[FFmpeg-devel] [PATCH] lavf/mov.c: Use the correct offset to shift timestamp when seeking.
Sasi Inguva
isasi at google.com
Fri Mar 9 23:32:42 EET 2018
Attaching fate samples.
On Fri, Mar 9, 2018 at 1:30 PM, Sasi Inguva <isasi at google.com> wrote:
> Fixes seek for files with empty edits and files with negative ctts
> (dts_shift > 0). Added fate samples and tests.
>
> Signed-off-by: Sasi Inguva <isasi at isasi.mtv.corp.google.com>
> ---
> libavformat/isom.h | 1 +
> libavformat/mov.c | 27 +++--
> tests/fate/seek.mak | 6 +
> tests/ref/seek/empty-edit-mp4 | 134 +++++++++++++++++++++++
> tests/ref/seek/test-iibbibb-mp4 | 122 +++++++++++++++++++++
> tests/ref/seek/test-iibbibb-neg-ctts-mp4 | 122 +++++++++++++++++++++
> 6 files changed, 401 insertions(+), 11 deletions(-)
> create mode 100644 tests/ref/seek/empty-edit-mp4
> create mode 100644 tests/ref/seek/test-iibbibb-mp4
> create mode 100644 tests/ref/seek/test-iibbibb-neg-ctts-mp4
>
> diff --git a/libavformat/isom.h b/libavformat/isom.h
> index 65676fb0f5..4da34142f0 100644
> --- a/libavformat/isom.h
> +++ b/libavformat/isom.h
> @@ -168,6 +168,7 @@ typedef struct MOVStreamContext {
> int *keyframes;
> int time_scale;
> int64_t time_offset; ///< time offset of the edit list entries
> + int64_t min_corrected_pts; ///< minimum Composition time shown by
> the edits excluding empty edits.
> int current_sample;
> int64_t current_index;
> MOVIndexRange* index_ranges;
> diff --git a/libavformat/mov.c b/libavformat/mov.c
> index 95b9cd3f8b..cfc51482b0 100644
> --- a/libavformat/mov.c
> +++ b/libavformat/mov.c
> @@ -3378,7 +3378,6 @@ static void mov_fix_index(MOVContext *mov, AVStream
> *st)
> int64_t edit_list_start_ctts_sample = 0;
> int64_t curr_cts;
> int64_t curr_ctts = 0;
> - int64_t min_corrected_pts = -1;
> int64_t empty_edits_sum_duration = 0;
> int64_t edit_list_index = 0;
> int64_t index;
> @@ -3419,6 +3418,9 @@ static void mov_fix_index(MOVContext *mov, AVStream
> *st)
> msc->ctts_sample = 0;
> msc->ctts_allocated_size = 0;
>
> + // Reinitialize min_corrected_pts so that it can be computed again.
> + msc->min_corrected_pts = -1;
> +
> // If the dts_shift is positive (in case of negative ctts values in
> mov),
> // then negate the DTS by dts_shift
> if (msc->dts_shift > 0) {
> @@ -3563,10 +3565,10 @@ static void mov_fix_index(MOVContext *mov,
> AVStream *st)
> }
> }
> } else {
> - if (min_corrected_pts < 0) {
> - min_corrected_pts = edit_list_dts_counter + curr_ctts
> + msc->dts_shift;
> + if (msc->min_corrected_pts < 0) {
> + msc->min_corrected_pts = edit_list_dts_counter +
> curr_ctts + msc->dts_shift;
> } else {
> - min_corrected_pts = FFMIN(min_corrected_pts,
> edit_list_dts_counter + curr_ctts + msc->dts_shift);
> + msc->min_corrected_pts =
> FFMIN(msc->min_corrected_pts, edit_list_dts_counter + curr_ctts +
> msc->dts_shift);
> }
> if (edit_list_start_encountered == 0) {
> edit_list_start_encountered = 1;
> @@ -3625,16 +3627,16 @@ static void mov_fix_index(MOVContext *mov,
> AVStream *st)
> }
> }
> }
> - // If there are empty edits, then min_corrected_pts might be positive
> intentionally. So we subtract the
> - // sum duration of emtpy edits here.
