[Bug 783470] qtmux with x264 causes offset in video timestamps

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Wed Jun 7 12:06:53 UTC 2017


https://bugzilla.gnome.org/show_bug.cgi?id=783470

--- Comment #1 from Petteri Aimonen <jpa at gnobug.mail.kapsi.fi> ---
Okay, bisected to commit 12181efddcd33: qtmux: Handle DTS with negative running
time

So the problem stems from that QT format doesn't support negative DTS, and
qtmux resorts to incrementing both DTS and PTS to make it positive. It seems to
me that when the PTS of one pad/stream is adjusted, all the other pads should
be adjusted by the same amount?

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