[Bug 754669] opusparse: overwrites upstream timestamps

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=754669

Alicia Boya García <aboya at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aboya at igalia.com

--- Comment #1 from Alicia Boya García <aboya at igalia.com> ---
I can't reproduce this bug with my MSE test vectors, opusparse seems to be
working fine in that regard.

In the following snippet I make a WebM file where the audio starts at a
non-zero timestamp. Notice the PTSs from matroskademux are preserved by
opusparse.

> gst-launch-1.0 -v filesrc location=<(cat ~/yt-mse-test-vectors/car_opus_low.webm/{init,media2}.webm) ! matroskademux ! identity silent=false ! opusparse ! fakesink silent=false | grep chain |head -n6
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = chain   *******
(identity0:sink) (110 bytes, dts: none, pts: 0:00:09.994500000, duration: none,
offset: -1, offset_end: -1, flags: 00004040 discont tag-memory , meta: none)
0x7fcd380074d0
/GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = chain   *******
(fakesink0:sink) (110 bytes, dts: 0:00:09.994500000, pts: 0:00:09.994500000,
duration: 0:00:00.020000000, offset: 20000000, offset_end: 960, flags: 00004040
discont tag-memory , meta: none) 0x7fcd380074d0
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = chain   *******
(identity0:sink) (110 bytes, dts: none, pts: 0:00:10.014500000, duration: none,
offset: -1, offset_end: -1, flags: 00004000 tag-memory , meta: none)
0x7fcd38007a20
/GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = chain   *******
(fakesink0:sink) (110 bytes, dts: 0:00:10.014500000, pts: 0:00:10.014500000,
duration: 0:00:00.020000000, offset: 40000000, offset_end: 1920, flags:
00000000 , meta: none) 0x7fcd38007a20
/GstPipeline:pipeline0/GstIdentity:identity0: last-message = chain   *******
(identity0:sink) (110 bytes, dts: none, pts: 0:00:10.034500000, duration: none,
offset: -1, offset_end: -1, flags: 00004000 tag-memory , meta: none)
0x7fcd38010010
/GstPipeline:pipeline0/GstFakeSink:fakesink0: last-message = chain   *******
(fakesink0:sink) (110 bytes, dts: 0:00:10.034500000, pts: 0:00:10.034500000,
duration: 0:00:00.020000000, offset: 60000000, offset_end: 2880, flags:
00000000 , meta: none) 0x7fcd38010010

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