[x265] Slice decision

[Rainer]

Hello everyone,

I'm new to this list and very interested in the "Slice decision options"
of x265. The tests done so far show an expected behaviour of..

--open-gop
which is enabled by default.

--keyint
Setting this to a very high value, one which is higher than the duration
of the longest shot, works fine. 

I run into problems by setting up the parameters to find all slices from
my reference (ground truth containing any flavour of slice one can
imagine:). Increasing "--scenecut" beyond the default of 40 brought no
significant gain of more detected slices. Also increasing
"--scenecut-bias" (as I understood correctly) wasn't of that big impact
in the tests I've done so far. 

Are there some dependencies between parameters which are not that
obvious here, at least to me? I also tried other parameters with no big
impact.
I hoped to get a feeling how the parameters work in concert, but the
"aggressive" placement of slices by changing "--scenecut" values could
not be reproduced here. Am I doing anything wrong? 

AIM:
- individual slice detection by threshold, not interval
- detect more false positives, than less 

CSV:
- the csv log is used for comparing/counting the slices 

Any help, hint and reply on this is much appreciated.
I use a MSVC build for Win-x64 found here http://x265.ru/en/builds/ on a
YUV input clip. 

Best regards,
Rainer

--
Rainer M. Engel, Dipl. Digital Artist
Berlin, Germany
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