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encoder

How to Change a YouTube Stream Key from Default to Custom

Create a reusable custom YouTube stream key in Live Control Room and enter it in the right encoder field. Learn when to keep automatic settings and how to replace a failing or compromised key.

By DocumentaryTube Team 3 min read
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To create a custom YouTube stream key, open YouTube Studio and go to Create > Go Live > Stream. Under Select stream key, choose Create new stream key, set the options you need, and click Create. Select the new key and paste it into your encoder’s Stream Key field. YouTube recommends leaving resolution and frame-rate detection on automatic unless you specifically need manual control.

What a custom YouTube stream key does

A stream key is the credential your encoder uses to send a feed to YouTube. YouTube’s documented reason to create a custom key is to reuse the same key for future streams. It is an option in Live Control Room, not a paid add-on or a requirement for ordinary streaming. YouTube Help: Manage live stream settings

Changing the key type is separate from choosing a connection protocol. A custom key can be used with the stream URL and protocol configured for your encoder.

Choose whether to keep automatic settings or create a custom key

Choice When it fits Resolution and frame rate
Keep the default key and automatic detection You do not need to reuse a specific key or set resolution manually. YouTube recommends automatic resolution and frame-rate detection by default.
Create a custom key You want to reuse the same key, or specifically need manual resolution selection. To choose resolution manually, enable Turn on manual settings under Stream Resolution while creating the key.

A custom key does not inherently improve stream quality. Choose manual settings only when you have a reason to set resolution yourself and have configured your encoder to send a compatible feed. For YouTube’s encoder settings and guidance, see Choose live encoder settings, bitrates, and resolutions.

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Create and select a custom stream key

  1. Open Live Control Room. Sign in to YouTube Studio and select Create > Go Live.
  2. Open the stream controls. Select the Stream tab.
  3. Start creating a key. Under Select stream key, choose Create new stream key.
  4. Set the options. Enter the preferred settings. If manual resolution is your goal, turn on Turn on manual settings under Stream Resolution. If not, leave automatic detection in place.
  5. Create and choose the key. Click Create, then select the newly created key from the stream key list.
  6. Update your encoder. Copy the selected key into the encoder’s Stream Key field. YouTube’s encoder setup guidance is at Create a YouTube live stream with an encoder.

Keep the stream key and stream URL in the right fields

The stream key and server URL are different values. The key identifies and authorizes the feed; the stream URL tells the encoder where to send it. Copy each value into its matching field in the encoder rather than pasting the key as the server address.

If you use RTMPS, copy the RTMPS stream URL separately from Live Control Room. YouTube notes that the interface may show the ordinary RTMP URL initially; select the lock icon to reveal the RTMPS option. YouTube recommends RTMPS encryption. This protocol choice does not change how you create a custom key. See Encrypt your stream using RTMPS.

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Replace a key that fails or may be compromised

If the encoder will not start

YouTube’s live-stream troubleshooting guidance recommends getting a new stream key in Live Control Room and updating the encoder with it. Confirm that the encoder contains the currently selected key and the correct server URL in separate fields. See Troubleshoot your YouTube live stream.

If someone else may have the key

Reset the key from the Stream key section in Live Control Room, then replace the old value in every encoder that should continue streaming. YouTube says only channel owners and managers can reset a key; editors and viewers do not have that permission. Treat a reset as a credential change: an encoder still using the previous key must be updated.

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