On Firefox it was as easy as right clicking on the image and copying the link.
Chrome refused to show the link though, and I would guess others e.g. Safari would be more similar to Chrome.
Solution: Firefox greatly simplifies such things:-D.
Edit: also, I don't know about whatever UI method you used - an app or the webpage one or whatever. What I did here was to just type out exclamation markm(this is what caused an image to be auto-loaded in the Fediverse), straight braces some alt text, parentheses with the image link inside, then check the Preview to make sure it would load before posting. Like so:
My issue is that nothing wants to play unless it’s in the body of my post, whereas I intend to offer it embedded beside the title. I found another source and created a third, but all of them are just links and nothing is fetched by Lemmy. Uploading to Lemmy also doesn’t work as Lemmy doesn’t host .mp4 videos, so I decided to convert it to a .gif to post later. I do declare, this has been a most frustrating issue.
Ah, you wanted the movie to play from the title or post text rather than comment? Yeah, I suspect that is not allowed. I for one find it highly distracting when scrolling downwards and things are moving around on their own, plus there's sound to consider, so I am kinda glad for that rule tbh - you might mean well here but anything that can be abused will be by someone with lower ethical standards:-(. I offer that as a potential reasoning as to why you might be struggling with making this happen.
But also, the Fediverse is not very technically advanced yet, compared to e.g. Reddit, but I think you are approaching it the right & only way: direct experimentation, leaning towards gifs, etc. Things might also vary by instance and if we are talking titles I believe by community, bc of how I've seen news articles set up differently. i.e. that text goes through a different filtering process, which presumably does not load images especially those with sound embedded. But I don't really post here only comment so that's all I got. One day such things will become easier but for now, the developers are working on other more pressing issues, like how to remain afloat against the constant DDoS attacks:-(. But I do wish you a happy resolution to this, to find something that you can live with:-).
Well, no. I’m just looking for workarounds and finding none. Describing an expandable embedded thumbnail may confuse people, depending on their browser of choice so I opted for the most universal description of a successfully fetched post that I could muster.