> - min_corrected_pts -= empty_edits_sum_duration;
> + // If there are empty edits, then msc->min_corrected_pts might be
> positive
> + // intentionally. So we subtract the sum duration of emtpy edits here.
> + msc->min_corrected_pts -= empty_edits_sum_duration;
>
> // If the minimum pts turns out to be greater than zero after fixing
> the index, then we subtract the
> // dts by that amount to make the first pts zero.
> - if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
> min_corrected_pts > 0) {
> - av_log(mov->fc, AV_LOG_DEBUG, "Offset DTS by %"PRId64" to make
> first pts zero.\n", min_corrected_pts);
> + if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
> msc->min_corrected_pts > 0) {
> + av_log(mov->fc, AV_LOG_DEBUG, "Offset DTS by %"PRId64" to make
> first pts zero.\n", msc->min_corrected_pts);
> for (i = 0; i < st->nb_index_entries; ++i) {
> - st->index_entries[i].timestamp -= min_corrected_pts;
> + st->index_entries[i].timestamp -= msc->min_corrected_pts;
> }
> }
>
> @@ -3697,6 +3699,7 @@ static void mov_build_index(MOVContext *mov,
> AVStream *st)
> if (empty_duration)
> empty_duration = av_rescale(empty_duration,
> sc->time_scale, mov->time_scale);
> sc->time_offset = start_time - empty_duration;
> + sc->min_corrected_pts = start_time;
> if (!mov->advanced_editlist)
> current_dts = -sc->time_offset;
> }
> @@ -7158,7 +7161,9 @@ static int mov_seek_stream(AVFormatContext *s,
> AVStream *st, int64_t timestamp,
> int sample, time_sample, ret;
> unsigned int i;
>
> - timestamp -= sc->time_offset;
> + // Here we consider timestamp to be PTS, hence try to offset it so
> that we
> + // can search over the DTS timeline.
> + timestamp -= (sc->min_corrected_pts + sc->dts_shift);
>
> ret = mov_seek_fragment(s, st, timestamp);
> if (ret < 0)
> diff --git a/tests/fate/seek.mak b/tests/fate/seek.mak
> index 751873baa4..6a9f843d82 100644
> --- a/tests/fate/seek.mak
> +++ b/tests/fate/seek.mak
> @@ -251,9 +251,15 @@ FATE_SEEK_EXTRA-$(CONFIG_MP3_DEMUXER) +=
> fate-seek-extra-mp3
> FATE_SEEK_EXTRA-$(call ALLYES, CACHE_PROTOCOL PIPE_PROTOCOL MP3_DEMUXER)
> += fate-seek-cache-pipe
> FATE_SEEK_EXTRA-$(CONFIG_MATROSKA_DEMUXER) += fate-seek-mkv-codec-delay
> FATE_SEEK_EXTRA-$(CONFIG_MOV_DEMUXER) += fate-seek-extra-mp4
> +FATE_SEEK_EXTRA-$(CONFIG_MOV_DEMUXER) += fate-seek-empty-edit-mp4
> +FATE_SEEK_EXTRA-$(CONFIG_MOV_DEMUXER) += fate-seek-test-iibbibb-mp4
> +FATE_SEEK_EXTRA-$(CONFIG_MOV_DEMUXER) += fate-seek-test-iibbibb-neg-
> ctts-mp4
>
> fate-seek-extra-mp3: CMD = run libavformat/tests/seek$(EXESUF)
> $(TARGET_SAMPLES)/gapless/gapless.mp3 -fastseek 1
> fate-seek-extra-mp4: CMD = run libavformat/tests/seek$(EXESUF)
> $(TARGET_SAMPLES)/mov/buck480p30_na.mp4 -duration 180 -frames 4
> +fate-seek-empty-edit-mp4: CMD = run libavformat/tests/seek$(EXESUF)
> $(TARGET_SAMPLES)/mov/empty_edit_5s.mp4 -duration 15 -frames 4
> +fate-seek-test-iibbibb-mp4: CMD = run libavformat/tests/seek$(EXESUF)
> $(TARGET_SAMPLES)/mov/test_iibbibb.mp4 -duration 13 -frames 4
> +fate-seek-test-iibbibb-neg-ctts-mp4: CMD = run libavformat/tests/seek$(EXESUF)
