[x264-devel] does x264 not generate PTS values for h.264 stream ??

[Amin Zia]

I'm having the same problem with encapsulating h264
payload in TS packets. More specifically, the MPEG2 TS
can be viewed by VLC or Mplayer but not any hardware
decoder. I analyzed the sequence using MPEG TS
analyzer. It seems that there are a lot of
non-standard timing discontinuities generated by
FFMPEG. 

Or am I missing something?

Amin

--- Mrukant Popat <mpopat at pioneer-pra.com> wrote:

> On Tue, 2007-10-16 at 10:42 -0600, Loren Merritt
> wrote:
> > On Mon, 15 Oct 2007, Mrukant Popat wrote:
> > 
> > > does x264 not generate PTS values for h.264
> stream ??
> > >
> > > I encoded an h.264 raw video using x.264. I
> muxed this video with AAC
> > > audio using ffmpeg and without transcoding it.
> When I play it using a
> > > software decoder like mplayer on my linux PC, it
> plays well, but when I
> > > try to play it back on embedded hardware, I
> cannot see video and PTS
> > > values prints 0 (zero)
> > 
> > h264 raw streams can't contain pts. That's up to
> the container. And if 
> > your muxed file plays on a PC, then it does
> contain PTS.
> > 
> > --Loren Merritt
> > _______________________________________________
> > x264-devel mailing list
> > x264-devel at videolan.org
> > http://mailman.videolan.org/listinfo/x264-devel
> 
> Hi Loren,
> 
> Thanx for your reply. You are right. H.264 contains
> vop_time_increment
> and not pts. But the TS I generated using ffmpeg
> plays on mplayer, and
> not on embedded hardware. Is it that the software
> decoder i.e. mplayer
> just takes the frames in sequence, decodes it and
> renders it?? (there
> are no B frames in this video). 
> My hardware decoder prints value of PTS as 0 (zero)
> and does not show
> video. Is there any other better TS muxer available
> for free /opensource
> that I can use because, ffmpeg does not seem to be
> generating PTS in TS
> inspite of giving -genpts option. Here is the
> command line I m using to
> generate TS using ffmpeg.
> 
> ffmpeg -i raw.264 -i raw.aac -genpts -f mpegts -y
> -vcodec copy -acodec
> copy output.ts
> 
> regards,
> Mrukant
> 
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