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Live encoder settings, bitrates, and resolutions

It's important to make sure your live stream is high quality. Make sure you choose a quality that will result in a reliable stream based on your Internet connection.

If you're using Stream now, you do not need to set a bitrate. Stream now will automatically detect your encoder settings.

When you use Live Events you'll choose the quality of your stream. YouTube will automatically create all of the lower qualities.

Make sure to test before you start your live stream. Tests should include audio and movement in the video similar to what you'll be doing in the stream. During the event, monitor the stream health and review messages.

Note: For 4K / 2160, optimize for low latency is not available. All streams will be optimized for less viewer buffering.

4K / 2160p @60fps

  • When you schedule Events, make sure to check the 60fps box in the Ingestion Settings tab. Stream now will auto-detect the frame rate and resolution.
  • Resolution:  3840x2160p
  • Video Bitrate Range:  20,000 - 51,000 Kbps

4k / 2160p @30fps

  • Resolution: 3840x2160p
  • Video Bitrate Range: 13,000 - 34,000 Kbps
1440p @60fps
  • When you schedule Events, make sure to check the 60fps box in the Ingestion Settings tab. Stream now will auto-detect the frame rate and resolution.
  • Resolution: 2560x1440
  • Video Bitrate Range: 9,000 - 18,000 Kbps
1440p @30fps
  • Resolution: 2560x1440
  • Video Bitrate Range: 6,000 - 13,000 Kbps
1080p @60fps
  • When you schedule Events, make sure to check the 60fps box in the Ingestion Settings tab. Stream now will auto-detect the frame rate and resolution.
  • Resolution: 1920x1080
  • Video Bitrate Range: 4,500 - 9,000 Kbps
1080p
  • Resolution: 1920x1080
  • Video Bitrate Range: 3,000 - 6,000 Kbps
720p @60fps
  • When you schedule Events, make sure to check the 60fps box in the Ingestion Settings tab. Stream now will auto-detect the frame rate and resolution.
  • Resolution: 1280x720
  • Video Bitrate Range: 2,250 - 6,000 Kbps
720p
  • Resolution: 1280x720
  • Video Bitrate Range: 1,500 - 4,000 Kbps
480p
  • Resolution: 854x480
  • Video Bitrate Range: 500 - 2,000 Kbps
360p
  • Resolution: 640x360
  • Video Bitrate Range: 400 - 1,000 Kbps
240p
  • Resolution: 426x240
  • Video Bitrate Range: 300 - 700 Kbps
     

Encoder settings

Protocol: RTMP Flash Streaming
Video codec: H.264, 4.1
Frame rate: up to 60 fps
Keyframe frequency:

Recommended 2 seconds

do not exceed 4 seconds

Audio codec: AAC or MP3
Bitrate encoding: CBR
 

Recommended advanced settings

Pixel aspect ratio: Square
Frame types: Progressive Scan, 2 B-Frames, 1 Reference Frame
Entropy coding: CABAC
Audio sample rate: 44.1 KHz
Audio bitrate: 128 Kbps stereo
 
HTML5 streaming:  Many browsers support HTML5 and either the H.264 video codec or WebM format.
Live events are automatically available on iOS, Android 4.0+, game console devices and mobile devices via the YouTube app and m.youtube.com.
Looking for the 360 live streaming spec. Click here.

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