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  2. WebRTC DAT

    WebRTC DAT

    Summary

    A WebRTC DAT represents a peer on one end of any number of WebRTC peer-to-peer connections.

    Each connection is represented in TouchDesigner by a generated UUID. The UUID must be passed to WebrtcDAT Class connection-level python methods.

    The WebRTC DAT output is a table formatted with a row per connection, with columns: id (ie. UUID), connection_state, signaling_state, ice_connection_state, and ice_gathering_state.

    The columns altogether describe the state of a connection and can also be useful for debugging. For example, if ice_connection_state failed then that means there's an issue pairing local and remote ICE candidates for streaming over the network. It could be that NAT traversal failed, and if using a STUN server that might indicate a need for a TURN server (see https://en.wikipedia.org/wiki/STUN#Limitations).

    WebRTC video and audio input/output is done via the Video Stream In TOP, Video Stream Out TOP, Audio Stream In CHOP, and Audio Stream Out CHOP.

    See also WebRTC.

    PythonIcon.pngwebrtcDAT_Class


    Parameters - Connection Page

    Active active - When active, can connect to peers and send media/data. When deactivated, all existing connections will be closed.

    Reset reset - Resets the peer associated with the DAT. Equivalent to deactivating then reactivating the active parameter.

    Custom Bit Rate Limits bitratelimits - When enabled, custom min/max bit rates can be specified. These max bit rate limits are expressed in kbps and apply to all tracks associated with the WebRTC DAT.

    Minimum Bit Rate (kbps) minbitrate - Minimum bit rate for all tracks associated with the WebRTC DAT.

    Maximum Bit Rate (kbps) maxbitrate - Maximum bit rate for all tracks associated with the WebRTC DAT.

    Callbacks DAT callbacks - Reference to a DAT containing WebRTC callbacks.


    Parameters - ICE Page

    STUN Server URL stun - URL of the STUN server. See WebRTC#ICE for more details regarding STUN.

    TURN Username username - Username for access to the specified TURN servers.

    TURN Password password - Password for access to the specified TURN servers.

    TURN Server turn - Sequence of TURN server urls.
    TURN Server URL 0 turn0server - URL of the TURN server. See WebRTC#ICE for more details regarding TURN.


    Parameters - Common Page

    Language language - ⊞ - Select how the DAT decides which script language to operate on.
    • Input input - The DAT uses the inputs script language.
    • Node node - The DAT uses it's own script language.

    Edit/View Extension extension - ⊞ - Select the file extension this DAT should expose to external editors.
    • dat dat - various common file extensions.
    • frag frag -
    • glsl glsl -
    • html html -
    • md md -
    • py py -
    • rtf rtf -
    • tsv tsv -
    • txt txt -
    • vert vert -
    • xml xml -
    • From Language languageext - pick extension from DATs script language.
    • Custom Extension customext - Specify a custom extension.

    Custom Extension customext - Specifiy the custom extension.

    Word Wrap wordwrap - ⊞ - Enable Word Wrap for Node Display.
    • Input input - The DAT uses the inputs setting.
    • On on - Turn on Word Wrap.
    • Off off - Turn off Word Wrap.

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