[x265] [PATCH] Fix VBV macroblocking that comes up with the last Intra frame

[Aruna Matheswaran]

Thanks! Pushed into Release_3.1 and grafted it to Release_3.2 and default.

On Thu, Dec 26, 2019 at 9:08 AM <kirithika at multicorewareinc.com> wrote:

> # HG changeset patch
> # User Kirithika <kirithika at multicorewareinc.com>
> # Date 1577092232 -19800
> #      Mon Dec 23 14:40:32 2019 +0530
> # Node ID 09a92be151a276aec54f402456ca97576f5cfef3
> # Parent  a8a2c4c37267305d1a6b828ad06f83b5c9c81d00
> Fix VBV macroblocking that comes up with the last Intra frame
>
> This patch enables the VBV Lookahead computation of an I Slice to consider
> the
> last MiniGop frames available in the lookahead,hence fixing the VBV
> macroblocking
> issue that comes due to lack of frames in the Lookahead at the end of the
> video.
>
> diff -r a8a2c4c37267 -r 09a92be151a2 source/encoder/slicetype.cpp
> --- a/source/encoder/slicetype.cpp      Tue Dec 10 17:37:23 2019 +0530
> +++ b/source/encoder/slicetype.cpp      Mon Dec 23 14:40:32 2019 +0530
> @@ -1775,7 +1775,7 @@
>      if (m_param->bBPyramid && curNonB - prevNonB > 1)
>          curBRef = (prevNonB + curNonB + 1) / 2;
>      int miniGopEnd = keyframe ? prevNonB : curNonB;
> -    while (curNonB < numFrames + !keyframe)
> +    while (curNonB <= numFrames)
>      {
>          /* P/I cost: This shouldn't include the cost of nextNonB */
>          if (nextNonB != curNonB)
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>


-- 
Regards,
*Aruna Matheswaran,*
Video Codec Engineer,
Media & AI analytics BU,
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