[Bug 657079] JPEG RTP Payloader Change to support FaceVsion Webcams

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=657079
  GStreamer | gst-plugins-good | 0.10.x

--- Comment #5 from Robert Krakora <rob.krakora at messagenetsystems.com> 2011-08-27 17:37:34 UTC ---
(In reply to comment #4)
> I suppose technically a JPEG image with no actual data would be valid, but that
> doesn't seem very useful.
> 
> What happens when you use jpegparse before the payloader?  (Without the patch,
> obviously.)

Hi David,

I tried placing jpegparse before the payloader without the patch and it really
had no affect.  This occurs with the Logitech B990 and the FaceVsion E1
webcams.  There are SOI without EOI and then and EOI every nth SOI.  I am a
MPEG2 transport/MPEG4 container guy, I don't have a lot of experience with
Motion JPEG.  However, with this change I do not see the payloader throwing an
error any more and halting the pipeline.  This also occurred with a beta
version of a Creative webcam that I was testing as well.  All three cameras
also support H.264 but not multiplexed with Motion JPEG as proposed in the
specification that Logitech co-authored and presented to USB-IF.

Best Regards,

Rob

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