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avformat/mov: Add option to ignore chapters during parsing
Chapter-indexing can be expensive since chapters may be interspersed throughout the entire file and may require many seeks - especially costly when consuming a video over a remote protocol like http. Furthermore it is often unnecessary, especially when only trying to get video info (e.g. via ffprobe). Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -190,6 +190,7 @@ typedef struct MOVContext {
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int chapter_track;
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int use_absolute_path;
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int ignore_editlist;
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int ignore_chapters;
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int seek_individually;
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int64_t next_root_atom; ///< offset of the next root atom
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int export_all;
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@ -462,6 +462,9 @@ static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
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char str[256+1];
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int ret;
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if (c->ignore_chapters)
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return 0;
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if ((atom.size -= 5) < 0)
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return 0;
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@ -4635,7 +4638,7 @@ static int mov_read_header(AVFormatContext *s)
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av_log(mov->fc, AV_LOG_TRACE, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
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if (pb->seekable) {
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if (mov->chapter_track > 0)
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if (mov->chapter_track > 0 && !mov->ignore_chapters)
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mov_read_chapters(s);
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for (i = 0; i < s->nb_streams; i++)
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if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd"))
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@ -5046,6 +5049,8 @@ static const AVOption mov_options[] = {
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0, 1, FLAGS},
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{"ignore_editlist", "", OFFSET(ignore_editlist), AV_OPT_TYPE_INT, {.i64 = 0},
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0, 1, FLAGS},
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{"ignore_chapters", "", OFFSET(ignore_chapters), AV_OPT_TYPE_BOOL, {.i64 = 0},
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0, 1, FLAGS},
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{"use_mfra_for",
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"use mfra for fragment timestamps",
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OFFSET(use_mfra_for), AV_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO},
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