Quicksync async depth 1080p#

Sometimes I might lower the cqp i,p,b settings to 35 or 34 if I want a little more quality, but I have found these settings give excellent quality with very reasonable file sizes.Īpparently, with Tiger Lake CPU, you can also use b-frames and b-pyramid with CQP fixed-function mode to get even better quality at the same file size (or same quality at lower file sizes). avhw -codec hevc -quality best -profile main10 -open-gop -async-depth 4 -fixed-func -cqp 36:36:36 -qp-offset 2:6:8 -output-res 1920x1080 I use the following settings (using QSV hardware as decoder gives a big speed boost and also keeps CPU usage low):. Differences are non-existent during normal viewing.Ĥ. To me, this is very acceptable - for example a CQP 2.2gb file vs 2gb file with x265 etc. The CQP encodes are usually 5-15% bigger. I generally compare file sizes with the CQP fixed-function method to x265 10-bit CRF 24 encodes. CQP fixed-function file sizes are very reasonable. If downscaling to 720p, the speeds can get up to 600fps!!ģ.

Quicksync async depth 1080p#

There may be the odd frame here and there where there may be very slight differences in the really fine facial details, but these are few and far between and to my eyes, the differences are difficult to spot and are completely unnoticeable during normal viewing.Ģ.This method is also very fast - I normally get from 240fps to 340fps (source material dependent) when re-encoding to 1080p from blu ray source.

The quality I get with this method is very close to the original. 'Fixed-function' CQP encode using HEVC 10-bit is superb. I've re-encoded quite a few of my blu rays (ripping with MakeMKV), and here are my observations.ġ. I have been using an Ice Lake laptop (i7-1065G7) for about a year now and wanted to provide an update. Not specifically StaxRip related, but I do use StaxRip for encoding using Intel's QuickSync.