[Bug 758949] qtmux can't handle missing DTS

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=758949

--- Comment #10 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
(In reply to Nicolas Dufresne (stormer) from comment #8)
> I wonder if instead we can have DTS set the same way as with UDP, and let
> the jitterbuffer (even if not essential) smooth it up a bit.

The problem is that TCP is a quite bursty protocol because of all the buffering
that happens, the packet reordering and resending inside the protocol, etc.
With UDP you don't have all that and get packets as they arrive.

So with UDP you get some relatively good estimate of DTS by looking at the
capture times, with TCP it can be completely off. That's why we only ever take
the first timestamp as a base with TCP and let everything else be interpolated.

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