> $(TARGET_SAMPLES)/mov/test_iibbibb_neg_ctts.mp4 -duration 13 -frames 4
> fate-seek-cache-pipe: CMD = cat $(TARGET_SAMPLES)/gapless/gapless.mp3 |
> run libavformat/tests/seek$(EXESUF) cache:pipe:0 -read_ahead_limit -1
> fate-seek-mkv-codec-delay: CMD = run libavformat/tests/seek$(EXESUF)
> $(TARGET_SAMPLES)/mkv/codec_delay_opus.mkv
>
> diff --git a/tests/ref/seek/empty-edit-mp4 b/tests/ref/seek/empty-edit-mp4
> new file mode 100644
> index 0000000000..f0a4ad30b0
> --- /dev/null
> +++ b/tests/ref/seek/empty-edit-mp4
> @@ -0,0 +1,134 @@
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:0 ts:-1.000000
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:1 ts: 11.894167
> +ret: 0 st: 0 flags:1 dts: 11.000000 pts: 11.000000 pos: 40515
> size: 3214
> +ret: 0 st: 0 flags:0 dts: 11.100000 pts: 11.100000 pos: 43729
> size: 581
> +ret: 0 st: 0 flags:0 dts: 11.200000 pts: 11.200000 pos: 44310
> size: 432
> +ret: 0 st: 0 flags:0 dts: 11.300000 pts: 11.300000 pos: 44742
> size: 380
> +ret: 0 st: 0 flags:0 ts: 9.788379
> +ret: 0 st: 0 flags:1 dts: 10.000000 pts: 10.000000 pos: 33523
> size: 3221
> +ret: 0 st: 0 flags:0 dts: 10.100000 pts: 10.100000 pos: 36744
> size: 575
> +ret: 0 st: 0 flags:0 dts: 10.200000 pts: 10.200000 pos: 37319
> size: 438
> +ret: 0 st: 0 flags:0 dts: 10.300000 pts: 10.300000 pos: 37757
> size: 449
> +ret: 0 st: 0 flags:1 ts: 7.682520
> +ret: 0 st: 0 flags:1 dts: 7.000000 pts: 7.000000 pos: 13643
> size: 3234
> +ret: 0 st: 0 flags:0 dts: 7.100000 pts: 7.100000 pos: 16877
> size: 585
> +ret: 0 st: 0 flags:0 dts: 7.200000 pts: 7.200000 pos: 17462
> size: 442
> +ret: 0 st: 0 flags:0 dts: 7.300000 pts: 7.300000 pos: 17904
> size: 371
> +ret: 0 st:-1 flags:0 ts: 5.576668
> +ret: 0 st: 0 flags:1 dts: 6.000000 pts: 6.000000 pos: 6953
> size: 3166
> +ret: 0 st: 0 flags:0 dts: 6.100000 pts: 6.100000 pos: 10119
> size: 599
> +ret: 0 st: 0 flags:0 dts: 6.200000 pts: 6.200000 pos: 10718
> size: 418
> +ret: 0 st: 0 flags:0 dts: 6.300000 pts: 6.300000 pos: 11136
> size: 354
> +ret: 0 st:-1 flags:1 ts: 3.470835
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st: 0 flags:0 ts: 1.365039
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st: 0 flags:1 ts:-0.740820
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:0 ts: 12.153336
> +ret: 0 st: 0 flags:1 dts: 13.000000 pts: 13.000000 pos: 54444
> size: 3310
> +ret: 0 st: 0 flags:0 dts: 13.100000 pts: 13.100000 pos: 57754
> size: 540
> +ret: 0 st: 0 flags:0 dts: 13.200000 pts: 13.200000 pos: 58294
> size: 419
> +ret: 0 st: 0 flags:0 dts: 13.300000 pts: 13.300000 pos: 58713
> size: 338
> +ret: 0 st:-1 flags:1 ts: 10.047503
> +ret: 0 st: 0 flags:1 dts: 10.000000 pts: 10.000000 pos: 33523
> size: 3221
> +ret: 0 st: 0 flags:0 dts: 10.100000 pts: 10.100000 pos: 36744
> size: 575
> +ret: 0 st: 0 flags:0 dts: 10.200000 pts: 10.200000 pos: 37319
> size: 438
> +ret: 0 st: 0 flags:0 dts: 10.300000 pts: 10.300000 pos: 37757
> size: 449
> +ret: 0 st: 0 flags:0 ts: 7.941699
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 8.000000 pos: 20396
