[x264-devel] Re: non monotone timestamps...

[bond]

> On Sun, Aug 20, 2006 at 02:04:22PM -0700, Loren Merritt wrote:
> > On Sun, 20 Aug 2006, Daniel J Blueman wrote:
> >
> > >When performing 2-pass encoding [1], I see many "non monotone
> > >timestamps" errors [2], so frames are dropped, resulting in a shorter
> > >video stream than the audio stream.
> > >
> > >I tracked this down to when the +bpyramid option is passed to x264; no
> > >problem occurs with '-bpyramid', ie when using B-frames as references
> > >is disabled. I'm converting a MJPEG 640x480 30 fps video from my
> > >digital camera with ffmpeg etc trees from late Jul 06 subversion.
> > >
> > >Doing a quick search, it seems little is known about this issue. Any
> > >ideas? I'm not on the mailing list, so please CC.
> >
> > libavformat doesn't support bpyramid.
>
> do you know why? no i am not aware of an issue with bpyramid and lavf
> just mencoder + bframes

the ctts atom isnt created correctly when using b-pyramid with x264
outputting to .mp4, therefore ffmpeg is not able to create spec compliant
mp4 files when using b-pyramid (normal b-frames are fine)

x264's own tool handles this fine

-- 
This is the x264-devel mailing-list
To unsubscribe, go to: http://developers.videolan.org/lists.html