qtdemux: Use already parsed codec data boxes instead of parsing a second time

And parse common boxes in a central place.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8929>
This commit is contained in:
Sebastian Dröge 2025-05-03 18:07:18 +03:00 committed by GStreamer Marge Bot
parent cba7ce1228
commit 8a30c6b13b

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