[FFmpeg-user] Webm Wrong Displaysize

[Mathieu Goutfreind]

Hello,

I've got a small problem with webm.
Using ffmpeg the displaysize is incorrect.

Have you got a clue ?

Regards

Command used : 
#ffmpeg -i M2U00008.MPG -threads 4 -f webm -vcodec libvpx -deinterlace
-sameq -acodec libvorbis -alang fr -aq 90 -ac 2 -ab 160k -y
M2U00008.webm

FFmpeg version SVN-r25767, Copyright (c) 2000-2010 the FFmpeg developers
  built on Jun 11 2011 20:21:36 with gcc 4.4.5
  configuration: --prefix=/usr --libdir=/usr/lib64
--shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared
--cc=x86_64-pc-linux-gnu-gcc --disable-static --enable-gpl
--enable-version3 --enable-postproc --enable-avfilter
--disable-stripping --disable-debug --disable-doc --disable-network
--disable-vaapi --disable-vdpau --enable-libmp3lame --enable-libtheora
--enable-libvorbis --enable-libx264 --enable-libfaac --enable-nonfree
--disable-indev=v4l --disable-indev=v4l2 --disable-indev=oss
--disable-indev=jack --enable-x11grab --disable-outdev=oss
--enable-pthreads --enable-libgsm --enable-libdirac --enable-libspeex
--enable-libvpx --enable-libopenjpeg --disable-altivec
--enable-hardcoded-tables libavutil     50.33. 0 / 50.33. 0
libavcore      0.13. 0 /  0.13. 0 libavcodec    52.96. 0 / 52.96. 0
libavformat   52.84. 0 / 52.84. 0 libavdevice   52. 2. 2 / 52. 2. 2
libavfilter    1.62. 0 /  1.62. 0 libswscale     0.12. 0 /  0.12. 0
libpostproc   51. 2. 0 / 51. 2. 0 Input #0, mpeg, from 'M2U00008.MPG':
Duration: 00:03:58.55, start: 0.072389, bitrate: 9624 kb/s Stream
#0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45 DAR 16:9],
9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0.1[0x80]: Audio:
ac3, 48000 Hz, 5.1, s16, 448 kb/s [buffer @ 0x28c8280] w:720 h:576
pixfmt:yuv420p [scale @ 0x28c0f30] w:720 h:576 fmt:yuv420p -> w:768
h:576 fmt:yuv420p flags:0xa0000004 [libvpx @ 0x23a4090] v0.9.5 Output
#0, webm, to 'M2U00008.webm': Metadata: encoder         : Lavf52.84.0
Stream #0.0: Video: libvpx, yuv420p, 768x576 [PAR 4:3 DAR 16:9],
q=2-31, 200 kb/s, 1k tbn, 25 tbc Stream #0.1(fr): Audio: libvorbis,
48000 Hz, 2 channels, s16, 160 kb/s Stream mapping: Stream #0.0 -> #0.0
Stream #0.1 -> #0.1

 # mkvinfo M2U00008.webm 
+ EBML head
|+ EBML version: 1
|+ EBML read version: 1
|+ EBML maximum ID length: 4
|+ EBML maximum size length: 8
|+ Doc type: webm
|+ Doc type version: 2
|+ Doc type read version: 2
+ Segment, size 23370077
|+ Seek head (subentries will be skipped)
|+ EbmlVoid (size: 162)
|+ Segment information
| + Timecode scale: 1000000
| + Muxing application: Lavf52.84.0
| + Writing application: Lavf52.84.0
| + Segment UID: 0xe8 0x37 0x5c 0x8a 0xb7 0xae 0x41 0x57 0x4f 0xc3 0x1b
 0xe6 0x8f 0xdc 0xf7 0x00 | + Duration: 106.480s (00:01:46.480)
|+ Segment tracks
| + A track
|  + Track number: 1
|  + Track UID: 1
|  + Lacing flag: 0
|  + Language: und
|  + Codec ID: V_VP8
|  + Track type: video
|  + Default duration: 40.000ms (25.000 fps for a video track)
|  + Video track
|   + Pixel width: 768
|   + Pixel height: 576
|   + Display width: 1024
|   + Display height: 576
|   + Display unit: 3
| + A track
|  + Track number: 2
|  + Track UID: 2
|  + Lacing flag: 0
|  + Language: fr
|  + Codec ID: A_VORBIS
|  + Track type: audio
|  + Audio track
|   + Channels: 2
|   + Sampling frequency: 48000
|   + Bit depth: 16
|  + CodecPrivate, length 4022
|+ Cluster