No 12bit conversion in Nvenc h265 settings

[Peter82kr]

I have no option like in topic name.I have rtx 2060 which supports 12bit video encoding using Nvenc. Why this setting is not available?How i can enable 12bit color?
Thanks for answer.

PS:Im using latest version of hybrid.2019.05.05.1
PPS: Do the 12bit with chroma 444 will be possible in hybrid?
PPPS: Now i see that is possible in x265 do the same will be possible in nvenc or nvenc ffmpeg?Here is writen that some dll file is needed for 12bit ffmpeg conversion http://forum.doom9.org/archive/index.php/t-175730.html . So maybe it will be possible with nvenc ffmpeg?

[Selur]

What output do you get when you call:

"PATH TO Hybrid\64bit\NVEncC.exe" --check-features

because as far as I know NVEncC does not support 12bit encoding.
Using NVEnc with 4:4:4 and 12bit will be possible in Hybrid as soon as NVEncC supports it.
-> you best post over at https://github.com/rigaya/NVEnc/issues for this

Here is writen that some dll file is needed for 12bit ffmpeg conversion http://forum.doom9.org/archive/index.php/t-175730.html .

That is only for x265, as far as I know ffmpeg also doesn't support 12bit encoding through nvenc atm.

Cu Selur

[Peter82kr]

Codec: H.265/HEVC
Max Bframes               5
RC Modes                  63
Field Encoding            no
MonoChrome                no
Quater-Pel MV             yes
B Direct Mode             no
Max Temporal Layers       0
Hierarchial P Frames      no
Hierarchial B Frames      no
Max Level                 62
Min Level                 1
4:4:4                     yes
Max Width                 8192
Max Height                8192
Dynamic Resolution Change yes
Dynamic Bitrate Change    yes
Forced constant QP        yes
Dynamic RC Mode Change    no
Subframe Readback         yes
Constrained Encoding      no
Intra Refresh             yes
Custom VBV Bufsize        yes
Dynamic Slice Mode        yes
Ref Pic Invalidiation     yes
PreProcess                no
Async Encoding            yes
Max MBs                   262144
Lossless                  yes
SAO                       yes
Me Only Mode              yes
Lookahead                 yes
AQ (temporal)             yes
Weighted Prediction       yes
Max LTR Frames            7
10bit depth               yes

Seems only 10 bit support.

I added Feature request on riggaya github.

PS: Look at attachment.
Media info reports 8 bit depth after conversion but video is bigger than 10 bit.

Video
ID                          : 1
Format                      : HEVC
Format/Info                 : High Efficiency Video Coding
Format profile              : Main@L5.2@Main
Codec ID                    : hvc1
Codec ID/Info               : High Efficiency Video Coding
Duration                    : 55 min 45 s
Bit rate                    : 2 011 kb/s
Width                       : 1 920 pixels
Height                      : 1 080 pixels
Display aspect ratio        : 16:9
Frame rate mode             : Constant
Frame rate                  : 23.976 (24000/1001) FPS
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 8 bits
Scan type                   : Progressive
Bits/(Pixel*Frame)          : 0.040
Stream size                 : 802 MiB (98%)
Encoded date                : UTC 2019-04-15 11:19:14
Tagged date                 : UTC 2019-04-15 11:19:14
Menus                       : 3
Codec configuration box     : hvcC

Why its named 12bit when mediainfo sees 8 bit?

[Selur]

a. No clue about the tool you used, but normally you would need to used Main12 as profile to use 12bit encoding.
b. Could be a bug in MediaInfo.

[Peter82kr]

Hi Selur.

Please look at this: https://github.com/rigaya/NVEnc/issues/123

[Selur]

Problem is atm. Hybrid can't tell that the card supports 12bit.
-> posted to the issue thread over at the git

[Peter82kr]

Ok.Thanks.Now i just wait for rigaya moove.

[Selur]

-> 12bit is only supported for decoding not encoding by NVEnc

[Peter82kr]

Ok.Thanks for info.