[Libav-user] Decode H264 video using ffmpeg through Xuggler

[Julien Baumgarten]

I got this error when I use Xuggler to decode one video (Click here to start the download ...) that I encode myself using Xuggler too. I set the baseline, frame rate, frame size, the number of pictures in group of pictures, the pixel type, the bit rate and a preset but the decode fail.

I decided to try to encode and decode the video only by using ffmpeg software (ffmpeg and ffplay) and using a RED5 server.
Encode command line:
/usr/local/xuggler/bin/ffmpeg -i ~/Desktop/The\ Simpsons\ Movie\ -\ Trailer.mp4 -re -vcodec libx264 -vpre ultrafast -vpre baseline -g 60 -vb 150000 -strict experimental -acodec copy -f flv rtmp://10.120.1.90/oflaDemo/test123

Decode command line to save the result in a flv file:
/usr/local/xuggler/bin/ffmpeg -i rtmp://10.120.1.90/oflaDemo/test123 -acodec copy -vcodec copy -y toto.flv

Decode command line to display the result on the screen:
/usr/local/xuggler/bin/ffplay -i rtmp://10.120.1.90/oflaDemo/test123

The problem is:
- The quality is disgusting in the flv file. I assume that comes from the ultrafast preset but
- FFPLAY play 2 or 3 frames and stop but continue to play the sound => So it does not work 
- My software gives me the "no frame!" error

If someone has an idea...  :)

Yours sincerely,
Julien


Le 13 févr. 2012 à 20:24, Alex Cohn a écrit :

> On Feb 13, 2012 6:05 PM, "Julien Baumgarten" <j.baumgarten at netvisio.com> wrote:
> >
> > Hi everyone,
> > I come here in order to get some information about decoding h264 video. I am using Xuggler to decode some video. My code works if I use another codec than H264 but I need this one. When I use the H264 codec, I have an error with the ffmpeg library: 16:52:51.313 [main] ERROR org.ffmpeg - [h264 @ 0x7fe82d0b9e00] no frame!
> >
> > What does this error mean?
> >
> > I try to set some basic information such as frame rate, time base, width and height, bit rate but the error is still here. If someone can help me...
> >
> > Yours sincerely,
> > Julien
> 
> Please post your complete command line and the version you are using. It would make troubleshooting much easier if you could make a short sample video available, too.
> 
> BR,
> Alex
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