# FAQ

Products / Plugins
Platform / Framework

# How to define the streamID?

Products / Plugins：Video Call

Platform / Framework：All

Last updated：2021-09-15 11:19

Currently, we don't restrict the `streamID` too much, and you can define the `streamID` flexibly when integrating the SDK.

Notes for defineing the `streamID`:

• It can't contain more than 256 characters.
• It can't contain URL keywords; otherwise, the stream publishing will fail.
• It can contain letters, numbers, and the following: ~, !, @, #, \$, %, ^, &, *, (, ), _, +, =, -, `, ;, ’, ,, ., <, >, /, \.

Developers often define `streamID` with `userID`, or `roomID` combined with `userID`.

To avoid exceptions, we recommend you define the `streamID` as a combination of `roomID` and `userID` to make sure streams are unique in different rooms.

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