matroskaenc: Write codec time base as default duration for video tracks.

This isn't exactly semantically equivalent, but the field has already been
long abused to mean this, and writing it helps in determining a decent cfr
time base when transcoding from a mkv where the video codec stores none (VP8).

backport r23284 by conrad


Originally committed as revision 23365 to svn://svn.ffmpeg.org/ffmpeg/branches/0.6

3 files changed, 25 insertions, 24 deletions

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 2fa31bad0a..01e6e79f3f 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -566,6 +566,7 @@ static int mkv_write_tracks(AVFormatContext *s)
         switch (codec->codec_type) {
             case AVMEDIA_TYPE_VIDEO:
                 put_ebml_uint(pb, MATROSKA_ID_TRACKTYPE, MATROSKA_TRACK_TYPE_VIDEO);
+                put_ebml_uint(pb, MATROSKA_ID_TRACKDEFAULTDURATION, av_q2d(codec->time_base)*1E9);
 
                 if (!native_id &&
                       ff_codec_get_tag(codec_movvideo_tags, codec->codec_id) &&
diff --git a/tests/ref/lavf/mkv b/tests/ref/lavf/mkv
index bcf7ff309f..213d38b758 100644
--- a/tests/ref/lavf/mkv
+++ b/tests/ref/lavf/mkv
@@ -1,3 +1,3 @@
-a0ce20d849aea1c6e138dd1101c8f162 *./tests/data/lavf/lavf.mkv
-  320463 ./tests/data/lavf/lavf.mkv
+cf230e089e737ed9449fbfb3cb87da92 *./tests/data/lavf/lavf.mkv
+  320471 ./tests/data/lavf/lavf.mkv
 ./tests/data/lavf/lavf.mkv CRC=0x2a83e6b0
diff --git a/tests/ref/seek/lavf.mkv.ref b/tests/ref/seek/lavf.mkv.ref
index 0cc6839a8a..5af4488d2c 100644
--- a/tests/ref/seek/lavf.mkv.ref
+++ b/tests/ref/seek/lavf.mkv.ref
@@ -1,53 +1,53 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291894 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291902 size: 27834
 ret: 0         st: 0 flags:0  ts: 0.788000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291894 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291902 size: 27834
 ret: 0         st: 0 flags:1  ts:-0.317000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st: 1 flags:0  ts: 2.577000
 ret:-EOF
 ret: 0         st: 1 flags:1  ts: 1.471000
-ret: 0         st: 1 flags:1 dts: 1.019000 pts: 1.019000 pos: 320167 size:   209
+ret: 0         st: 1 flags:1 dts: 1.019000 pts: 1.019000 pos: 320175 size:   209
 ret: 0         st:-1 flags:0  ts: 0.365002
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146679 size: 27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146687 size: 27925
 ret: 0         st:-1 flags:1  ts:-0.740831
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st: 0 flags:0  ts: 2.153000
 ret:-EOF
 ret: 0         st: 0 flags:1  ts: 1.048000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291894 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291902 size: 27834
 ret: 0         st: 1 flags:0  ts:-0.058000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st: 1 flags:1  ts: 2.836000
-ret: 0         st: 1 flags:1 dts: 1.019000 pts: 1.019000 pos: 320167 size:   209
+ret: 0         st: 1 flags:1 dts: 1.019000 pts: 1.019000 pos: 320175 size:   209
 ret: 0         st:-1 flags:0  ts: 1.730004
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146679 size: 27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146687 size: 27925
 ret: 0         st: 0 flags:0  ts:-0.482000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st: 0 flags:1  ts: 2.413000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291894 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291902 size: 27834
 ret: 0         st: 1 flags:0  ts: 1.307000
 ret:-EOF
 ret: 0         st: 1 flags:1  ts: 0.201000
-ret: 0         st: 1 flags:1 dts: 0.183000 pts: 0.183000 pos:  72075 size:   209
+ret: 0         st: 1 flags:1 dts: 0.183000 pts: 0.183000 pos:  72083 size:   209
 ret: 0         st:-1 flags:0  ts:-0.904994
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st:-1 flags:1  ts: 1.989173
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291894 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291902 size: 27834
 ret: 0         st: 0 flags:0  ts: 0.883000
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291894 size: 27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 291902 size: 27834
 ret: 0         st: 0 flags:1  ts:-0.222000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837
 ret: 0         st: 1 flags:0  ts: 2.672000
 ret:-EOF
 ret: 0         st: 1 flags:1  ts: 1.566000
-ret: 0         st: 1 flags:1 dts: 1.019000 pts: 1.019000 pos: 320167 size:   209
+ret: 0         st: 1 flags:1 dts: 1.019000 pts: 1.019000 pos: 320175 size:   209
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146679 size: 27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 146687 size: 27925
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    505 size: 27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    513 size: 27837