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qtmux: use timestamp delta as duration if possible

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=696437
This commit is contained in:
Matej Knopp 2013-03-23 05:22:23 +01:00 committed by David Schleef
parent 509631f60b
commit 5686512b77
1 changed files with 12 additions and 1 deletions
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13
gst/isomp4/gstqtmux.c
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@ -2178,7 +2178,18 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
GST_BUFFER_DTS (buf) = GST_BUFFER_DTS (last_buf);
}
duration = GST_BUFFER_DURATION (last_buf);
/* duration actually means time delta between samples, so we calculate
* the duration based on the difference in DTS or PTS, falling back
* to DURATION if the other two don't exist, such as with the last
* sample before EOS. */
if (last_buf && buf && GST_BUFFER_DTS_IS_VALID (buf)
&& GST_BUFFER_DTS_IS_VALID (last_buf))
duration = GST_BUFFER_DTS (buf) - GST_BUFFER_DTS (last_buf);
else if (last_buf && buf && GST_BUFFER_PTS_IS_VALID (buf)
&& GST_BUFFER_PTS_IS_VALID (last_buf))
duration = GST_BUFFER_PTS (buf) - GST_BUFFER_PTS (last_buf);
else
duration = GST_BUFFER_DURATION (last_buf);
/* for computing the avg bitrate */
if (G_LIKELY (last_buf)) {