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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 426x240 512 Kbps
360p Main 640x360 1024 Kbps
480p Main 854x480 1600 Kbps
720p Main 1280x720 2640 Kbps
1080p Main 1920x1080 4400 Kbps
4K High 3840x2160 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