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Defines additional sources of audio and video which will be sent by this TRVCamSender component.

property ExtraMediaSources: TRVMediaSourceCollection;

TRVCamSender component may send data organized in multiple media channels.

Audio and video for the default (0th) channel are defined in its properties VideoSource, AudioSource (and SourceGUID, SourceVideoIndex, SourceAudioIndex).

Audio and video for the 1st, 2nd channels and so on are defined in properties of items in its ExtraMediaSource collection property:

ExtraMediaSource[0] defines the 1st channel,

ExtraMediaSource[1] defines the 2nd channel,

and so on.

The type of items of this collection is TRVMediaSourceItem.