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Set the YouTube-facing title and description in Castr when you connect through YouTube Events/API, or edit them in YouTube Studio if you connect with a manual stream key. Add the thumbnail in YouTube’s scheduling or live-stream management workflow—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 matters because it determines where you manage metadata.

Connection method Title and description Thumbnail
YouTube Events/API Choose the event and enter the title and description in Castr when creating the platform. Castr also documents an API for updating those fields on API-linked YouTube destinations. Set or change it in YouTube’s scheduling or stream-management workflow; the Castr destination form does not document a thumbnail control.
Manual server and stream key Castr directs users to edit the description in YouTube’s dashboard. Manage YouTube-facing metadata there rather than assuming the Castr project name controls it. Set or change it in YouTube’s scheduling or stream-management workflow.

See Castr’s YouTube connection guide for its documented connection options. YouTube describes a stream key as “like your YouTube stream’s password and address”; keep it private and do not share it. Refer to YouTube’s live stream settings guidance for current controls. Labels and paths can vary with interface updates, account settings, or locale.

Add the YouTube title and description

If you connect through YouTube Events/API

  1. In Castr, create or open a live-stream project and add YouTube as a destination.
  2. Choose the YouTube Events/API connection and authorize the YouTube account if prompted.
  3. Select the channel or event Castr should use.
  4. Enter the title and description in the event or platform fields, then create the platform.

To edit metadata later, YouTube’s guidance says you can edit it during stream creation or scheduling, or use Edit in the stream settings in Live Control Room. Castr’s documented social metadata endpoint can update title and description for YouTube destinations connected through its dashboard using the YouTube API. Its listed fields do not include a thumbnail. Check Castr’s social metadata API documentation before relying on an API workflow.

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#1 Best Overall
ZowieBox, 4K HDMI NDI Video Encoder/Decoder, HDMI NDI
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If you connect with a manual stream key

  1. Open the YouTube stream or scheduled event and retrieve its server and stream key from the stream settings.
  2. In Castr, add YouTube as a destination and paste in the server and key.
  3. For the viewer-facing title and description, return to YouTube Studio and edit the stream’s details there. Castr’s guide directs manual-key users to YouTube’s dashboard for description edits.

Changing a Castr project name is not a substitute for changing YouTube metadata. Castr describes its project name separately from the YouTube event title and description. Its current start guide explains the project/dashboard setup: How to Start a Live Stream in Castr.

Add or change the thumbnail in YouTube

Use YouTube Studio’s scheduling or live-stream management workflow to set the custom thumbnail. Google’s production guidance places thumbnail setup in the scheduled-stream workflow; YouTube’s live settings guidance covers editing a stream’s settings. The reviewed Castr destination instructions do not show a thumbnail upload control, so do not expect the image to be set by entering a title in Castr.

Rank #2
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  1. Open YouTube Studio and create or open the scheduled live stream associated with your Castr destination.
  2. In the stream’s details or scheduling workflow, add or replace its thumbnail using the available YouTube control.
  3. Save the change, then confirm the intended image appears on the YouTube stream listing or management page.

Google’s Full Live Production guide describes the scheduled-stream workflow. The exact controls may vary as YouTube updates Studio.

Check the result before going live

  • Verify the title and thumbnail on the YouTube stream or scheduled event—not only in the Castr project dashboard.
  • Confirm the selected YouTube event is the one receiving the Castr feed.
  • Keep the stream key private; regenerate it in YouTube if it has been exposed.
  • If the title appears unchanged, refresh the YouTube management page and confirm you edited the event connected to Castr.
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Or let it run in the cloud

If your goal is an always-on YouTube stream using uploaded video rather than a live camera feed, StreamNeo is a separate option: upload a recording or build a playlist, add your YouTube stream key once, and go live. It loops the video from the cloud, so your computer and home connection do not need to stay on. It streams the uploaded file as made, up to 4K 60fps, at one flat price per slot, and automatically recovers if YouTube drops the stream. The first day is free with no card.

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Rank #3
URayCoder HD HEVC H.265 MPEG4 H.264 4K HDMI to Video Streaming IPTV Encoder for HDMI to RTSP RTMP HTTP UDP HLS SRT Facebook YouTube Live Streaming Server
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  • ⭐【Multi-protocol and Multi-platform Compatibility】- Fully compatible with streaming protocols such as HTTP, RTSP, RTMP(S), SRT, HLS(M3U8), MP4, Multicast(UDP, RTP, PTL), ONVIF, FLV, it can simultaneously output 4 video streams with different protocols and push them to live streaming platforms such as YouTube, Facebook, Twitch, and Vimeo with one click. Simultaneous live streaming across multiple platforms can be achieved without additional equipment.
  • ⭐【Highly Customizable Settings to Meet Individual Needs】- It supports adding static text, scrolling captions, brand logos, and timestamps. Users can freely adjust core parameters such as video resolution, frame rate, and bitrate, and also perform personalized editing functions such as video cropping, rotation, flipping, and mirroring. It supports dual input of HDMI embedded audio and line-in audio, with adjustable sound quality, making your live stream content more distinctive and allowing you to create a unique brand live stream style.
  • ⭐【Stable and Efficient Transmission, Easy Operation】- Employing HDMI to Ethernet core connection technology, it ensures stable and reliable network transmission with low latency and no lag, adapting to various network environments. Equipped with an intuitive user interface and detailed instruction manual, no professional technical background is required; setup can be completed quickly after connecting the device. It is also compatible with multiple terminals such as computers and mobile phones for management, and the video stream status can be viewed in real time via a URL.
  • ⭐【Lifetime Free Warranty and Technical Supports】- All URayCoder video codecs come with a lifetime free warranty and technical supports, supporting secondary development and feature customization to meet enterprise-level personalized needs. Meanwhile, we providing many kinds of customization services such as shell pattern printing, logo addition, hardware and function development, ensuring reliable quality and worry-free after-sales service.

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