Set the YouTube-facing title and description in Castr when you connect YouTube through its API, or edit them in YouTube Studio if you connect with a manual stream key. Add or change the thumbnail in YouTube’s scheduled-stream workflow or stream settings—not in Castr’s destination form. A Castr project name is separate from the title viewers see on YouTube.
Choose how Castr connects to YouTube
Castr documents two ways to add YouTube as a destination: authorize through YouTube Events, or enter YouTube’s streaming server and stream key manually. The route you choose affects where you manage metadata.
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API connection
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In Castr, create or open a live-stream project and add YouTube as a destination.
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Choose the YouTube Events/API connection option and authorize the YouTube account or channel when prompted.
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Select the event, enter the title and description, then create the YouTube platform. These are the YouTube-facing metadata fields; changing the Castr project name alone does not necessarily change the YouTube title.
Manual stream-key connection
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In YouTube Studio, open the scheduled stream or create one, then retrieve its stream key and streaming server details.
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In Castr, add YouTube as a destination and enter the server and key. Treat the key as a password: YouTube describes it as the stream’s “password and address.” Do not share it publicly.
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Edit the stream’s title and description in YouTube Studio. Castr’s guide directs users on the manual-key route to YouTube’s dashboard for description changes.
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Add or change the thumbnail in YouTube
Use YouTube Studio’s scheduled-stream or live-stream management workflow for the thumbnail. Google’s live-production guidance places custom-thumbnail setup in the process of scheduling a stream; YouTube Help also describes editing stream settings through Live Control Room.
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Open YouTube Studio and go to the scheduled stream or stream you need to manage.
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Open the stream’s settings or editing controls in the Live Control Room.
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Set or replace the custom thumbnail in YouTube’s scheduling/stream-management workflow, then save the change.
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The exact labels and available controls can vary with interface updates, account, or locale. Castr’s documented YouTube destination form does not show a thumbnail-upload control, so do not expect to set the thumbnail there.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Updating metadata after setup
Castr documents a social metadata API endpoint for changing title and description on YouTube destinations connected through the Castr dashboard using the YouTube API. The documented fields do not include a thumbnail update. For a thumbnail change, use YouTube Studio’s stream-management workflow.
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