OK. This is bit more involved than just “DO THIS, THEN THAT.”
It depends on the source of your video: is it the TV or a separate receiver?
What is the audio input and output on your soundbar?
Back in the day, I used to route the TV audio through a Mac mini. I think there was a TOSLINK port from TV that connects to the Phonak TV Connector box (which streams the audio to your aids across the room, once they are paired + connected). Now I just have my Roger mic connected to a separate receiver that’s connected to our home theatre. I can swap the Roger streamer with the older Phonak TV Connector, so they’re both on a credenza by our TV.
There are a LOT of techie DIYers here, so perhaps if you can fill in some blanks, you’ll get the roadmap to make this work.