Our goal is to have auto-play videos with sound on, but no user sound controls displayed. This combination is not currently supported by the StoryMaps video player settings.
We are using StoryMaps this way for interactive museum exhibits. We would like for some videos to auto-play as the visitor scrolls through the story on a large touchscreen monitor, however, we do not want the visitor to be able to mute/unmute or otherwise change the video's sound level.
Presenting the settings for auto-play, sound on/off, volume level, play/pause, maximize/minimize, loop/don't loop, etc. as distinct options could help support a wider variety of use cases, including the one described above.
(In a Sidecar, you can use an embed as a workaround by embedding your own web page with your own video player configured as you need. This workaround is not currently compatible with the Map Tour block, however, as it only supports adding images or videos.)