> size: 3281
> +ret: 0 st: 0 flags:0 dts: 8.100000 pts: 8.100000 pos: 23677
> size: 631
> +ret: 0 st: 0 flags:0 dts: 8.200000 pts: 8.200000 pos: 24308
> size: 349
> +ret: 0 st: 0 flags:0 dts: 8.300000 pts: 8.300000 pos: 24657
> size: 319
> +ret: 0 st: 0 flags:1 ts: 5.835840
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:0 ts: 3.730004
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:1 ts: 1.624171
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st: 0 flags:0 ts:-0.481641
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st: 0 flags:1 ts: 12.412500
> +ret: 0 st: 0 flags:1 dts: 12.000000 pts: 12.000000 pos: 47419
> size: 3229
> +ret: 0 st: 0 flags:0 dts: 12.100000 pts: 12.100000 pos: 50648
> size: 588
> +ret: 0 st: 0 flags:0 dts: 12.200000 pts: 12.200000 pos: 51236
> size: 404
> +ret: 0 st: 0 flags:0 dts: 12.300000 pts: 12.300000 pos: 51640
> size: 415
> +ret: 0 st:-1 flags:0 ts: 10.306672
> +ret: 0 st: 0 flags:1 dts: 11.000000 pts: 11.000000 pos: 40515
> size: 3214
> +ret: 0 st: 0 flags:0 dts: 11.100000 pts: 11.100000 pos: 43729
> size: 581
> +ret: 0 st: 0 flags:0 dts: 11.200000 pts: 11.200000 pos: 44310
> size: 432
> +ret: 0 st: 0 flags:0 dts: 11.300000 pts: 11.300000 pos: 44742
> size: 380
> +ret: 0 st:-1 flags:1 ts: 8.200839
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 8.000000 pos: 20396
> size: 3281
> +ret: 0 st: 0 flags:0 dts: 8.100000 pts: 8.100000 pos: 23677
> size: 631
> +ret: 0 st: 0 flags:0 dts: 8.200000 pts: 8.200000 pos: 24308
> size: 349
> +ret: 0 st: 0 flags:0 dts: 8.300000 pts: 8.300000 pos: 24657
> size: 319
> +ret: 0 st: 0 flags:0 ts: 6.095020
> +ret: 0 st: 0 flags:1 dts: 7.000000 pts: 7.000000 pos: 13643
> size: 3234
> +ret: 0 st: 0 flags:0 dts: 7.100000 pts: 7.100000 pos: 16877
> size: 585
> +ret: 0 st: 0 flags:0 dts: 7.200000 pts: 7.200000 pos: 17462
> size: 442
> +ret: 0 st: 0 flags:0 dts: 7.300000 pts: 7.300000 pos: 17904
> size: 371
> +ret: 0 st: 0 flags:1 ts: 3.989160
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:0 ts: 1.883340
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st:-1 flags:1 ts:-0.222493
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 5.000000 pos: 48
> size: 2917
> +ret: 0 st: 0 flags:0 dts: 5.100000 pts: 5.100000 pos: 2965
> size: 672
> +ret: 0 st: 0 flags:0 dts: 5.200000 pts: 5.200000 pos: 3637
> size: 464
> +ret: 0 st: 0 flags:0 dts: 5.300000 pts: 5.300000 pos: 4101
> size: 454
> +ret: 0 st: 0 flags:0 ts: 12.671680
> +ret: 0 st: 0 flags:1 dts: 13.000000 pts: 13.000000 pos: 54444
> size: 3310
> +ret: 0 st: 0 flags:0 dts: 13.100000 pts: 13.100000 pos: 57754
> size: 540
> +ret: 0 st: 0 flags:0 dts: 13.200000 pts: 13.200000 pos: 58294
> size: 419
> +ret: 0 st: 0 flags:0 dts: 13.300000 pts: 13.300000 pos: 58713
> size: 338
> +ret: 0 st: 0 flags:1 ts: 10.565820
> +ret: 0 st: 0 flags:1 dts: 10.000000 pts: 10.000000 pos: 33523
> size: 3221
> +ret: 0 st: 0 flags:0 dts: 10.100000 pts: 10.100000 pos: 36744
> size: 575
> +ret: 0 st: 0 flags:0 dts: 10.200000 pts: 10.200000 pos: 37319
> size: 438
> +ret: 0 st: 0 flags:0 dts: 10.300000 pts: 10.300000 pos: 37757
