Chromecast Sender

Receiver App ID

Used by the "Open Cast Picker" to launch your receiver.

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Media Namespace

Namespace used for sender → receiver media messages (e.g. PLAY, PAUSE, SEEK).

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Custom Load Request

Compose and send a custom LOAD request to the receiver. History is stored locally.

Valid JSON

Tip: Use a recognizable media.contentId to find it in history.