[x265] [PATCH 1 of 2] slicetype: Modify Scenecut algorithm to detect scene transition points

[Xinyue Lu]

Hi,

After this patch, x265 seems to always produce constant length gop,
where length is max keyint, completely ignoring scene cuts.

For example, having --keyint 360 will produce a stream where IDR is
inserted at 0, 360, 720, 1080, 1440, 1800, ... all the way to the last
frame.

I back out the related patches (rev 10912, 10923, 11005) and it's back
to normal.

Can you reproduce this behavior? Is it a feature or a bug?

I've also left a post in doom9 thread.

Thanks

On Mon, Aug 17, 2015 at 1:41 AM,  <aarthi at multicorewareinc.com> wrote:
> # HG changeset patch
> # User Aarthi Thirumalai
> # Date 1437505166 -19800
> #      Wed Jul 22 00:29:26 2015 +0530
> # Node ID 51320561d41f32faa75dd3d04d88ea68500ce995
> # Parent  d56b2466c04459205287e1581d8a36eebf372ba6
> slicetype: Modify Scenecut algorithm to detect scene transition points
> to improve Rate Control (refs #160).
>
> identify scene trasitions, fade-ins, fadeouts, sceneCuts and signal the flag bSceneCut
> in Lowres structure. This flag will be used by RateControl to adjust the wps during scene cuts.
>