[Bug 755047] mssdemux/dashdemux: live playback regression

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=755047

--- Comment #11 from Philippe Normand <phil at base-art.net> ---
(In reply to Sebastian Dröge (slomo) from comment #10)
> (In reply to Philippe Normand from comment #8)
> > (In reply to Sebastian Dröge (slomo) from comment #4)
> > > Curious, can you also get me the timestamps (PTS is enough) that happen
> > > after the segment event? And also what qtdemux outputs (i.e. what it finds
> > > in the tfdt)?
> > 
> > in both cases I see similar qtdemux logs:
> > 
> > 0:00:01.333264739  2227 0x73f2a920 LOG                  qtdemux
> > qtdemux.c:5040:gst_qtdemux_decorate_and_push_buffer:<qtdemux0> Pushing
> > buffer with dts 456:21:01.484400000, pts 456:21:01.564400000, duration
> > 0:00:00.040000000 on pad video_0
> 
> If it doesn't have any tfdt, where do those timestamps come from? You say
> below that adaptivedemux puts -1 on the buffers.
> 
> 

Sorry, the PTS is set correctly once before sending the segment event and
afterwards it's invalid:

0:00:05.600407289  2997 0x71b02860 DEBUG          adaptivedemux
gstadaptivedemux.c:1462:gst_adaptive_demux_stream_push_buffer:<mssdemux0:video_00>
buffer pts=457:32:15.484400000
0:00:05.600631977  2997 0x71b02860 DEBUG          adaptivedemux
gstadaptivedemux.c:1489:gst_adaptive_demux_stream_push_buffer:<mssdemux0:video_00>
Sending pending seg: segment event: 0x73f045e8, time 
0:00:05.601306768  2997 0x73f25920 LOG                  qtdemux
qtdemux.c:1989:gst_qtdemux_handle_sink_event:<qtdemux0> handling stream-start
event
0:00:05.601661873  2997 0x71b02860 DEBUG          adaptivedemux
gstadaptivedemux.c:1462:gst_adaptive_demux_stream_push_buffer:<mssdemux0:video_00>
buffer pts=99:99:99.999999999



> Is 456:21:01.564400000 the value that is in the mss manifest?
> 

Yes

> 
> > In adaptivedemux after setting the PTS of the buffer to push:
> > 
> > 
> > 0:00:10.182807288  2831 0x71b02800 DEBUG          adaptivedemux
> > gstadaptivedemux.c:1462:gst_adaptive_demux_stream_push_buffer:<mssdemux0:
> > video_00> buffer pts=99:99:99.999999999
> 
> Even for the first buffer of a segment?

No, the first buffer has a valid PTS, sorry for the confusion :)

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