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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - VCE dual instance encoding inconsistent since st/va: enable dual instances encode by sync surface"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98005#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - VCE dual instance encoding inconsistent since st/va: enable dual instances encode by sync surface"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98005">bug 98005</a>
from <span class="vcard"><a class="email" href="mailto:boyuan.zhang@amd.com" title="Boyuan Zhang <boyuan.zhang@amd.com>"> <span class="fn">Boyuan Zhang</span></a>
</span></b>
<pre>(In reply to Andy Furniss from <a href="show_bug.cgi?id=98005#c14">comment #14</a>)
<span class="quote">> but I am afraid the patches regress cbr so the out of order frames near I frames issue is back.</span >
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</pre>
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