@@ -779,6 +779,12 @@ cast to int32 are used to adjust onward dts.
Unit is the track time scale. Range is 0 to UINT_MAX. Default is @code{UINT_MAX - 48000*10} which allows upto
a 10 second dts correction for 48 kHz audio streams while accommodating 99.9% of @code{uint32} range.
+
+@item interleaved_read
+Interleaved read between multiple tracks, enabled by default. For bad interleaved files, manually interleave multiple
+tracks at the demuxer level can trigger seeking back and forth, which can be dramatically slow depending on the
+protocol. Disable this option when you don't need the demuxer level interleave, and want to avoid the IO penalizes.
+
@end table
@subsection Audible AAX
@@ -327,6 +327,7 @@ typedef struct MOVContext {
int64_t extent_offset;
} *avif_info;
int avif_info_size;
+ int interleaved_read;
} MOVContext;
int ff_mp4_read_descr_len(AVIOContext *pb);
@@ -8780,6 +8780,8 @@ static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
AVIndexEntry *sample = NULL;
int64_t best_dts = INT64_MAX;
int i;
+ MOVContext *mov = s->priv_data;
+ int no_interleave = !mov->interleaved_read || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL);
for (i = 0; i < s->nb_streams; i++) {
AVStream *avst = s->streams[i];
FFStream *const avsti = ffstream(avst);
@@ -8788,7 +8790,7 @@ static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
AVIndexEntry *current_sample = &avsti->index_entries[msc->current_sample];
int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
av_log(s, AV_LOG_TRACE, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
- if (!sample || (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) && current_sample->pos < sample->pos) ||
+ if (!sample || (no_interleave && current_sample->pos < sample->pos) ||
((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb && dts != AV_NOPTS_VALUE &&
((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
@@ -9282,6 +9284,7 @@ static const AVOption mov_options[] = {
{ "enable_drefs", "Enable external track support.", OFFSET(enable_drefs), AV_OPT_TYPE_BOOL,
{.i64 = 0}, 0, 1, FLAGS },
{ "max_stts_delta", "treat offsets above this value as invalid", OFFSET(max_stts_delta), AV_OPT_TYPE_INT, {.i64 = UINT_MAX-48000*10 }, 0, UINT_MAX, .flags = AV_OPT_FLAG_DECODING_PARAM },
+ { "interleaved_read", "Manually interleave between multiple tracks", OFFSET(interleaved_read), AV_OPT_TYPE_BOOL, {.i64 = 1 }, 0, 1, .flags = AV_OPT_FLAG_DECODING_PARAM },
{ NULL },
};
@@ -32,7 +32,7 @@
#include "version_major.h"
#define LIBAVFORMAT_VERSION_MINOR 11
-#define LIBAVFORMAT_VERSION_MICRO 100
+#define LIBAVFORMAT_VERSION_MICRO 101
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \