[x265] [PATCH RFC] presets: adjust presets to increase spread and align closer with x264 presets

[Deepthi Nandakumar]

About the presets themselves,

1. Whats the tradeoff from increased lookaheadDepth? Should fast/medium
really use 30/40?
2. Can we remove atleast one of the "slow" presets? slower??
3. EnableTSkipFast=1 for all but placebo preset. could be disabled in all
medium and slow presets?




On Thu, Nov 7, 2013 at 3:37 PM, Deepthi Nandakumar <
deepthi at multicorewareinc.com> wrote:

> Since the default preset is medium, shouldnt x265_param_default apply
> medium settings only? So that the if (!strcmp(preset, "medium")) block here
> is empty??
> In that case, the preset (if specified) will change only the ones which
> are different from medium?
>
> Also, there are a few params here that
> 1. arent used and arent initialised properly (eg, constrainedIntra,
> weightedBipred)  lets remove them and add them back when the feature
> exists.
> 2. that are dependent on other param fields, like EnableRdo, EnabledRDOQ
> depends on RDLevel. This particular case is handled safely inside
> encoder::configure, but not sure about all such cases.
>
> Just thought this is a good time for springcleaning.
>
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