Please close unnecessary apps & webpages and also make sure that there is enough free space on your C: drive. If the error message still appears, it means that the available storage quota allocated by your browser to our website is too small to process your video data.
You can Simulate custom storage quota, or try a different browser.
Here is the method to check your storage usage:
1). Press F12 (Windows) / Command+Option+J (Mac).
2). Turn to ''Application'' > ''Storage'' panel.
If the used storage quota exceeds the allocated storage quota or is almost the same, this is why the issue occurs.