On Sat, 6 Mar 2004, E.Chalaron wrote:
> I just recompiled mjpegtools, and it is slow slow slow compared to a rpm
> version I had before. Anything I should in the configure with.....
Can you quantify "slow slow slow"? ;)
I'm seeing about 10 frames/sec for the DVD frame size. I suspect the
bottleneck is the filters I have in the pipeline because the encoding
rate with and without B frames is very close - omitting B frames
should be a lot faster.
Earlier versions of mpeg2enc had the wrong default for the -I option.
Yes, -I 0 is faster but it's also incorrect in many cases. The
encoder was changed to select -I 0 or -I 1 based on the interlacing
tag ('I') in the input stream.
You can experiment with overriding -I and see what happens.
On the other hand there's no substitute for raw cpu power - dual cpu
system with "-M 2" helps a lot :)
Cheers,
Steven Schultz
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