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avformat/mxfdec: disallow generic seek search

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If the demuxer does not provide per-stream indexes, the generic seek search can
attempt to read the whole media file from the beginning when seeking. For large
MXF files this can cause huge lockups for a seek after the last timestamp,
which will eventually fail. So let's disable the generic seek for mxf, the
demuxer's own seek code should handle seeking just fine.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2024-08-27 01:08:33 +02:00
parent 24eff5b547
commit 90f68f7b2d
1 changed files with 1 additions and 1 deletions
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libavformat/mxfdec.c
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@ -4274,7 +4274,7 @@ static const AVClass demuxer_class = {
const FFInputFormat ff_mxf_demuxer = {
.p.name = "mxf",
.p.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
.p.flags = AVFMT_SEEK_TO_PTS,
.p.flags = AVFMT_SEEK_TO_PTS | AVFMT_NOGENSEARCH,
.p.priv_class = &demuxer_class,
.priv_data_size = sizeof(MXFContext),
.flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,