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Code Issues Releases Activity

avformat/hls: fix segment selection regression on track changes of live streams

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Commit ad701326b4 ("avformat/hls: open playlists immediately when
AVDISCARD_ALL is dropped") inadvertently caused first_packet to never be
cleared, causing select_cur_seq_no() to not use the specific code for
live streams.

In practice this means that when the user selects a different audio
track during live stream (i.e. non-VOD) playback, there may be some
additional delay as the code might select an incorrect segment at first,
and we have to wait for video to catch audio (if too late segment was
selected) or to download more following audio segments (if too early
segment was selected).

Fix that by restoring the zeroing of first_packet.
(cherry picked from commit fd74d45d51)
This commit is contained in:
Anssi Hannula 2015-10-15 13:42:38 +03:00 committed by Carl Eugen Hoyos
parent c2db8ebc08
commit d51ddd45b2
1 changed files with 1 additions and 0 deletions
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libavformat/hls.c
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@ -1613,6 +1613,7 @@ static int hls_read_packet(AVFormatContext *s, AVPacket *pkt)
int ret, i, minplaylist = -1;
recheck_discard_flags(s, c->first_packet);
c->first_packet = 0;
for (i = 0; i < c->n_playlists; i++) {
struct playlist *pls = c->playlists[i];