NDI input
  • 09 Sep 2024
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NDI input

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Article summary

Network inputs/NDI input

Network Device Interface (NDI) is a royalty-free software standard developed by NewTek to enable video-compatible products to communicate, deliver, and receive high-definition video over a computer network in a high-quality, low-latency manner that is frame accurate and suitable for switching in a live production environment.

NDI is designed to run over gigabit Ethernet, with the NDI codec expected to deliver 1080p HD video at VBR data rates typically around 100 Mbit/s.

Composer supports NDI sources via the NDI input and can render NDI output via the NDI Target component.

When Composer is launched, the built-in NDI discovery service searches for NDI sources. As sources are being discovered, they are added to the Source dropdown.

  • Available NDI Sources - List of NDI sources
  • Selected Source - The selected NDI source
  • PlaybackState - Connection status
  • Commands:
    • Start NDI receiver - starts the NDI capture
    • Stop NDI receiver - stops the NDI capture
  • Configuration:
    • Automatic reconnect after lost connection - if this option is active, a lost NDI connection will be reconnected when the NDI source reappears on the network.
    • Ignore hostname when reconnecting - This will ignore the hostname of the NDI source and only use the name when connecting to the source
    • Log error on lost connection - Make log entry in Composer log if the connection is lost.
    • Prefered bandwidth - Select prefered received NDI bandwidth (quality)
  • Performance and properties
    • Discovery status - discovery connection status message. When trying to reconnect to a previously connected NDI source, the status changes to Searching.
    • Last Running Source - The last NDI source used
    • Received Video pixel format - internal videoformat
    • Received Video Frames - total number of captured video frames
    • Received Audio Frames - total number of captured video frames
    • Video Queue Size - number of captured but unprocessed video frames
    • Audio Queue Size (ms) - duration of captured but unprocessed audio
  • Optional TAGS (space separated)
    • TAGS - Add a "tag"  that can be used in the input smart search function. It is possible to add several tags by separating them by a SPACE char.
  • Resolution:
    • Width - NDI source video width (pixels)
    • Height - NDI source video height (pixels)

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