Open Broadcaster

• Open Broadcaster Software, now in version 30.2.3.
• Plugins
• Organizing Scenes
• obs-cmd

Audio Chain

Recorder Settings

Unfortunately, my only choice is:

• 44 kHz sampling rate
• 16 bit/sample

OBS Audio Filters

According to the-best-audio-filters-for-obs, order of the filters to use:

• Noise Suppression - I use good quality, more CPU usage option;
• Noise Gate - disabled it;
• 3-band Equalizer - High: 0dB, Mid: 0dB, Low: +3dB;
• Compressor - Ratio: 5:1, Threshold: -12.2dB, Atack: 2ms, Release: 70ms, Output gain: 0dB

Codec

libfdk-AAC is better than FFmpeg AAC.

Video Chain

Camera Settings

Sony a7iv….

• in the USB streaming mode does not support Pictire Profiles, so my choice of PP11/S-Cinetone had no effect.
• Creative Mode - I use Standard.

More: What is S-Cinetone, and How Do You Use It?

OBS Video Filters

For webcam:

• disable low light enhancement - removes ghosting effects

For Sony a7iv I use:

• color correction filter - Saturation: -0.20

Codec

Guides:

• Recording in OBS
• Streaming in OBS with Intel QSV NVENC
• NVIDIA NvEnc

The order of preference is unclear and is determined by the PC capabilities:

• NVENC, preset=P6:Slower (Better Quality)
• QuickSync
• x264
• FFmpeg VAAPI

NVENC

My steamer GPU, GeForce GT 1030, does NOT support NVENC.

QuickSync

For my streamer/recorder PC with UHD Graphics 730, QuickSync uses GPU for H.264 encoding and CPU for HEVC, hence recommended is QuickSync H.264:

GPU	UHD Graphics 730, 750, 770
Rate Control	CBR
Target Usage	TU1 or TU2
Profile	high
Latency	normal
B Frames	3

x264

Option	Lossless	Near Lossless	Indistinguishable	High Quality	Acceptable Quality
Rate Control	CRF
CRF	0	0…4	5…10	11…16	17…22
Keyframe Interval	1
x264 Options	bframes=0 keyint=1 min-keyint=1
OBS Color Format	4:4:4	4:4:4 or 4:2:2	4:4:4, 4:2:2 or 4:2:0

Common:

Option	Value
Preset	ultrafast - placebo, a slower preset only affects file size, quality should be unaffected.
Profile	High, required for 4:4:4 and 4:2:2 encoding
Tune	None, tuning can slightly improve compression efficiency, but often harms it instead.

Screen Capture

• Challenges in wayland

Notes:

• OBS crashes when I power down my Sony a7iv when the latter is connected to PC using USB cable.