[Bug 98005] VCE dual instance encoding inconsistent since st/va: enable dual instances encode by sync surface

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98005

--- Comment #20 from Boyuan Zhang <boyuan.zhang at amd.com> ---
(In reply to Boyuan Zhang from comment #19)
> (In reply to Boyuan Zhang from comment #18)
> > (In reply to Andy Furniss from comment #14)
> > > but I am afraid the patches regress cbr so the out of order frames near I frames issue is back.
> > 
> > The "out of order" issue was caused by sending last p and next i frame
> > together for dual instance encoding, which has already been solved and
> > shouldn't affect by this patch. I suspect the i-frame has less QP (quality)
> > than p-frame in cbr case (to meet constant bit-rate) where bit-rate is not
> > high enough, as a result you might see low picture quality for each i-frame.
> > Please confirm with high bitrate or using analyser to check the order.
> > 
> > If you still see the out-of-order issue, please share the clip and command.
> > 
> > Thanks
> 
> Nevermind, the cbr issue was reproduced and fixed. Please try the latest
> patch I just send.

Links can be found below:
https://lists.freedesktop.org/archives/mesa-dev/2016-November/136065.html
https://lists.freedesktop.org/archives/mesa-dev/2016-November/136066.html

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