005, 07:19 PM   #1
Registered: Sep 2004
Location: Houston, TX
Distribution: Fedora
Posts: 261

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Video Conversion Problem with wmv

This is a little long, I apologize, but at least you'll know what I've already tried to do on my own.

I have several wmv (wmv2 format) files that I would like to convert to a different format. I was considering using matroska, so what I decided to do was to convert the audio and video to ogg, and xvid, respectively, using ffmpeg, and then use those files to create a matroska file using the mkv tools. I had no problem converting the audio, but the video has proven to be more difficult.
As I said, it's wmv2, and ffmpeg has no problem detecting that automatically, but when I convert it to any other video format, it skips. It doesn't skip if I watch the wmv file in xine or vlc, though. I've tried a lot of different codecs, all with the same result. Here's the command I'm using.
ffmpeg -i gencon2005apr1english300.wmv -an -vcodec xvid genConf2005AprSatAM.avi
I've also used several other codecs. The only error being reported is this:
[wmv2 @ 0x8dfe30]J-type picture isnt supported
Error while decoding stream #0.1
That pops up many times during the encoding process. I assume that's the problem, but I don't know what that means, or how to fix it. Is there something wrong with the wmv files, and if so, why don't they skip when I view them

I've also tried transcode. I'm not sure how to not record the audio, so I figured I'd take it out later, but here's what I tried with transcode:
transcode -x mplayer -i gencon2005apr1english300.wmv -y xvid4 -o genConf2005AprSatAM.avi
That resulted in
mkfifo video failed: Operation not permitted
video import module error: OPEN failed
MPlayer seemed like the only way I would be able to use transcode, because the only other mention of wmv on the man page for transcode was about encoding. Although MPlayer didn't really play the wmv files very well, so I'm not surprised. I don't know why. I have all the win32 codecs in /usr/lib/win32, so it shouldn't have a problem.

Ok, so that's all my problem. Does anyone have any ideas on how I can convert this video without all the skipping? I've tried everything I know to try.


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