How to Fade an image in and out between two movie clips?

I want to show an image briefly between two movie clips - like flashing up a summary slide between the end of one clip and the start of another. I want the image (summary slide) to gradually fade in as the first clip ends, then some time later fade out as the next clips begins.

I can make it work in a clunky kind of way using opacity and keyframes - similar to what I mentioned about zoom in/out in another thread. So I insert my summary slide image as a strip above and between the two clips, slightly overlapping. I set the image’s opacity to 0 then 1 and use key frames at these points, then do the opposite towards the end of the image strip to fade it out and bring up the next clip…

I have to do this about 6 times throughout my tutorial video. (The same process each time, just with a slightly different summary slide image and joining clips)

What’s the best way to achieve this in Blender?

Thanks