[FFmpeg-devel] avcodec/proresenc_aw improvements

[Carl Eugen Hoyos]

2018-07-21 14:33 GMT+02:00, Martin Vignali <martin.vignali at gmail.com>:
> Patch in attach improve some part of the prores_aw encoder.
>
> 001 : use scantable in prores_data instead of a duplicate one.
> 002 : use for the frame header, primaries, transfert, colorspace like in
> proresenc_ks avoid color shift on some software (update fate test)
> 003 : change qp start value for each profile based on official encoder
> output and update proxy qp end to a bigger value (also based on
> official encoder output)
> (update fate test)
> 004 : calculate dct part before the quantif search. Avoid to recalculate
> it each time
> On a basic test Prores decoding -> prores encoding, the global speed
> improvment is around 2%

Am I correct that the output files also change?
What about PSNR or SSIM or visual quality?
The reason I ask is that iirc, PSNR was a little worse with ks.

Carl Eugen