> size: 449
> +ret: 0 st:-1 flags:0 ts: 8.460008
> +ret: 0 st: 0 flags:1 dts: 9.000000 pts: 9.000000 pos: 27090
> size: 3182
> +ret: 0 st: 0 flags:0 dts: 9.100000 pts: 9.100000 pos: 30272
> size: 481
> +ret: 0 st: 0 flags:0 dts: 9.200000 pts: 9.200000 pos: 30753
> size: 334
> +ret: 0 st: 0 flags:0 dts: 9.300000 pts: 9.300000 pos: 31087
> size: 328
> +ret: 0 st:-1 flags:1 ts: 6.354175
> +ret: 0 st: 0 flags:1 dts: 6.000000 pts: 6.000000 pos: 6953
> size: 3166
> +ret: 0 st: 0 flags:0 dts: 6.100000 pts: 6.100000 pos: 10119
> size: 599
> +ret: 0 st: 0 flags:0 dts: 6.200000 pts: 6.200000 pos: 10718
> size: 418
> +ret: 0 st: 0 flags:0 dts: 6.300000 pts: 6.300000 pos: 11136
> size: 354
> diff --git a/tests/ref/seek/test-iibbibb-mp4
> b/tests/ref/seek/test-iibbibb-mp4
> new file mode 100644
> index 0000000000..5a89600218
> --- /dev/null
> +++ b/tests/ref/seek/test-iibbibb-mp4
> @@ -0,0 +1,122 @@
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st:-1 flags:0 ts:-1.000000
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st:-1 flags:1 ts: 4.894167
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret:-1 st: 0 flags:0 ts: 10.788330
> +ret: 0 st: 0 flags:1 ts: 3.682495
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st:-1 flags:0 ts: 9.576668
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st:-1 flags:1 ts: 2.470835
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 ts: 8.364990
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st: 0 flags:1 ts: 1.259155
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st:-1 flags:0 ts: 7.153336
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st:-1 flags:1 ts: 0.047503
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:0 ts: 5.941650
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:1 ts: 11.835815
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st:-1 flags:0 ts: 4.730004
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st:-1 flags:1 ts: 10.624171
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st: 0 flags:0 ts: 3.518311
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:1 ts: 9.412476
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st:-1 flags:0 ts: 2.306672
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st:-1 flags:1 ts: 8.200839
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 ts: 1.095032
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:1 ts: 6.989197
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st:-1 flags:0 ts:-0.116660
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st:-1 flags:1 ts: 5.777507
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret:-1 st: 0 flags:0 ts: 11.671692
> +ret: 0 st: 0 flags:1 ts: 4.565857
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret:-1 st:-1 flags:0 ts: 10.460008
> +ret: 0 st:-1 flags:1 ts: 3.354175
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> diff --git a/tests/ref/seek/test-iibbibb-neg-ctts-mp4
> b/tests/ref/seek/test-iibbibb-neg-ctts-mp4
> new file mode 100644
> index 0000000000..5a89600218
> --- /dev/null
