WebGL VideoPlayer Apple Memory Issue

Hi everyone,

I have an issue with the video player and the memory, especially on Apple’s devices.

I tested with :
- Unity 2019.4.3f1 - 2019.4.9f1
- WebGL 2.0 & 1.0
- Safari 13.1.2
- Chrome version 85
- Video mp4 h264 720p (2mb - 20mb)

My app is for WebGL and I have several videos.
So I set the VideoPlayer.url (I load the video from the StreamingAssets Path),
Then VideoPlayer.Play()
When I change a video, I do Video player.Close() and then the step as said above (with a new url of course)

Inside the browser and their dev tool all the memory seems to be correct for my app.
Snapshot around 50-120Mb.

I also use this plugins found on GitHub.
Thanks to https://github.com/kongregate/Unity-WebGL-Utilities
I get these value on average : WebGL Memory - Total: 64MB, Used: 32MB, Free: 31MB

But my problem is about the memory that I can see on the task manager for windows and activity monitor on MacOS.

I focus my test on MacOs with Safari and the Activity Monitor.
The app starts around 500-600mb.
Then after 5-10 video changes, I got > 1Gb.
I don’t know why but sometimes, it stays around 1.5Gb, other time the memory can go up to 3Gb and drop to 1Gb

On MacOS with chrome, the memory stays at 500-600mb.

My big problem is with my iPad Air 2019.
With Safari or Chrome, after a few (20) video changes :
- on Safari, the page restarts
- on Chrome, I got the "Aw, Snap!" page crashes and other page loading errors.

As I have a strange value in memory on the Mac, I guess the issue on the mobile device is related to memory.

I am not an expert on Memory Management so I hope you can help me to resolve my issue.

In attachment, you can find one screenshot of the web inspector from Safari MacOS.
In the archive, I export 2 timelines in .json so you can import them inside your web inspector.

Thank you for the help !