Live Encoder Configuration

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Introduction

To ensure your Dacast live stream is stable and fully functional, you MUST configure your encoder to use the settings defined on this page.

First, ensure you are following everything in the Common Settings section. Then select the most appropriate Resolution & Bitrate (depending on your needs) and configure all settings for that size exactly. Finally, be sure not to use any of the Unsupported Settings because they will very likely break your stream.

Common Settings

The following settings are required for live streaming with Dacast, regardless of your selected resolution and bitrate:

Video Codec H.264 (x264 may work)
Frame Rate 25 or 30
Keyframe Interval 2 secs (or 2x frame rate)
Scanning Progressive
Encoding Bitrate Constant (CBR)
Audio Codec AAC
Audio Bitrate 128 kbps
Audio Channels 2 (Stereo)
Audio Sample Rate 48 kHz (48,000 Hz)

Resolution & Bitrate Settings

Please select one of the following configurations and ensure you encoder is set up with these exact settings to help prevent streaming issues:

ULD LD SD HD FHD
Name Ultra-Low Definition Low Definition Standard Definition High Definition Full High Definition
Video Bitrate (kbps) 350 350 – 800 800 – 1200 1200 – 1900 1900 – 4500
Resolution Width (px) 426 640 854 1280 1920
Resolution Height (px) 240 360 480 720 1080
H.264 Profile Main Main High High High

Unsupported Settings

Note that the following settings are unsupported and will break your stream:

  • Baseline H.264 Profile
  • Interlaced Scanning

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