Well. I uploaded a video for my gig but actually the auto-generated thumbnail says nothing about it because it shows an angled image that does not help at all. Is it possible to choose a thumbnail as it is in YouTube? The still images I uploaded are even much better than that thumbnail, which is not good since I guess the video takes priority among your samples, and if you have both video and still images the video will be the one shown in search results.
Thanks! I was able to fix it following your instructions. Very helpful! However I think the process could be simpler. It worked anyway.