Hi there,
Sorry that you cannot edit videos in Photoshop anymore.
Would you mind sharing the exact version of Photoshop you're using and what is your computer's OS?
Do you face this issue while opening a specific video file or file format? Are you getting a error message? Would you mind sharing a screenshot of the error message?
We might be able to help you correctly if you could please share the above details. To begin with self troubleshooting, you may try checking the steps mentioned in this article https://helpx.adobe.com/photoshop/kb/basic-troubleshooting.html
Thanks,
Akash