[gstreamer-bugs] [Bug 323286] [ffdec_cinepak] chef.avi causes gstreamer to hang in preroll

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-ffmpeg | Ver: HEAD CVS

Tim-Philipp Müller changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|gst-plugins-ugly            |gst-ffmpeg
      everconfirmed|0                           |1
            Summary|chef.avi causes gstreamer to|[ffdec_cinepak] chef.avi
                   |hang in preroll             |causes gstreamer to hang in
                   |                            |preroll



------- Additional Comments From Tim-Philipp Müller  2005-12-05 19:25 -------
This is an AVI with cinepak video and raw int 8bpp mono audio.

The reason it doesn't preroll properly seems to be that ffdec_cinepak drops all
the frames it decodes because it is waiting for a keyframe that never comes.

The following fixes it sort of, but needs to be double-checked before being
applied (not tested against any other codecs yet, just wanted to report my
preliminary findings):

Index: gstffmpegdec.c
===================================================================
RCS file: /cvs/gstreamer/gst-ffmpeg/ext/ffmpeg/gstffmpegdec.c,v
retrieving revision 1.130
diff -u -p -r1.130 gstffmpegdec.c
--- gstffmpegdec.c      5 Dec 2005 13:04:39 -0000       1.130
+++ gstffmpegdec.c      5 Dec 2005 19:20:06 -0000
@@ -1100,7 +1100,7 @@ gst_ffmpegdec_sink_event (GstPad * pad,
           ffmpegdec->waiting_for_key = TRUE;
         }
       }
-      ffmpegdec->waiting_for_key = TRUE;
+      ffmpegdec->waiting_for_key = FALSE;
       ffmpegdec->synctime = ffmpegdec->next_ts;
       break;
     }

Audio/Video sync also doesn't seem to be quite right with this fix, but it's
really hard to tell anyway, so I'm not sure whether there's an issue or not.



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