Routing for Video Devices

Video (Dante AV) devices support three major channel types.

Audio Channels

Audio channels are represented in Dante Controller by the following icon:

Audio channels for Dante video devices are treated and managed identically to audio channels for audio-only Dante devices.

Video Channels

Video channels are represented by the following icon:

Video channels contain packetised video data streams, and can be routed in the same way as audio channels. However, they typically use more bandwidth than audio channels, and require 1Gbps (or higher) switch ports.

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Note:  IGMP snooping must be enabled on network switches that will be carrying Dante video on 1Gbps network infrastructure. Refer to your switch manufacturer's documentation for information about enabling IGMP snooping.

Ancillary Channels

Ancillary channels are represented by the following icon:

Ancillary channels are 'custom' channels, defined by the device manufacturer, to carry additional data (not audio or video) between devices. Typically they are used to carry hardware control data, such as USB peripheral or infrared transport control data.

Ancillary channels are typically low bandwidth (compared to audio and video channels).

Some ancillary channel types cannot be added to multicast transmit flows.

A typical Network view for a network that includes video devices (with four types of ancillary channels) is shown below.

In this example:

  • The 'Video Rx' channel on the AV-Display-FOH receiver is subscribed to the 'Video Tx' channel on the AV-Mixer transmitter.

    This subscription would cause video from the AV mixer to be displayed on the front of house display screen.

  • The '01' and '02' audio channels on the Amp-FOH1 audio receiver are subscribed to the 'Left' and 'Right' Tx channels on the AV-Mixer transmitter.

    These subscriptions would cause the left and right audio channels from the AV mixer to be played out via the front of house amplifier.

  • The 'USB' and 'IR' ancillary channels on the AV-Display-FOH receiver are subscribed to the equivalent channels on the AV-Mixer transmitter.

    These subscriptions would enable USB peripheral (for example, mouse and keyboard) and infrared control of the transmitter via the control ports on the receiver.

    Note that control data on some types of ancillary channel (somewhat counter-intuitively) may actually flow from the receiver to the transmitter. This enables transmitting video sources to be controlled remotely at the receiver. For example, you could start and stop a Blu-Ray player (a transmitter) in another room using an infrared remote control pointed at the screen that is actually playing the video (a receiver).