How to translate into x265 ?

[PatchWorKs]

Bump.

I'm addressing the topic for a bit different goal: lossless-like quality re-encoding of pre-processed avi/vapour-synth AVC (8bits / 1080i50 @ 17Mbps) video footage into HEVC (10bits / 1080p50) for NLE input.

I'm testing this LLMs-refined QSVEnc commandline:

QSVEncC64.exe --avsdll <AviSynth.dll path> --qvbr 20000 --codec hevc --quality best --output-depth 10 --qvbr-quality 14 --ctu 64 --ref 3 --gop-len 25 --i-adapt --weightp --hyper-mode adaptive --input-buf 32 --output-thread 1 --async-depth 4 --videoformat pal --colormatrix bt709 --colorprim bt709 --transfer bt709 --atc-sei bt709 --aud --function-mode auto --scenario-info archive --gpu-copy --repeat-headers -i INPUT.vpy -o OUTPUT.hevc

How to translate into x265 ?
Are there any other parameters/settings I can exploit to further "squeeze" the encoding quality while keeping the encoded file suitable for NLE editing (= easily decodable/seekable) ?

Thanks in advance to anyone that can/will help.

[excellentswordfight]

Bump.

I'm addressing the topic for a bit different goal: lossless-like quality re-encoding of pre-processed avi/vapour-synth AVC (8bits / 1080i50 @ 17Mbps) video footage into HEVC (10bits / 1080p50) for NLE input.

I'm testing this LLMs-refined QSVEnc commandline:

How to translate into x265 ?
Are there any other parameters/settings I can exploit to further "squeeze" the encoding quality while keeping the encoded file suitable for NLE editing (= easily decodable/seekable) ?

Thanks in advance to anyone that can/will help.
I dont see how this is relevant to this thread at all, this should really be posted as its own thread.

With that said, I think you might be approaching this the wrong way. First of all i assume that you want reasonable speed, and in general speed and visually lossless is not a combination that x265 excels at. Also, there are a lot of digital intermediate formats that are designed for NLE editing that is visually lossless that would seem more suitable then HEVC GOP encode.

And again, with that said, you can look at what the GOP flavors of something like XAVC is using and do something similar, i,e. a short closed GOP with fixed frame structure and propper vbv-limits.

[Swede]

Moved to a new thread. Pls don't hijack old threads.

[PatchWorKs]

OK, seems that stay in AVC (XAVC looks interesting but not pratically usable) is better for the scope.