Hi everybody,

This is not the first mail about MPEG2 encoding performance, and probably not 
the last one either.

I'm comparing here the encoding performances of ffmpeg (MPEG4) and mpeg2enc. 
On a PIII-800, the former encodes in real time while the later encodes at 
around 3fps.

I might be wrong as I don't have an in-depth knowledge of MPEG2 and MPEG4 
compression, but it seems to me that MPEG4 compression is more time 
consumming than MPEG2.

I know that mpeg2enc is a professional-quality tool that can give extremely 
good quality MPEG2 streams. However, I'd like to know if anyone has ever 
profiled mpeg2enc to find where the performance bottleneck is. I don't expect 
mpeg2enc to give me real-time encoding performances (quality comes at a 
cost), but 3fps seems very low compared to 25fps.

Laurent Pinchart



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