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avformat/mov: calculate rfps from the first 100 frames of the index

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This reduces the amount of frames that need to be demuxed in av_find_stream_info()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-12-05 17:38:25 +01:00
parent 1565a9a9e9
commit e2bf00ce46
1 changed files with 4 additions and 0 deletions
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4
libavformat/mov.c
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@ -2159,6 +2159,8 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
"size %d, distance %d, keyframe %d\n", st->index, current_sample,
current_offset, current_dts, sample_size, distance, keyframe);
if (st->nb_index_entries < 100)
ff_rfps_add_frame(mov->fc, st, current_dts);
}
current_offset += sample_size;
@ -3410,6 +3412,8 @@ static int mov_read_header(AVFormatContext *s)
}
}
ff_rfps_calculate(s);
return 0;
}