[gstreamer-bugs] [Bug 617532] New: [qtmux] Take into account new-segments for incoming streams

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=617532
  GStreamer | gst-plugins-bad | git

           Summary: [qtmux] Take into account new-segments for incoming
                    streams
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: bilboed at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


qtmux doesn't take into account the new-segment events in order to calculate
the buffer PTS/DTS.

It should use a GstSegment per stream, and then use the running time
(gst_segment_to_running_time()).

In order to trigger this bug you need at least 2 segments of buffers with a gap
between the two, like the following:

NEWSEGMENT start: 10s, stop: 15s, position: 0s
 BUFFERS from 10s to 15s
/* If you stop here, the resulting file will be OK, with a duration of 5s and
playback going from 0s to 5s */
NEWSEGMENT start: 50s, stop: 55s, position: 5s
 BUFFERS from 50s to 55s
/* The resulting file will be 40s long... whereas it only contains 10s of
video, and there will be a playback gap between the first 5s and the remaining
5s */

One way to try this is to use tests/examples/playlist in
gst-editing-services[0] (requires gnonlin and gst-convenience [1]) as such:

./playlist -r -f video/quicktime -a audio/mpeg,mpegversion=4 -v
video/mpeg,mpegversion=4,systemstream=False -o
file:///home/bilboed/outputfile.mov /media/data/medias/input.mp4 10 5
/media/data/medias/input.mp4 50 5

0: http://git.collabora.co.uk/?p=user/edward/gst-editing-services.git
1: http://git.collabora.co.uk/?p=user/edward/gst-convenience.git

-- 
Configure bugmail: https://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.