[QA] DCLMF24 | Video/stream reset/delay

[DafGreco]

Build version:

0.45.0

Issue Description:

Some users experience the video stream reset or having delay issues on the main stage

STR:

1. Open 0.45.0
2. Go to the main stage of the Music Festival
3. Validate that some users experience some delay on the video when it starts

❌ Actual Result:

Video/stream reset/delay

✔️ Expected Result:

The stream should not reset or have delay issues when streaming

Repro Index:

2/5

Additional Notes:

This issue happened on Macos mainly

[dalkia]

This is 100% reprodueceable locally

Checkout https://github.com/decentraland-scenes/dcl_music_fest_2024_stage

In scheduleSetup.ts, do the following changes

This will make the show start at the 500 seconds mark. If you open in web, you can see that the shows starts at that point

But if you open in alpha, the show starts from the beggining

[QThund]

This is 100% reprodueceable locally

Checkout https://github.com/decentraland-scenes/dcl_music_fest_2024_stage

In scheduleSetup.ts, do the following changes

This will make the show start at the 500 seconds mark. If you open in web, you can see that the shows starts at that point

But if you open in alpha, the show starts from the beggining

The current issue is different. The symptoms are the same but not the cause. The bug was filed before the Video prioritization PR was merged. By that time, the bug was very hard to reproduce and the cause is still unknown (will share some details below). But the current problem is due to a corner case not addressed by the merged PR. I think a different issue should be created to handle a different problem (or I can send a PR without filing a new bug, as I already fixed it).

Regarding the original bug, this is what we know:
-It is only reproducible when connecting to the scene in production, never locally.
-The scene sends the correct time value.
-The time value is stored in a PBVideoPlayer structure (Position field), properly filled in the scene.
-The data structure arrives the renderer without that field filled, sometimes (take a look at MediaPlayerExtensions.SetPlaybackPropertiesAsync).