[gstreamer-bugs] [Bug 476148] New: errors decoding MPEG-4 video stream

[GStreamer (bugzilla.gnome.org)]

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=476148

  GStreamer | gst-ffmpeg | Ver: 0.10.14
           Summary: errors decoding MPEG-4 video stream
           Product: GStreamer
           Version: 0.10.14
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-ffmpeg
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: wouter at mind.be
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Debian unstable packages, relevant package versions:
gstreamer0.10-ffmpeg       0.10.2-3   FFmpeg plugin for GStreamer
gstreamer0.10-gnomevfs     0.10.14-2  GStreamer plugin for GnomeVFS
gstreamer0.10-plugins-bad  0.10.5-2   GStreamer plugins from the "bad" set
gstreamer0.10-plugins-base 0.10.14-2  GStreamer plugins from the "base" set
gstreamer0.10-plugins-good 0.10.6-2   GStreamer plugins from the "good" set
gstreamer0.10-plugins-ugly 0.10.6-2   GStreamer plugins from the "ugly" set
gstreamer0.10-x            0.10.14-2  GStreamer plugins for X11 and Pango

I'm streaming MPEG-4 video from a Sony surveillance camera (SNC-DF50P).
In Mplayer, this plays perfectly. Here is some information:

MPEG4-ES file format detected.
(11:20:14) Zombie3: Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec
family
(11:20:14) Zombie3: INFO: libavcodec init OK!
(11:20:14) Zombie3: Selected video codec: [ffodivx] vfm:ffmpeg (FFmpeg MPEG-4)

Even with libavcodec debug messages enabled, no errors are reported in the
stream.


With GStreamer, the video plays horribly. The initial frame seems to only
decode the top few lines reasonably. After that, only chunky effects are drawn
where there is motion.

gst-launch gnomevfssrc location='http://10.10.1.203/mpeg4' ! typefind !
ffdec_mpeg4 ! ffmpegcolorspace ! xvimagesink

Errors like these are shown constantly:
0:00:02.382286000  5381 0x80749d0 WARN                ffmpeg
gstffmpegdec.c:1577:gst_ffmpegdec_frame:<ffdec_mpeg40> ffdec_mpeg4: decoding
error (len: -1, have_data: 0)
0:00:02.384020000  5381 0x80749d0 ERROR               ffmpeg :0:: cbpc damaged
at 12 14

0:00:02.384117000  5381 0x80749d0 ERROR               ffmpeg :0:: Error at MB:
586

0:00:02.440572000  5381 0x80749d0 ERROR               ffmpeg :0:: cbpc damaged
at 23 5

0:00:02.472886000  5381 0x80749d0 ERROR               ffmpeg :0:: Error at MB:
228

0:00:02.557964000  5381 0x80749d0 ERROR               ffmpeg :0:: header
damaged

0:00:02.558157000  5381 0x80749d0 WARN                ffmpeg
gstffmpegdec.c:1577:gst_ffmpegdec_frame:<ffdec_mpeg40> ffdec_mpeg4: decoding
error (len: -1, have_data: 0)
0:00:02.559959000  5381 0x80749d0 ERROR               ffmpeg :0:: ac-tex
damaged at 5 14

0:00:02.560056000  5381 0x80749d0 ERROR               ffmpeg :0:: Error at MB:
579

I've captured about 500KiB of data and placed it in a file, which is available
at:
 http://users.telenet.be/eekzombie/cam.mp4


-- 
See http://bugzilla.gnome.org/page.cgi?id=email.html for more info about why you received
this email, why you can't respond via email, how to stop receiving
emails (or reduce the number you receive), and how to contact someone
if you are having problems with the system.

You can add comments to this bug at http://bugzilla.gnome.org/show_bug.cgi?id=476148.