I'm experiencing video/audio playback issues on the actual version of TorBrowser installed on macOS High Sierra.
I think it's about HLS.js library: https://video-dev.github.io/hls.js/demo/
It seems that Firefox 52.4.1 resolve this issue. But the current version is 52.4.0 See: https://github.com/video-dev/hls.js/issues/1369
Any news on the next TorBrowser update?