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avformat/matroskaenc: Pass dispositions through unchanged by default

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Up until now, the Matroska muxer did not use the dispositions it is
given as-is; instead it by default overrode the disposition of the first
track of a kind (audio, video, subtitles) if no track of this kind has
the default disposition set. And up until recently, it also enforced
by default that no more than one track of each kind be marked as
default.

The rationale for the former is that there are lots of containers which
lack the concept of default streams, so that it is not uncommon for no
stream to be marked as default at all; the rationale for the latter was
that up until recently, it was dubious whether the Matroska specification
allowed more than one default stream for track type (e.g. mkvmerge
disallowed it). It was this point which led to the implementation of
the above mentioned behaviour inspired by mkvmerge.

Yet the Matroska specifications have changed and now explicitly allow
to set more than one track of each type as default, so that the main
reason of not using the dispositions as-is was rendered moot. Therefore
this commit changes the default to pass the disposition through.

The matroska-mpegts-remux FATE-test has been updated to still use the
old "infer" mode so that it is still covered by FATE; the
matroska-zero-length-block test has also been updated to cover
the infer_no_subs mode. The references for lots of other FATE tests
needed to be updated because of a newly added FlagDefault element with
value zero (whereas a FlagDefault with value 1 needn't be coded at all,
as it coincided with the default value of said element).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-08-20 08:10:12 +02:00
parent beb60abab5
commit 750631b098
15 changed files with 46 additions and 46 deletions
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2
doc/muxers.texi
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@ -1564,7 +1564,7 @@ have no effect if it is not.
@item default_mode @item default_mode
This option controls how the FlagDefault of the output tracks will be set. This option controls how the FlagDefault of the output tracks will be set.
It influences which tracks players should play by default. The default mode It influences which tracks players should play by default. The default mode
is @samp{infer}. is @samp{passthrough}.
@table @samp @table @samp
@item infer @item infer
Every track with disposition default will have the FlagDefault set. Every track with disposition default will have the FlagDefault set.

2
libavformat/matroskaenc.c
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@ -2818,7 +2818,7 @@ static const AVOption options[] = {
{ "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "flipped_raw_rgb", "Raw RGB bitmaps in VFW mode are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, { "flipped_raw_rgb", "Raw RGB bitmaps in VFW mode are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, { "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ "default_mode", "Controls how a track's FlagDefault is inferred", OFFSET(default_mode), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MODE_INFER }, DEFAULT_MODE_INFER, DEFAULT_MODE_PASSTHROUGH, FLAGS, "default_mode" }, { "default_mode", "Controls how a track's FlagDefault is inferred", OFFSET(default_mode), AV_OPT_TYPE_INT, { .i64 = DEFAULT_MODE_PASSTHROUGH }, DEFAULT_MODE_INFER, DEFAULT_MODE_PASSTHROUGH, FLAGS, "default_mode" },
{ "infer", "For each track type, mark each track of disposition default as default; if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER }, 0, 0, FLAGS, "default_mode" }, { "infer", "For each track type, mark each track of disposition default as default; if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER }, 0, 0, FLAGS, "default_mode" },
{ "infer_no_subs", "For each track type, mark each track of disposition default as default; for audio and video: if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER_NO_SUBS }, 0, 0, FLAGS, "default_mode" }, { "infer_no_subs", "For each track type, mark each track of disposition default as default; for audio and video: if none exists, mark the first track as default.", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_INFER_NO_SUBS }, 0, 0, FLAGS, "default_mode" },
{ "passthrough", "Use the disposition flag as-is", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_PASSTHROUGH }, 0, 0, FLAGS, "default_mode" }, { "passthrough", "Use the disposition flag as-is", 0, AV_OPT_TYPE_CONST, { .i64 = DEFAULT_MODE_PASSTHROUGH }, 0, 0, FLAGS, "default_mode" },

2
libavformat/version.h
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@ -33,7 +33,7 @@
// Also please add any ticket numbers that you believe might be affected here // Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 59 #define LIBAVFORMAT_VERSION_MAJOR 59
#define LIBAVFORMAT_VERSION_MINOR 4 #define LIBAVFORMAT_VERSION_MINOR 4
#define LIBAVFORMAT_VERSION_MICRO 101 #define LIBAVFORMAT_VERSION_MICRO 102
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \ LIBAVFORMAT_VERSION_MINOR, \

