[PD] gem codec basic review

[Peter Plessas]

Hi,

This made me test Gem on my machine as well and it turns out that:

mjpeg:
Does not play, throwing lines of the following onto the console:
[mjpegb @ 0xb7405b48]not mjpeg-b (bad fourcc)

mpeg4:
Takes 99% cpu on a 1.6GHz CoreDuo from Intel

This is with pd 0.40-2 and a recent cvs Gem checkout.

Any pointers appreciated, gem and video codecs nightmare otherwise.

regards, Peter

patrick wrote:
> hi,
> 
> i am on linux running the very last version of gem from cvs. i am trying 
> to find a good codec for gem. here's my basic research:
> 
> ---------------------------------------
> the best codec for quicktime is jpeg:
> transcode -i yourvideo -y mov,null -F jpeg,,jpeg_quality=70 -o gem.mov
> 
> gem cpu usage is 38%
> mplayer cpu usage is 27%
> ffplay cpu usage is 16%
> lqtplay cpu usage is 1% **
> 
> ---------------------------------------
> for avi i tried ffmpeg / mjpeg:
> transcode -i yourvideo -y ffmpeg,null -F mjpeg -o gem.avi
> 
> gem cpu usage is 33%
> mplayer cpu usage is 33%
> ffplay cpu usage is 22%
> 
> ---------------------------------------
> the really best codec around is mpeg4:
> transcode -i yourvideo -y ffmpeg,null -F mpeg4 -o gem.avi
> 
> gem cpu usage is: crashed**
> mplayer cpu usage is 16%
> ffplay cpu usage is 11%
> 
> 
> * lqtplay seems to make a excellent job for decoding is own codec. would 
> it be possible to make a pix_qt based on the source of this player???
> 
> ** anybody can test this codec? that would be my second choice... after 
> lqtplay ported to gem...
> 
> pat
> 
> 
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