Loading deepar canvas/filter pre-stream?

Any idea how I could have a deepar filter loaded on an alpha canvas waiting to detect a face? I am looking to potentially add this to a web-stream situation as a fun addition, where users sent to an output feed will automatically have the filter effect populate once video steam joins. Right now I am having an issue with the canvas going black between users. Thanks in advance!

You can wait to detect a face using a callback

I’m not sure what your intended use case is with an alpha canvas but DeepAR will just display the camera feed if the face isn’t detected and there isn’t a camera space filter active