[gst-devel] Problem with rtspsrc->rtph264depay->qtmux->filesink

[Yiliang Bao]

Hi Florian,

Thanks for replying to my message. ffmux_mp4 did not work for me either when
I posted the original message. All I got are access unit delimiter RBSP's.
An acces unit delimiter RBSP is something like 000000010910 for the I frame,
and 000000010030 for the non-I frame.

Since the AU delimiter has the same timestamp as the following NAL, I was
wondering whether that was a problem. And indeed it was. In the
functioncompute_pkt_fields2() in file:
/gst-ffmpeg-0.10.9/gst-libs/ext/ffmpeg/libavformat/utils.c

I changed the following line to allow two consecutive packets have same time
stamp:

 #if 1

if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts > pkt->dts){

#else

if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){

#endif


Now I can capture video correctly. I am wondering if anyone working on
ffmpeg can verify whether this fix is a valid solution. Maybe I should post
a separate message on ffmux_mp4.

However, this does not solve my problem. I still need to make qtmux work
since it supports the audio codec which ffmux_mp4 does not support.

Thanks,
Yiliang

On Tue, Nov 24, 2009 at 12:05 AM, florian iragne <
florian.iragne at viewsurf.com> wrote:

> Hi,
>
> Yiliang Bao a écrit :
> > I got this error:
> >
> > gstqtmux.c(1347): gst_qt_mux_add_buffer ():
> > /GstPipeline:pipeline0/GstQTMux:qtmux0:
> > Failed to determine time to mux.
>
> i got the same error and have had no success using qtmux or mp4mux.
>
> > I also tried ffmux_mp4. The pipeline can continue, but it looks like that
> > only the access unit delimiter RBSP is captured.
>
> I use ffmux_mp4 with success in my pipeline. Could you provide yours to
> check what's wrong?
>
>
> Florian
>
>
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