[Bug 709940] [pitivi] Audio glitch / sound jerkiness at some points in time when mixing multiple audio clips

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=709940
  GStreamer | gst-editing-services | 1.1.90

--- Comment #2 from Thibault Saunier <thibault.saunier at collabora.com> 2013-10-12 14:59:15 UTC ---
So, as I understand it now, we get incoherencies in timestamp whenever we have
a cut in the composition.

For example:

0         5          10        15
          [  clip 1  ] 
[            clip2             ]

The buffer timestamp comming into the encoder at around 5 look like:

0:00:04.935691609 (duration = 23219955)
0:00:04.958911564
0:00:04.982131519

And then we have the update in the pipeline created by gnl and the next
timestamp will be:

0:00:05.000000000

instead of 4982131519 + 23219955 = 5005351474


I do know much about that kind of stuff and how audio encoder support this kind
of things, could that be the reason why we get that "glitches" when such thing
happen?

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