[gstreamer-bugs] [Bug 640589] New: invalid vorbis header when reading webm from ffmpeg over pipe

Tue Jan 25 13:56:33 PST 2011

https://bugzilla.gnome.org/show_bug.cgi?id=640589
  GStreamer | gst-plugins-good | 0.10.27

           Summary: invalid vorbis header when reading webm from ffmpeg
                    over pipe
    Classification: Desktop
           Product: GStreamer
           Version: 0.10.27
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: Ralf.Pichner at fernuni-hagen.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---

I tried to stream webm from ffmpeg to gstreamer, using this command:

ffmpeg -f x11grab -s 1280x1024 -r 15 -i :0.0 -f alsa -i default -vcodec libvpx
-b 420k -minrate 420k -maxrate 420k -bufsize 835k -s 640x512  -g 30 -acodec
libvorbis -ab 64000 -ac 1 -f webm - | gst-launch-0.10  filesrc
location=/dev/stdin ! matroskademux name=demux ! queue ! webmmux name=mux
streamable=true ! gdppay ! tcpserversink, host=127.0.0.1 demux.audio_0 !
multiqueue ! mux.audio_0

the result is an invalid vorbis header error:

FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  built on Jan 21 2011 19:41:34 with gcc 4.4.4
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--mandir=/usr/share/man --enable-static --enable-shared
--cc=x86_64-pc-linux-gnu-gcc --enable-gpl --enable-version3 --enable-postproc
--enable-avfilter --disable-stripping --disable-debug --disable-doc
--disable-static --disable-optimizations --enable-runtime-cpudetect
--enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264
--enable-libxvid --disable-indev=v4l --disable-indev=v4l2 --disable-indev=oss
--enable-x11grab --disable-outdev=oss --enable-pthreads --enable-libdirac
--enable-librtmp --enable-libspeex --enable-libvpx --enable-libopenjpeg
--disable-altivec --cpu=amdfam10 --enable-hardcoded-tables
  libavutil     50.36. 0 / 50.36. 0
  libavcore      0.16. 1 /  0.16. 1
  libavcodec    52.108. 0 / 52.108. 0
  libavformat   52.93. 0 / 52.93. 0
  libavdevice   52. 2. 3 / 52. 2. 3
  libavfilter    1.74. 0 /  1.74. 0
  libswscale     0.12. 0 /  0.12. 0
  libpostproc   51. 2. 0 / 51. 2. 0
[x11grab @ 0x640d00] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1280
height: 1024
[x11grab @ 0x640d00] shared memory extension  found
Leitung wird auf PAUSIERT gesetzt ...
Leitung läuft vor …
[x11grab @ 0x640d00] Estimating duration from bitrate, this may be inaccurate
Input #0, x11grab, from ':0.0':                                                 
  Duration: N/A, start: 1295884126.689013, bitrate: 629145 kb/s
    Stream #0.0: Video: rawvideo, bgra, 1280x1024, 629145 kb/s, 15 tbr, 1000k
tbn, 15 tbc
[alsa @ 0x6506a0] capture with some ALSA plugins, especially dsnoop, may hang.
[alsa @ 0x6506a0] Estimating duration from bitrate, this may be inaccurate      
Input #1, alsa, from 'default':                                                 
  Duration: N/A, start: 1295884126.706427, bitrate: N/A
    Stream #1.0: Audio: pcm_s16le, 44100 Hz, 1 channels, s16, 705 kb/s
[buffer @ 0x6734b0] w:1280 h:1024 pixfmt:bgra
[scale @ 0x68f300] w:1280 h:1024 fmt:bgra -> w:640 h:512 fmt:yuv420p flags:0x4
[libvpx @ 0x64f8f0] v0.9.5
Output #0, webm, to 'pipe:':
  Metadata:
    encoder         : Lavf52.93.0
    Stream #0.0: Video: libvpx, yuv420p, 640x512, q=2-31, 420 kb/s, 1k tbn, 15
tbc
    Stream #0.1: Audio: libvorbis, 44100 Hz, 1 channels, s16, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #1.0 -> #0.1
Press [q] to stop encoding
FEHLER: Von Element /GstPipeline:pipeline0/GstWebMMux:mux: Der Datenstrom
konnte nicht multiplext werden.
Zusätzliche Fehlerdiagnoseinformation:
matroska-mux.c(1547): gst_matroska_mux_audio_pad_setcaps ():
/GstPipeline:pipeline0/GstWebMMux:mux:
vorbis stream headers missing or malformed
FEHLER: Leitung läuft nicht vor.
Leitung wird auf NULL gesetzt ...
Leitung wird geleert

When removing the audio part and remuxing only the video, it works. Even simply
saving the webm to a file

ffmpeg -f x11grab -s 1280x1024 -r 15 -i :0.0 -f alsa -i default -vcodec libvpx
-b 420k -minrate 420k -maxrate 420k -bufsize 835k -s 640x512  -g 30 -acodec
libvorbis -ab 64000 -ac 1 -f webm - | gst-launch-0.10  filesrc
location=/dev/stdin ! queue ! filesink location=/data/test3.webm

results into a not valid webm file

./mkvalidator --details /data/test3.webmERR0C2: The timecode of the Cluster at
46225 is not incrementing
WRN0C0: First Block for video track #1 in Cluster at 46225 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 76805 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 109721 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 179114 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 224566 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 257448 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 308976 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 356695 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 397164 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 420759 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 453680 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 514109 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 557515 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 590351 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 627573 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 682634 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 735132 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 775979 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 813478 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 869347 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 903871 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 921525 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 932792 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 972263 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1006105 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1023530 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1039998 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1079491 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1113718 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1131047 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1186514 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1221165 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1244054 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1257762 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1298679 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1336815 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1358267 is not a keyframe
WRN0C0: First Block for video track #1 in Cluster at 1431190 is not a keyframe
WRN800: The segment has Clusters but no Cues section (bad for seeking)
.       file created with Lavf52.93.0 / Lavf52.93.0

Everthing running on x86_64 Gentoo, gstreamer-0.10.32, gst-plugins-good-0.10.27

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