351936aeac
If we can calculate timestamps for buffers, then set the duration on outgoing buffers based on the number of samples depayloaded. This can fix the muxing to mp4, where otherwise the last packet in a muxed file will have 0 duration in the mp4 file. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6447>