QSVEnc icon indicating copy to clipboard operation
QSVEnc copied to clipboard
verified publisher icon rigaya

AVBR HEVC

Open mikk9 opened this issue 7 years ago • 4 comments

Can we get AVBR for HEVC? According to latest release notes it is supported.

HEVC encode limitations:

Supports only CQP, CBR, VBR, ICQ and AVBR rate control methods, as well as MFX_RATECONTROL_LA_EXT with lookahead plugin.

mikk9 avatar Nov 09 '18 17:11 mikk9

Whenever I set AVBR mode for HEVC, the driver returns incompatible parameter and changes mode to VBR (on Core i7 7700K).

Maybe supported on more new CPUs?

rigaya avatar Nov 11 '18 13:11 rigaya

I don't know, did you try the latest driver? Maybe it wasn't supported in earlier drivers.

https://downloadcenter.intel.com/download/28289

mikk9 avatar Nov 11 '18 15:11 mikk9

It's the latest driver (6373).

As I have written before, on my Kabylake system (i7 7700K) AVBR is not supported, but there is a chance that is supported on new gen CPUs.

Actually you can check it yourself by "--check-features", the result is built dynamically by asking the driver. If it says "o", then it is supported, otherwise it's not.

rigaya avatar Nov 12 '18 11:11 rigaya

It says not supported. This is odd when Intel says it is supported, I may ask them.

mikk9 avatar Dec 02 '18 18:12 mikk9