[x264-devel] Default value for the --scenecut option causes heavy undesirable flood of I slices in active scenes

[Jason Garrett-Glaser]

On Sun, Nov 2, 2008 at 1:48 AM, Vladimir Chernyshov <vchernys at welho.com> wrote:
> I tried --pre-cut. It worked only marginally better. It still inserted
> few extra scene cuts through the scene, and has suppressed all B-frames,
> which are highly desirable in the highly-active scene to keep bitrate down.

How does it "keep bitrate down" to use B-frames when they are
counterproductive?  Given the percentage of I-blocks in the scene, I
severely doubt that the B-frames are "highly desirable", considering
the enormous size of the coding prefix used for I-blocks, especially
when using CAVLC.

Dark Shikari