Good x264 settings (May 2020 update 2)

On obs studio u have to choose a filter, even if i'm not downscale/upscale. Then maybe i selected it but not using it at all? I heard lanczos not much better

Yes I have the same resolution on both then should be fine. Anyway twitch support (officially) only 25,30,50 and 60 fps. But i think i can try 57 anyway. A lot of people streaming in 900p or even in 936p, then i think i can do everything.

Zitat von iAvoe

speed improvement, I've fixed an error on merange, tuned some other parameters, and added more presets

Dear iAvoe, hello,

just found that thread, was googling for about a week trying to figure out the best settings.

May I kindly ask you to assist me also?

Having a hard times streaming Division 2 to youtube on hi-end PC.

NVENC just gives me pixeled frame - horrible - tried with max setting both highest preset (max) quality and low-latency quality presets...

now x264 is better, but still somehow soapy in general (when moving, standing still picture is perfect)

Division 2 has tons and tons of post processing particles crazy amounts volumetric fog and of vegetation everywhere

PC specs:

Ryzen 9 3950x
64gigs of 3600 RAM

2x2K IPS color calibrated monitors with 120Hz Gsync enabled

2xRTX3070 (tried to dedicate second single GPU for NVENC - does nothing in terms of quality)

Internet connection 500Mbps symmetric (having a consistent 50Mbps egress stream is absolutely not an issue, unless streaming service supports that)

Division 2 game settings:

FPS limit 60

Vsync ON

2k resolution

full screen

(game capture window scaled down manually to fit FHD OBS scene canvas size)

OBS settings (latest ver as of feb 2021)

Video:

resolution FHD

FPS 57

Advanced:

DX11

Color NV12

Color Space 709

Color Range Full

TCP pacing enabled

Network optimization enabled

Output:
x264 codec
VBR

bitrate 9000

Buffer 3500

CRF 20

Keyframes 2

CPU preset faster

Profile none

Tune none

options:

me=umh subme=10 chroma_me=0 bframes=5 b-adapt=1 ref=3 aq-mode=0 aq-strength=1.1 deblock=0:0 trellis=2 direct=temporal cabac=1 me_range=14 nr=25 mbtree=0 no-fast-pskip=1

That's the custom options I've ended up with after reading this thread,

could you kindly review that and advise?

I have also tried crazy bitrates like 45K on NVENC youtube gets that but it doesn't improve visual quality whatsoever.
Funny thing as if i just record the video locally with the very same encoding settings the quality is very acceptable playing it locally, but watching the stream in real time it's very pixilated and blured, lots lots worse than local recording quality... Not sure what is my issue... there are no network congestion or dropped frames due to network (in OBS status) and light is always green...

Streaming to twitch with the same settings is a LOT better in terms of quality... may be I'm doing something wrong with youtube? Still maybe it's possible to get better encoding quality with my specs...


Thanks in advance,
Vladimir

Hello!

I am planning to encode x264.

My basic settings

NVIDIA Geforce gtx 1060

Format profile : High@L4.1

480p - 1080p

The output file must be compatible with modern media players, such as Dune HD.

Container: mp4, mkv

Strategy - Constant quantizer

Quantizer - 16

Max GOP size - 250

Please help with a few questions:

1. Where I can see in the encoded log file SSIM and PSNR values?

2. How I can set vbv-maxrate?

3. Which values I should put in the

QP value for I, P, B-frames?

They are unchecked by default. With these settings

the encoded file is very large and has a very high bitrate.