iPad stops all HLS video streaming of other users in a same room.

[kaitas]

Description iPad stops all HLS video streaming of other users in a same room.

To Reproduce Here is my time limited testing room for HLS live streaming using AWS Media Live on Mozilla Hubs server, the streaming is working fine on PC browsers. (1) When you visit here by iPad , The video is not played on iPad correctly. (= Other visitors can watch video stream correctly, just iPad is watching a static image) https://hubs.mozilla.com/4tU6Vmk/hls-streaming-test

(2) When I reload iPad Safari, Hubs client doen't show the scene correct, but it may be a different issue.

(3) When I set the same HLS stream (.m3u8 from AWS Media Live) to video on my Hubs cloud Enterprise with my domain, it becomes more harder issue. The all visitors video stops.

(4) We need to reload scene to recover it.

Here is my bug report video for this issue. https://youtu.be/Ths8e4HY9SU But tell me if you need the stream to see details. (AWS streaming costs me)

Expected behavior iPad (and any other clients) don't stop video playing of others.

Screenshots https://youtu.be/Ths8e4HY9SU

Hardware

• Device: iPad Pro 2019 and 2020
• OS: iPad OS 13.5.1
• Browser: Safari

Additional context

• On Mozilla server, the streaming is stoped only on iPad, other visitors are fine.
• On our self domain with Hubs Cloud AWS Enterprise, all visitors' video be stopped when iPad arrived to the lobby,
• These comments are related to this issue, but I may not understand why and how to solve this issue. Please help me.

https://github.com/mozilla/hubs/blob/master/src/components/media-views.js#L312-L338

For scene-owned videos, take ownership after a random delay if nobody else has so there is a timekeeper. Do not due this on iOS because iOS has an annoying "auto-pause" feature that forces one non-autoplaying video to play at once, which will pause the videos for everyone in the room if owned. Is this related, too? https://github.com/mozilla/hubs/issues/2035

onPauseStateChange() https://github.com/mozilla/hubs/blob/master/src/components/media-views.js#L429-L443

Discord

┆Issue is synchronized with this Jira Task

[andybak]

Well this explains some very confusing reports we were getting back during testing. However the issue here: https://github.com/mozilla/hubs/discussions/4023 might be masking this at the moment.

[andybak]

After some more testing I don't think this was the issue we were experiencing.