4
tests/fate/matroska.mak
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@ -65,7 +65,7 @@ fate-webm-dash-chapters: CMD = transcode ogg $(TARGET_SAMPLES)/vorbis/vorbis_cha
# It furthermore tests correct propagation of the description tag. # It furthermore tests correct propagation of the description tag.
FATE_MATROSKA_FFMPEG_FFPROBE-$(call DEMMUX, MATROSKA, MATROSKA) \ FATE_MATROSKA_FFMPEG_FFPROBE-$(call DEMMUX, MATROSKA, MATROSKA) \
+= fate-matroska-zero-length-block += fate-matroska-zero-length-block
fate-matroska-zero-length-block: CMD = transcode matroska $(TARGET_SAMPLES)/mkv/zero_length_block.mks matroska "-c:s copy -dash 1 -dash_track_number 2000000000 -reserve_index_space 62 -metadata_header_padding 1" "-c:s copy" "" "-show_entries stream_tags=description" fate-matroska-zero-length-block: CMD = transcode matroska $(TARGET_SAMPLES)/mkv/zero_length_block.mks matroska "-c:s copy -dash 1 -dash_track_number 2000000000 -reserve_index_space 62 -metadata_header_padding 1 -default_mode infer_no_subs" "-c:s copy" "" "-show_entries stream_tags=description"
# This test the following features of the Matroska muxer: Writing projection # This test the following features of the Matroska muxer: Writing projection
# stream side-data; not setting any track to default if the user requested it; # stream side-data; not setting any track to default if the user requested it;
@ -123,7 +123,7 @@ FATE_MATROSKA_FFMPEG_FFPROBE-$(call ALLYES, FILE_PROTOCOL MPEGTS_DEMUXER \
MATROSKA_DEMUXER FRAMECRC_MUXER \ MATROSKA_DEMUXER FRAMECRC_MUXER \
PIPE_PROTOCOL) \ PIPE_PROTOCOL) \
+= fate-matroska-mpegts-remux += fate-matroska-mpegts-remux
fate-matroska-mpegts-remux: CMD = transcode mpegts $(TARGET_SAMPLES)/mpegts/pmtchange.ts matroska "-map 0:2 -map 0:2 -c copy -disposition:a:1 -visual_impaired+hearing_impaired" "-map 0 -c copy" "" "-show_entries stream_disposition:stream=index" fate-matroska-mpegts-remux: CMD = transcode mpegts $(TARGET_SAMPLES)/mpegts/pmtchange.ts matroska "-map 0:2 -map 0:2 -c copy -disposition:a:1 -visual_impaired+hearing_impaired -default_mode infer" "-map 0 -c copy" "" "-show_entries stream_disposition:stream=index"
FATE_MATROSKA_FFPROBE-$(call ALLYES, MATROSKA_DEMUXER) += fate-matroska-spherical-mono FATE_MATROSKA_FFPROBE-$(call ALLYES, MATROSKA_DEMUXER) += fate-matroska-spherical-mono
fate-matroska-spherical-mono: CMD = run ffprobe$(PROGSSUF)$(EXESUF) -show_entries stream_side_data_list -select_streams v -v 0 $(TARGET_SAMPLES)/mkv/spherical.mkv fate-matroska-spherical-mono: CMD = run ffprobe$(PROGSSUF)$(EXESUF) -show_entries stream_side_data_list -select_streams v -v 0 $(TARGET_SAMPLES)/mkv/spherical.mkv

