This Obsidian plugin will turn Twitter and YouTube links into embeds when the file is previewed, without changing the contents of your file. Even works when hovering over internal links.
Just add links like you normally would:
[Twitter link](https://twitter.com/johnvoorhees/status/1437735225086316548?s=21)
[YouTube link](https://youtu.be/C4sAUc_ZGMY)
If you would like to disable a particular link, add |noembed
to the link text. For example:
[Twitter link|noembed](https://twitter.com/johnvoorhees/status/1437735225086316548?s=21)
Demo
iOS app
Android app