qtdemux: set need_segment after a second moov
stream.segment should be updated with the values of the current edit list, also when a new `moov` is received. Unfortunately this was not being the case because of an early return. As a consequence of this bugs, no end of movie clipping was being performed on the new moov and no segment event was being emitted. When performing stream switching (e.g. in MSE) the new moov may have a different edit list. This is often the case when switching between baseline H.264 (which lacks B-frames) and more demanding profiles. For this reason it's important to emit a new segment in order to be able to get matching stream times.
18-11-29-qtdemuxstream-ctor in 5 minutes and 34 seconds (queued for 1 second)3 jobs for