[Bug 688357] Incorrect PTS and missing DTS using x264enc

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=688357
  GStreamer | gst-plugins-ugly | 1.0.1

--- Comment #4 from Tim-Philipp Müller <t.i.m at zen.co.uk> 2012-11-15 20:32:19 UTC ---
Couple of comments:

 - best muxer here is probably (hopefully!) qtmux/mp4mux. It should handle
dts/pts well.

 - avimux is not really suitable for H.264 and likely won't work well (but
probably can be made to work better, just not a good test case)

 - there's no need for an h264parse element after x264enc. It should
(hopefully) work without.

 - x264enc may output either AVC or byte-stream format. It should negotiate the
right stream format automatically with the downstream element/muxer. If you
just do x264enc ! filesink, it looks like it will output AVC, which has no such
start codes. You can force bystream by doing x264enc !
video/x-h264,stream-format=byte-stream ! filesink ...

 - check the DTS/PTS on the buffers x264enc outputs, see e.g.:

      .. x264enc ! fakesink -v


 - avmux* demuxers are not in good shape, and I would be surprised if they
handled dts/pts at all yet. It does not look like they use the dts on the
buffers at first glance.

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