Android
Boost: works fine.
Jerboa: wouldn’t load in the app, but I could save it and watch it locally.
Connect: Buggy with media in general. Even some jpeg files. Didn’t work.
Sync: works fine.
Voyager: Seems to work, but muted. Probably a setting to enable sound that I didn’t find.
Firefox: works fine.

Apple
Memmy: Didn’t work.
Mlem: Didn’t work.
Arctic: Didn’t work.
Avalon: Didn’t work.
Voyager: Didn’t work.
Safari: Didn’t work.
Firefox: Didn’t work.

For Apple, many of the apps (including browsers) loaded the iOS media player and that was what didn’t work.