IVS: Disable Audio

My use-case requires only video to be delivered. At the playback end, I have it setup so that the audio is muted. However, if somebody finds the raw stream URL, they may be able to access the audio.

I realise the audio can be muted at the recording end so it never even gets sent to IVS. However, some users may accidentally still record audio which could be problematic. Is there a way to setup IVS channels with no audio, and if not, could this feature be added?