[Bug 764607] Motion JPEG (MJPEG) Fails to Play

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=764607

--- Comment #9 from sreerenj <bsreerenj at gmail.com> ---
(In reply to Víctor Manuel Jáquez Leal from comment #7)
> (In reply to Víctor Manuel Jáquez Leal from comment #6)
> > Created attachment 325551 [details] [review] [review]
> > image: hack: handle IMC3 format as YV12
> > 
> > Intel driver internally uses IMC3 format for JPEG decoding. This patch add a
> > hackish support to IMC3 as a YV12 to avoid color conversions if it can be
> > negotiated.
> > 
> > http://www.fourcc.org/yuv.php#IMC3wq
> 
> I'm not sure of this patch. As I said, it is a hack. But I posted for
> discussion.

I didn't know that driver is selecting any format other than nv12/yv12/p010 for
decoding! 

Yup, we should think about this. Driver set the flags in such a way that, IMC3
can be used in vaCreateSurface() but not for vaCreateImage, interesting :)

May be we can stick on with "hidden" color-space conversion for all formats
other than NV12/YV12/I420/P010 from vaapidecode for better backward
compatibility .

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