Hi,
I'm trying to find the codec with best performance to use with gem in Ubuntu.
Up to now the best I've found is MJPEG, but the funny thing is that if I code the file myself with MJPEG using Avidemux, I get much better performance than with a file also coded with MJPEG that I was given.
What can it be due to? When I code the file with MJPEG the only parameter I can change is "quality"
Does it depend entirely on the quality setting, or is it possible that different implementations of the encoder encode in such a way that it is then more or less expensive for the decoder to decode?
thanks m.
On 09/23/2010 09:34 PM, Matteo Sisti Sette wrote:
Does it depend entirely on the quality setting, or is it possible that different implementations of the encoder encode in such a way that it is then more or less expensive for the decoder to decode?
i would suspect that recoding the video might lead to a cleaner structure of the framerate information. e.g. if the original video has a variable framerate though e.g. all the frames have the same length, and the re-encoded video has a fixed framerate (of the same length), the you might get noticeable performance improvements.
fgmasdr IOhannes
On 09/24/2010 10:03 AM, IOhannes zmölnig wrote:
i would suspect that recoding the video might lead to a cleaner structure of the framerate information. e.g. if the original video has a variable framerate though e.g. all the frames have the same length, and the re-encoded video has a fixed framerate (of the same length), the you might get noticeable performance improvements.
Is there any program with which I can inspect the file and ckeck all this kind of things?
thanks m.
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IOhannes zmölnig -
Matteo Sisti Sette