4
tests/fate/wavpack.mak
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@ -91,12 +91,12 @@ fate-wavpack-matroskamode: CMD = md5 -i $(TARGET_SAMPLES)/wavpack/special/matros
FATE_WAVPACK-$(call DEMMUX, WV, MATROSKA) += fate-wavpack-matroska_mux-mono FATE_WAVPACK-$(call DEMMUX, WV, MATROSKA) += fate-wavpack-matroska_mux-mono
fate-wavpack-matroska_mux-mono: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/num_channels/mono_16bit_int.wv -c copy -fflags +bitexact -f matroska fate-wavpack-matroska_mux-mono: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/num_channels/mono_16bit_int.wv -c copy -fflags +bitexact -f matroska
fate-wavpack-matroska_mux-mono: CMP = oneline fate-wavpack-matroska_mux-mono: CMP = oneline
fate-wavpack-matroska_mux-mono: REF = 0a10b6cd4d64c25ced75f52d1c6929a7 fate-wavpack-matroska_mux-mono: REF = 5863eb94f7583aa9c5fded17474f2e7c
FATE_WAVPACK-$(call DEMMUX, WV, MATROSKA) += fate-wavpack-matroska_mux-61 FATE_WAVPACK-$(call DEMMUX, WV, MATROSKA) += fate-wavpack-matroska_mux-61
fate-wavpack-matroska_mux-61: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/num_channels/eva_2.22_6.1_16bit-partial.wv -c copy -fflags +bitexact -f matroska fate-wavpack-matroska_mux-61: CMD = md5pipe -i $(TARGET_SAMPLES)/wavpack/num_channels/eva_2.22_6.1_16bit-partial.wv -c copy -fflags +bitexact -f matroska
fate-wavpack-matroska_mux-61: CMP = oneline fate-wavpack-matroska_mux-61: CMP = oneline
fate-wavpack-matroska_mux-61: REF = fee4bb1d6cf2d54f78eddc4483e7c990 fate-wavpack-matroska_mux-61: REF = 2bbb393d060fa841f1172028f2c69b3a
FATE_SAMPLES_AVCONV += $(FATE_WAVPACK-yes) FATE_SAMPLES_AVCONV += $(FATE_WAVPACK-yes)
fate-wavpack: $(FATE_WAVPACK-yes) fate-wavpack: $(FATE_WAVPACK-yes)

4
tests/ref/fate/aac-autobsf-adtstoasc
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@ -1,5 +1,5 @@
5088977b7f13181d707a4077771e4552 *tests/data/fate/aac-autobsf-adtstoasc.matroska 224607440d242dad567b8ee2ed3afeac *tests/data/fate/aac-autobsf-adtstoasc.matroska
6648 tests/data/fate/aac-autobsf-adtstoasc.matroska 6651 tests/data/fate/aac-autobsf-adtstoasc.matroska
#extradata 0: 2, 0x0030001c #extradata 0: 2, 0x0030001c
#tb 0: 1/1000 #tb 0: 1/1000
#media_type 0: audio #media_type 0: audio

2
tests/ref/fate/binsub-mksenc
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@ -1 +1 @@
5706cf33f9ded660eb404275ec136127 490b1b4beb4a614c06004609039ce779

4
tests/ref/fate/matroska-h264-remux
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@ -1,5 +1,5 @@
ded6da7e46ce7df1232b116afb0b2f0a *tests/data/fate/matroska-h264-remux.matroska 36fda8942bfed91fed04c5ba63dc8b1a *tests/data/fate/matroska-h264-remux.matroska
2036083 tests/data/fate/matroska-h264-remux.matroska 2036089 tests/data/fate/matroska-h264-remux.matroska
#tb 0: 1/25 #tb 0: 1/25
#media_type 0: video #media_type 0: video
#codec_id 0: rawvideo #codec_id 0: rawvideo

4
tests/ref/fate/matroska-mastering-display-metadata
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@ -1,5 +1,5 @@
542ababe5c088ab925ee49373d8b8a85 *tests/data/fate/matroska-mastering-display-metadata.matroska 4f97d718f706e241df9f6c95ac1c721a *tests/data/fate/matroska-mastering-display-metadata.matroska
1669695 tests/data/fate/matroska-mastering-display-metadata.matroska 1669701 tests/data/fate/matroska-mastering-display-metadata.matroska
#extradata 0: 4, 0x040901a3 #extradata 0: 4, 0x040901a3
#extradata 3: 200, 0x506463a8 #extradata 3: 200, 0x506463a8
#tb 0: 1/1000 #tb 0: 1/1000

4
tests/ref/fate/webm-dash-chapters
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@ -1,5 +1,5 @@
f94bcae96166ad246a4b76605a4b3874 *tests/data/fate/webm-dash-chapters.webm c39ad75ef516d1d2e1332d960ad1057b *tests/data/fate/webm-dash-chapters.webm
111236 tests/data/fate/webm-dash-chapters.webm 111239 tests/data/fate/webm-dash-chapters.webm
#extradata 0: 3469, 0xc6769ddc #extradata 0: 3469, 0xc6769ddc
#tb 0: 1/1000 #tb 0: 1/1000
#media_type 0: audio #media_type 0: audio

