Peertube is a wonderfull video plateform. You can comment any video from any peertube instance if you have a Mastodon or Pleroma account. It should work theoreticaly with any compatible ActivityPub Account.
Go to the video you want to comment. Here is an example.
Do not try to comment from this page, if you don’t have a peertube account. It is complicated. But go to your Mastodon account.
- Copy the url of the peertube video
- In your Mastodon account paste it in the search box
3. Write your comment
Now see the video page of peertube