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Live Video Recommended Encoder Settings

Live Event streaming requires the use of an RTMP encoder. If your upload bandwidth and encoder allows, we recommend using three bitrate levels to enable adaptive bitrate switching.

You can set up to three stream qualities for a Live Event. In this section, you’ll find the recommended encoder settings that will achieve the best performance depending on your upload bandwidth. (To see the supported encoder settings which meet the minimum requirements, go to Live Event Supported Encoder Settings.)

Only use up to half of your maximum upload bandwidth for all streams combined. If you go over half the maximum, buffering errors can occur. If you don’t know your maximum upload bandwidth you can run a speed test to determine the bandwidth available to you.

If you are on a shared connection, the upload speed available to you can change depending on who else is using the connection. It’s recommended to run a speed test as part of your pre-event test to ensure you have the correct bitrate configured on the encoder.

 

Multi-stream with 5 Mbps Upload Bandwidth

If your minimum upload bandwidth is 5 Mbps, use the recommended encoder settings in this section for the following source inputs:

 

Stream Settings for SD (720 × 480) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution 720 × 480 512 × 384 400 × 300
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 1.2 Mbps (1200 Kbps) 700 Kbps 300 Kbps
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264
Video Profile Main Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 96 Kbps 96 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)

Stream Settings for Anamorphic SD (720 × 486) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution 720 × 404 512 × 288 400 × 224
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 1.2 Mbps (1200 Kbps) 700 Kbps 300 Kbps
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264
Video Profile Main Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 96 Kbps 96 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)

Stream Settings for HD (1920 × 1080) or HD (1280 × 720) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution 1024 × 576 720 × 404 400 × 224
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 1.4 Mbps (1400 Kbps) 700 Kbps 300 Kbps
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264
Video Profile Main Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 96 Kbps 96 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)

 

Multi-stream with Over 10 Mbps Upload Bandwidth

If your minimum upload bandwidth is 10 Mbps, use the recommended encoder settings in this section for the following source inputs:

Stream Settings for SD (720 × 480) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution 720 × 480 512 × 384 400 × 300
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 2.0 Mbps (2000 Kbps) 1.4 Mbps (1400 Kbps) 400 Kbps
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264
Video Profile Main Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 96 Kbps 96 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)

Stream Settings for Anamorphic SD (720 × 486) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution 720 × 404 512 × 288 400 × 224
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 2.0 Mbps (2000 Kbps) 1.4 Mbps (1400 Kbps) 400 Kbps
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264
Video Profile Main Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 96 Kbps 96 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)

Stream Settings for HD (1920 × 1080) or HD (1280 × 720) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution  1280 × 720 720 × 404 400 × 224
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 2.5 Mbps (2500 Kbps) 1.6 Mbps (1600 Kbps) 400 Kbps
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264
Video Profile Main Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 96 Kbps 96 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)

 

Stream Settings for HD (1920 × 1080) or HD (1280 × 720) Source Input

First or Highest Quality Stream Second or Medium Quality Stream Third or Lowest Quality Stream
Resolution 1920 × 1080 1280 × 720 720 × 404
Frame Rate 29.970 FPS 29.970 FPS 29.970 FPS
Video Bitrate 3.5 Mbps (3500 Kbps) 2.5 Mbps (2500 Kbps) 1.6 Mbps (1600 Kbps)
Video Codec/Format H.264 (mandatory) H.264 (mandatory) H.264 (mandatory)
Video Profile High Main Main
Keyframe Interval 2 seconds 2 seconds 2 seconds
Level 4.2 4.2 4.2
Audio Bitrate 128 Kbps 128 Kbps 96 Kbps
Audio Codec/Format AAC (MP3 is also accepted) AAC (MP3 is also accepted) AAC (MP3 is also accepted)
Audio Sample Rate 44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)
44100 Hz (recommended)
48000 Hz (supported)