docs contradiction presets vs fast-intra

[Former user]

Hi,

http://x265.readthedocs.io/en/default/cli.html fast-intra: Only applicable for --rd levels 4 and below (medium preset and faster).

preset-table: http://x265.readthedocs.io/en/default/presets.html in the table fast-intra is 0 (which should be disabled or --no-fast-intra) with medium and 1 (enabled) with fast

so, which is it?

best,

Eliot

[Mahesh Pittala]

fast-intra enabled at rd level 2 - ultrafast, superfast, veryfast, faster, fast presets

and disabled at rd levels 3, 4 - medium, slow presets but can enable as per doc.

and will not be useful at rd level > 4 - slower, veryslow, placebo presets

[Deepthi Nandakumar]

What the documentation says is, fast-intra can be enabled only at rd-level 4 or smaller - it doesnt need to be. It cannot be enabled/ineffective for rdlevels > 4.