4
tests/ref/lavf-fate/av1.mkv
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@ -1,3 +1,3 @@
77138a0e07ebd1c6ff2f69305e2f5c79 *tests/data/lavf-fate/lavf.av1.mkv 61e66b67c0c38532f6c6edc8c9d32e48 *tests/data/lavf-fate/lavf.av1.mkv
55653 tests/data/lavf-fate/lavf.av1.mkv 55656 tests/data/lavf-fate/lavf.av1.mkv
tests/data/lavf-fate/lavf.av1.mkv CRC=0x7c27cc15 tests/data/lavf-fate/lavf.av1.mkv CRC=0x7c27cc15

4
tests/ref/lavf/mka
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@ -1,3 +1,3 @@
ea812a6619f4f0d266bec82fcfa54e78 *tests/data/lavf/lavf.mka 52d2c70afe0f9ac510819f723b5ceb3b *tests/data/lavf/lavf.mka
43580 tests/data/lavf/lavf.mka 43583 tests/data/lavf/lavf.mka
tests/data/lavf/lavf.mka CRC=0x3a1da17e tests/data/lavf/lavf.mka CRC=0x3a1da17e

4
tests/ref/lavf/mkv
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@ -1,3 +1,3 @@
c984a76e996f43943d2fe9eb5f2495e4 *tests/data/lavf/lavf.mkv c1af29ab33c9477049672b62da221552 *tests/data/lavf/lavf.mkv
320432 tests/data/lavf/lavf.mkv 320438 tests/data/lavf/lavf.mkv
tests/data/lavf/lavf.mkv CRC=0xec6c3c68 tests/data/lavf/lavf.mkv CRC=0xec6c3c68

4
tests/ref/lavf/mkv_attachment
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@ -1,3 +1,3 @@
8182124c770de9579e6d0d6759d01655 *tests/data/lavf/lavf.mkv_attachment a669ae1a502ff0c487eee99753e7bef0 *tests/data/lavf/lavf.mkv_attachment
472587 tests/data/lavf/lavf.mkv_attachment 472593 tests/data/lavf/lavf.mkv_attachment
tests/data/lavf/lavf.mkv_attachment CRC=0xec6c3c68 tests/data/lavf/lavf.mkv_attachment CRC=0xec6c3c68

