[MPlayer-users] Re: trying to convert MJPEG

[The Wanderer]

John Brown wrote:

> Steve Kleene <skmpl <at> syrano.acb.uc.edu> writes:

>> mencoder lizard.avi \
>>   -oac twolame -twolameopts br=192 -srate 48000 -af lavcresample=48000 \
>>   -ovc lavc -lavcopts vcodec=mpeg1video:vbitrate=1000:mbd=2:trell:vpass=2 \
>>   -of lavf -lavfopts format=mpg:i_certify_that_my_video_stream_does_not_use_b_frames \
>>   -o lizard.mpg
>> 
>> I just tested these and got a file that still failed on XP.  The
>> audio was fine.  There was video, but it was very defective
>> (blotches of color all over).
> 
> You certify_that_your_video_stream_does_not_use_b_frames. Do you know
> if that is really true?

Given that none of the options in his -lavcopts tell it to use B frames,
why would it?

Unless my understanding is out of date, libavcodec will not use B frames
unless explicitly instructed to do so.

-- 
       The Wanderer

Warning: Simply because I argue an issue does not mean I agree with any
side of it.

Secrecy is the beginning of tyranny.