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Recommended stream settings

Determining the optimal stream settings to use to deliver video is difficult even if you’ve been
streaming for years.

 

Here are the settings that we recommend:


– Video codec: H.264
– Frame rate: 25 fps
– Keyframe frequency: 1 second
– Audio codec: AAC
– Audio bitrate: 128 Kbps, stereo
– Audio sample rate: 48000 Гц

 

Recommended video stream parameters:

 

Profile Resolution Bitrate
240p Baseline 426×240 512 Kbps
360p Main 640×360 1024 Kbps
480p Main 854×480 1600 Kbps
720p Main 1280×720 2640 Kbps
1080p Main 1920×1080 4400 Kbps
4K High 3840×2160 12000 Kbps

 

 

 

To manually calculate the optimal bitrate, you can use the following formula:

bitrate = (resolution * frames per second * BPP) / 1000

where BPP (Bits per pixel) – average amount of bits applied to each pixel of a video.

BPP typically ranges from 0.05 to 0.150, depending on the amount of motion in the scene. The
more motion there is, the higher the BPP should be.

 

BPP examples:

 

– quiet video: BPP = 0.05

– average dynamic video: BPP = 0.08

– sports broadcast: BPP = 0.13

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