44
tests/ref/seek/lavf-mkv
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@ -1,48 +1,48 @@
ret: 0 st: 1 flags:1 dts: 0.000000 pts: 0.000000 pos: 680 size: 208 ret: 0 st: 1 flags:1 dts: 0.000000 pts: 0.000000 pos: 686 size: 208
ret: 0 st:-1 flags:0 ts:-1.000000 ret: 0 st:-1 flags:0 ts:-1.000000
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837
ret: 0 st:-1 flags:1 ts: 1.894167 ret: 0 st:-1 flags:1 ts: 1.894167
ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292312 size: 27834 ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292318 size: 27834
ret: 0 st: 0 flags:0 ts: 0.788000 ret: 0 st: 0 flags:0 ts: 0.788000
ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292312 size: 27834 ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292318 size: 27834
ret: 0 st: 0 flags:1 ts:-0.317000 ret: 0 st: 0 flags:1 ts:-0.317000
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837
ret:-1 st: 1 flags:0 ts: 2.577000 ret:-1 st: 1 flags:0 ts: 2.577000
ret: 0 st: 1 flags:1 ts: 1.471000 ret: 0 st: 1 flags:1 ts: 1.471000
ret: 0 st: 1 flags:1 dts: 0.993000 pts: 0.993000 pos: 320153 size: 209 ret: 0 st: 1 flags:1 dts: 0.993000 pts: 0.993000 pos: 320159 size: 209
ret: 0 st:-1 flags:0 ts: 0.365002 ret: 0 st:-1 flags:0 ts: 0.365002
ret: 0 st: 0 flags:1 dts: 0.491000 pts: 0.491000 pos: 146864 size: 27925 ret: 0 st: 0 flags:1 dts: 0.491000 pts: 0.491000 pos: 146870 size: 27925
ret: 0 st:-1 flags:1 ts:-0.740831 ret: 0 st:-1 flags:1 ts:-0.740831
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837
ret:-1 st: 0 flags:0 ts: 2.153000 ret:-1 st: 0 flags:0 ts: 2.153000
ret: 0 st: 0 flags:1 ts: 1.048000 ret: 0 st: 0 flags:1 ts: 1.048000
ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292312 size: 27834 ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292318 size: 27834
ret: 0 st: 1 flags:0 ts:-0.058000 ret: 0 st: 1 flags:0 ts:-0.058000
ret: 0 st: 1 flags:1 dts: 0.000000 pts: 0.000000 pos: 680 size: 208 ret: 0 st: 1 flags:1 dts: 0.000000 pts: 0.000000 pos: 686 size: 208
ret: 0 st: 1 flags:1 ts: 2.836000 ret: 0 st: 1 flags:1 ts: 2.836000
ret: 0 st: 1 flags:1 dts: 0.993000 pts: 0.993000 pos: 320153 size: 209 ret: 0 st: 1 flags:1 dts: 0.993000 pts: 0.993000 pos: 320159 size: 209
ret:-1 st:-1 flags:0 ts: 1.730004 ret:-1 st:-1 flags:0 ts: 1.730004
ret: 0 st:-1 flags:1 ts: 0.624171 ret: 0 st:-1 flags:1 ts: 0.624171
ret: 0 st: 0 flags:1 dts: 0.491000 pts: 0.491000 pos: 146864 size: 27925 ret: 0 st: 0 flags:1 dts: 0.491000 pts: 0.491000 pos: 146870 size: 27925
ret: 0 st: 0 flags:0 ts:-0.482000 ret: 0 st: 0 flags:0 ts:-0.482000
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837
ret: 0 st: 0 flags:1 ts: 2.413000 ret: 0 st: 0 flags:1 ts: 2.413000
ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292312 size: 27834 ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292318 size: 27834
ret:-1 st: 1 flags:0 ts: 1.307000 ret:-1 st: 1 flags:0 ts: 1.307000
ret: 0 st: 1 flags:1 ts: 0.201000 ret: 0 st: 1 flags:1 ts: 0.201000
ret: 0 st: 1 flags:1 dts: 0.000000 pts: 0.000000 pos: 680 size: 208 ret: 0 st: 1 flags:1 dts: 0.000000 pts: 0.000000 pos: 686 size: 208
ret: 0 st:-1 flags:0 ts:-0.904994 ret: 0 st:-1 flags:0 ts:-0.904994
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837
ret: 0 st:-1 flags:1 ts: 1.989173 ret: 0 st:-1 flags:1 ts: 1.989173
ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292312 size: 27834 ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292318 size: 27834
ret: 0 st: 0 flags:0 ts: 0.883000 ret: 0 st: 0 flags:0 ts: 0.883000
ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292312 size: 27834 ret: 0 st: 0 flags:1 dts: 0.971000 pts: 0.971000 pos: 292318 size: 27834
ret: 0 st: 0 flags:1 ts:-0.222000 ret: 0 st: 0 flags:1 ts:-0.222000
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837
ret:-1 st: 1 flags:0 ts: 2.672000 ret:-1 st: 1 flags:0 ts: 2.672000
ret: 0 st: 1 flags:1 ts: 1.566000 ret: 0 st: 1 flags:1 ts: 1.566000
ret: 0 st: 1 flags:1 dts: 0.993000 pts: 0.993000 pos: 320153 size: 209 ret: 0 st: 1 flags:1 dts: 0.993000 pts: 0.993000 pos: 320159 size: 209
ret: 0 st:-1 flags:0 ts: 0.460008 ret: 0 st:-1 flags:0 ts: 0.460008
ret: 0 st: 0 flags:1 dts: 0.491000 pts: 0.491000 pos: 146864 size: 27925 ret: 0 st: 0 flags:1 dts: 0.491000 pts: 0.491000 pos: 146870 size: 27925
ret: 0 st:-1 flags:1 ts:-0.645825 ret: 0 st:-1 flags:1 ts:-0.645825
ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 896 size: 27837 ret: 0 st: 0 flags:1 dts: 0.011000 pts: 0.011000 pos: 902 size: 27837