[gstreamer-bugs] [Bug 568689] SIGEV using ffenc_wmav2

[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=568689

  GStreamer | gst-ffmpeg | Ver: 0.10.22




------- Comment #4 from Mark Nauwelaerts  2009-02-02 21:02 UTC -------
[Yes, I tested with those files, but what's in a name, etc ]

It is an ffmpeg bug.  More specifically, the bitstream writing that is done in
ffmpeg's bitstream.h (used by wmaenc a.o.) performs no buffer overflow checking
whatsoever.  wmaenc basically varies some parameter(s) trying to squeeze the
result into the buffer (too bad if it overruns in the process), and only checks
that the last attempt actually fits.

It happens to work in the ffmpeg binary because the buffer size used there is a
lot bigger than typically used in ffenc_... (though big enough for most
material).


-- 
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=568689.