[FFmpeg-devel] [PATCH v2 0/1] avformat/demux: Fix accurate probing of durations in mpegts/ps

[Nicolas Gaullier]

v1: There was an issue with teletext where resolution is set just once at decoder init
(teletext resolution is fixed/hard coded),
so it is somewhat fragile: when a demuxer context update occurs, it is lost/overriden
by avcodec_parameters_to_context(sti->avctx, st->codecpar) in read_frame_internal.
They could have been other scenario besides teletext, I don't know.

v2: So now at estimate_timings_from_pts, with one or more seeking involved (seeking
is detected by the mpegts demuxer and set last_vn=-1, so pmt is forced/updated
and results in demuxer context update),
it is required to preserve the info in codecpar at first.
Thanks to Michael for reporting the issue.

Nicolas Gaullier (1):
  avformat/demux: Fix accurate probing of durations in mpegts/ps

 libavformat/demux.c                           |  36 ++--
 tests/ref/fate/concat-demuxer-simple2-lavf-ts | 170 +++++++++---------
 tests/ref/fate/ts-opus-demux                  |   4 +-
 3 files changed, 100 insertions(+), 110 deletions(-)

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2.30.2