You should probably not automatically play audio. Or, if you must have audio, don't automatically play the video.

I'd suggest never automatically playing music. I always imagine the user just watched a youtube video with really low volume.

I don't want a clearer way to stop the audio, I want it to not start unless I ask for it. I honestly can't see any reason to have auto-playing audio on a web page unless that's the entire purpose of the page (audio or video player) or you're purposefully annoying people.

I don't know if there's speech (my audio is off), but I understood exactly what it did without audio.