Suggested stream settings

When you're setting up your live stream, you would typically consult your CDN or publishing destination for their recommended settings to use.

Stream setup can be a matter of balancing quality and system resources. When choosing your stream settings, it's important to consider the type of content you're streaming and the streaming protocol you've chosen.

For streaming fast moving video, a higher bitrate and frame rate delivers a better image. If you're streaming a slide presentation, you can save bandwidth and system processing by lowering the bitrate and frame rate without any noticeable image degradation.

The following table provides suggested settings to maximize your video quality while minimizing system resource usage when streaming video content from your Pearl-2.

Suggested stream settings for video

Option

Setting
Codec H.264
Video encoding preset Hardware accelerated
Video encoding profile High
Key frame interval 2 sec1
Limit frame rate 301
Bitrate

4 Mbps for HD; 6 Mbps for Full HD; 12 Mbps for 4K UHD4K

Audio format AAC 22 KHz1

1For HLS streaming, the key frame interval should be set to 2s and the frame rate should be set to 60 fps (or 59.94) for live NTSC content.

The following table provides suggested settings to maximize your stream quality while minimizing system resource usage when streaming a slide presentation from a PC, Mac, or tablet.

Suggested stream settings for slides

Option

Setting
Codec H.264
Video encoding preset Hardware accelerated
Video encoding profile High
Key frame interval 2 sec
Limit frame rate 30
Bitrate

4 Mbps for HD; 6 Mbps for Full HD; 12 Mbps for 4K UHD4K

Audio format AAC 44 KHz

We recommend the following frame rates (per stream):

  • 60 fps at 1920×1080 capturing and streaming 2 sources simultaneously
  • 30 fps at 1920×1080 capturing and streaming 6 sources simultaneously
  • 30 fps at 4K UHD2, capturing and streaming one source