tree d516954777063375a99d63f732dbb9f9788c978a
parent 13c12cd4702e621c7363be8f22a8b55c22a31a02
author Andreas Rheinhardt <andreas.rheinhardt@gmail.com> 1577585693 +0100
committer Andreas Rheinhardt <andreas.rheinhardt@gmail.com> 1587411046 +0200

avformat/matroskaenc: Improve Cues in case of no video

The Matroska muxer currently only adds CuePoints in three cases:
a) For video keyframes. b) For the first audio frame in a new Cluster if
in DASH-mode. c) For subtitles. This means that ordinary Matroska audio
files won't have any Cues which impedes seeking.

This commit changes this. For every track in a file without video track
it is checked and tracked whether a Cue entry has already been added
for said track for the current Cluster. This is used to add a Cue entry
for each first packet of each track in each Cluster.

Implements #3149.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>