Feature Automatically Load Video sized for containing element (srcset for video)

[ThatGuySam]

The idea is that you would set your video URL as the source and it would only load videos that are sized exactly to what you need so you get the best performance.

Example Implementation with Web Component and MP4 Video

<vumbnail-embed 
	source="https://mywebsite/video.mp4"
/>

And that effectively render out to something like the following:

<video width="320" height="240" controls>
	<source 
		src="https://vumbnail.com/mywebsite/video_320x340.webm" 
		type="video/webm"
	>
	<source 
		src="https://vumbnail.com/mywebsite/video_320x340.mp4" 
		type="video/mp4"
	>
	Your browser does not support the video tag.
</video>

Perhaps another idea could be setting max size or based screen size/pixel depth

For example, you probably don't always need a 1080p video for a 1080 pixel wide area depending on the context of what you're loading and where you're loading it.