diff --git a/libavformat/isom.h b/libavformat/isom.h index abcacab25a..d9956cf63a 100644 --- a/libavformat/isom.h +++ b/libavformat/isom.h @@ -234,6 +234,7 @@ typedef struct MOVContext { unsigned int nb_chapter_tracks; int use_absolute_path; int ignore_editlist; + int advanced_editlist; int ignore_chapters; int seek_individually; int64_t next_root_atom; ///< offset of the next root atom diff --git a/libavformat/mov.c b/libavformat/mov.c index e487e59634..4550cf0ad4 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -3309,7 +3309,7 @@ static void mov_build_index(MOVContext *mov, AVStream *st) uint64_t stream_size = 0; if (sc->elst_count) { - int i, edit_start_index = 0; + int i, edit_start_index = 0, multiple_edits = 0; int64_t empty_duration = 0; // empty duration of the first edit list entry int64_t start_time = 0; // start time of the media @@ -3322,15 +3322,28 @@ static void mov_build_index(MOVContext *mov, AVStream *st) edit_start_index = 1; } else if (i == edit_start_index && e->time >= 0) { start_time = e->time; + } else { + multiple_edits = 1; } } + if (multiple_edits && !mov->advanced_editlist) + av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, " + "Use -advanced_editlist to correctly decode otherwise " + "a/v desync might occur\n"); + /* adjust first dts according to edit list */ if ((empty_duration || start_time) && mov->time_scale > 0) { if (empty_duration) empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale); sc->time_offset = start_time - empty_duration; + if (!mov->advanced_editlist) + current_dts = -sc->time_offset; } + + if (!multiple_edits && !mov->advanced_editlist && + st->codecpar->codec_id == AV_CODEC_ID_AAC && start_time > 0) + sc->start_pad = start_time; } /* only use old uncompressed audio chunk demuxing when stts specifies it */ @@ -3564,8 +3577,10 @@ static void mov_build_index(MOVContext *mov, AVStream *st) } } - // Fix index according to edit lists. - mov_fix_index(mov, st); + if (!mov->ignore_editlist && mov->advanced_editlist) { + // Fix index according to edit lists. + mov_fix_index(mov, st); + } } static int test_same_origin(const char *src, const char *ref) { @@ -6478,7 +6493,11 @@ static const AVOption mov_options[] = { "Seek each stream individually to the to the closest point", OFFSET(seek_individually), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS}, - {"ignore_editlist", "", OFFSET(ignore_editlist), AV_OPT_TYPE_BOOL, {.i64 = 0}, + {"ignore_editlist", "Ignore the edit list atom.", OFFSET(ignore_editlist), AV_OPT_TYPE_BOOL, {.i64 = 0}, + 0, 1, FLAGS}, + {"advanced_editlist", + "Modify the AVIndex according to the editlists. Use this option to decode in the order specified by the edits.", + OFFSET(advanced_editlist), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS}, {"ignore_chapters", "", OFFSET(ignore_chapters), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},