> +++ b/tests/ref/seek/test-iibbibb-neg-ctts-mp4
> @@ -0,0 +1,122 @@
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st:-1 flags:0 ts:-1.000000
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st:-1 flags:1 ts: 4.894167
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret:-1 st: 0 flags:0 ts: 10.788330
> +ret: 0 st: 0 flags:1 ts: 3.682495
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st:-1 flags:0 ts: 9.576668
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st:-1 flags:1 ts: 2.470835
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 ts: 8.364990
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st: 0 flags:1 ts: 1.259155
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st:-1 flags:0 ts: 7.153336
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st:-1 flags:1 ts: 0.047503
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:0 ts: 5.941650
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:1 ts: 11.835815
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st:-1 flags:0 ts: 4.730004
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st:-1 flags:1 ts: 10.624171
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 dts: 9.000000 pts: 11.000000 pos: 44894
> size: 1437
> +ret: 0 st: 0 flags:0 dts: 10.000000 pts: 10.000000 pos: 46331
> size: 1186
> +ret:-EOF
> +ret: 0 st: 0 flags:0 ts: 3.518311
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:1 ts: 9.412476
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st:-1 flags:0 ts: 2.306672
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st:-1 flags:1 ts: 8.200839
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:0 dts: 6.000000 pts: 8.000000 pos: 35757
> size: 1273
> +ret: 0 st: 0 flags:0 dts: 7.000000 pts: 7.000000 pos: 37030
> size: 1130
> +ret: 0 st: 0 flags:1 dts: 8.000000 pts: 12.000000 pos: 38160
> size: 6734
> +ret: 0 st: 0 flags:0 ts: 1.095032
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st: 0 flags:1 ts: 6.989197
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret: 0 st:-1 flags:0 ts:-0.116660
> +ret: 0 st: 0 flags:1 dts:-2.000000 pts: 0.000000 pos: 48
> size: 7804
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st:-1 flags:1 ts: 5.777507
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret:-1 st: 0 flags:0 ts: 11.671692
> +ret: 0 st: 0 flags:1 ts: 4.565857
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> +ret: 0 st: 0 flags:0 dts: 3.000000 pts: 5.000000 pos: 25805
> size: 1247
> +ret: 0 st: 0 flags:0 dts: 4.000000 pts: 4.000000 pos: 27052
> size: 1110
> +ret: 0 st: 0 flags:1 dts: 5.000000 pts: 9.000000 pos: 28162
> size: 7595
> +ret:-1 st:-1 flags:0 ts: 10.460008
> +ret: 0 st:-1 flags:1 ts: 3.354175
> +ret: 0 st: 0 flags:1 dts:-1.000000 pts: 3.000000 pos: 7852
> size: 7808
> +ret: 0 st: 0 flags:0 dts: 0.000000 pts: 2.000000 pos: 15660
> size: 1301
> +ret: 0 st: 0 flags:0 dts: 1.000000 pts: 1.000000 pos: 16961
> size: 1114
> +ret: 0 st: 0 flags:1 dts: 2.000000 pts: 6.000000 pos: 18075
> size: 7730
> --
> 2.16.2.660.g709887971b-goog
>
>
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