You may want to ask in the chromecast forum: https://support.google.com/chromecast/?hl=en
Do you have Generation one two or the new Google tv?
Here is a page that may help: https://support.google.com/chromecast/answer/6254654?co=GENIE.Platform%3DAndroid&hl=en
Thank you Christina Rivera for reaching out to us in the Google Chrome Forum
If this is not what you are asking, I may have misinterpreted, be sure to write back.
Hope this helps,