For the future, it's probably best to post to Lemmy communities from a Lemmy, kbin, or Friendica account; otherwise you risk the formatting of your message getting badly messed up, as it has here. It's cool that you can post here from Mastodon but that doesn't make it a good idea.
It would also have helped if you included some description with your link.
You can actually write posts from a Mastodon account that look well on Lemmy. All you have to do is follow a few basic rules.
Your post must include a line break. Everything above the break will be converted into the title of the post, everything below into the body.
Don't put any hyperlinks into your title. That includes hashtags and @ mentions. See the original post for why
Keep your headline short. Lemmy has a character limit for the headline and if you exceed it your title might just end mid sentence
Put the @ mention of the community at the end of your post. It's nothing but a technical necessity, so treat it as such and hide it away at the bottom of your post
If you follow these rules you can write posts from Mastodon
Carles@mastodon.world to 
For the future, it's probably best to post to Lemmy communities from a Lemmy, kbin, or Friendica account; otherwise you risk the formatting of your message getting badly messed up, as it has here. It's cool that you can post here from Mastodon but that doesn't make it a good idea.
It would also have helped if you included some description with your link.
You can actually write posts from a Mastodon account that look well on Lemmy. All you have to do is follow a few basic rules.
If you follow these rules you can write posts from Mastodon
Here is an alternative Piped link(s): https://piped.video/IjF-rHpwVMk
https://piped.video/IjF-rHpwVMk
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I'm open-source, check me out at GitHub.