If you have any questions, please feel free to ask
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 Hz
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
