Slight tangent, but Relay for reddit[0] (an Android reddit client) has fixed this problem, in my opinion.
Whenever a video comes up that could play audio, it is automatically muted and a UI element appears for the user to unmute it. This means that I know if a video has audio along with it, even if my phone is on silent. It has the added bonus of not embarrassing me in public if a loud video comes on.
I'm not sure if this feature is turned on by default, but it's just a neat solution to this problem that I think it should be.
Whenever a video comes up that could play audio, it is automatically muted and a UI element appears for the user to unmute it. This means that I know if a video has audio along with it, even if my phone is on silent. It has the added bonus of not embarrassing me in public if a loud video comes on.
I'm not sure if this feature is turned on by default, but it's just a neat solution to this problem that I think it should be.
[0]: https://play.google.com/store/apps/details?id=free.reddit.ne...