Question / Help OBS Studio 0.14 NVENC not supporting lossless anymore

[Schauerland]

Hey,

first, thanks for the great work.

Is NVENC Lossless (high444) feature dropped?

Or will it come next update?

thx

 

[Gol D. Ace]

http://i.imgur.com/0U4x0BZ.png

 

[Klesk Reaver]

http://i.imgur.com/0U4x0BZ.png

Doesn't work, setting that mode and pressing "Start Recording" doesn't change it to "Stop Recording" and no file is output

on that note, If you want to use NVENC in 0.14.1 is it best to leave it in simple mode?

 

[Schauerland]

The image shows a file with 2500 kbits and the high444 profile. its not lossless.
Isnt there a way to set qp=0?

 

[Suslik V]

The image shows a file with 2500 kbits...

CBR - unchecked. All fine.

 

[R1CH]

How does 2500kbps VBR = lossless?

 

[Suslik V]

With ease - 320x240 pixels, nobody see the difference.

So... NVENC Lossless (high444) feature dropped? Yes or No? Point us, please.

 

[Schauerland]

i dont get it.
so, is lossless possible with nvenc or not?
i mean the eq to qp=0 on x264
thx

 

[Edgard Castro]

It seems that real NVENC lossless it's not supported on OBS yet, looking at the presets on the source, it's not adding the "lossless" and "losslesshp" options that ffmpeg offers for NVENC encoding.

https://github.com/jp9000/obs-studio/blob/master/plugins/obs-ffmpeg/obs-ffmpeg-nvenc.c#L343-L349

https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/nvenc.c#L637-L642

 

[NalaNosivad]

Lossless YUV444 NVENC support would be the absolute biggest thing for me, in all honesty.