[MPlayer-users] [BUG REPORT] - zero length frames in mencoder output

D Richard Felker III dalias at aerifal.cx
Fri Dec 31 06:43:07 CET 2004

On Thu, Dec 30, 2004 at 07:27:40PM +0100, bond wrote:
> hi, i discussed this issue with pengvado/akupenguin, the dev implementing x264 into mencoder, and he meant i might file a bug report about this issue so here it is:
> i tried encoding with x264 with a compile made from cvs on the 29/12/2004 (but the issue is also there with older builds)
> i used the following commandline from a .vob source (together with some changed settings i describe below): 
> "C:\path\mencoder.exe" -ss 00:00:00.400 -frames 100 -noskip -mc 0 -sws 9 -vf crop=720:416:0:82,scale=640:256,harddup -vfm ffmpeg "C:\path\source.vob" -ovc x264 -of avi -ffourcc VSSH -o mencoder.avi
> i extracted the output to raw h.264 streams with the avi2raw tool provided by the mpeg4ip project (available on sourceforge), latest cvs, which is according to the devs able to handle avc-in-avi. - While doing this the tool reported that there are "zero length frames" in different amounts depending on the used settings in the output and also the total amount of "correct" avc frame it was able to output
> - also i noticed that mencoder reports about "1 duplicate frame(s)" during encoding, leading to one frame being too few in the output (independant of the zero length frames)

solution: use the harddup filter at the end of your video filter
chain. this will prevent there from being stupid 0-length frames.

btw, fix your mailer to use line breaks. your mail is impossible to
read as-is..


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