Welcome to the forum FishLover.
The first video looks like a female who is probably no more than a week from a fry drop. The second video is not showing the same degree of progress. If it is the same female, the first video may have been shortly after a big meal. It can be hard to tell without some very clear pictures. In the second video I saw some nice house plants, the ones with the light colored leaf edges. What are they doing in a fish tank? I try to avoid using breeding traps for mollies or any other fish that big. When they don't succeed in jumping out of the trap it often causes them enough stress to abort the fry if they are not ready when you put them in. Instead, I try to provide plenty of fry cover in the form of things like a nice clump of java moss. The fry will hide in the moss and adult mollies won't try very hard to hunt them down anyway. The other option that I have used with mollies is to put the female in her own small tank, like a 10 gallon, and let her drop her fry there. I will often get at least 30 fry that way although she may drop a few more. The female that I have been using lately is peaceful enough with her fry that I just leave her with them for a while. This picture was one of her drops around the first of the year. This is her with her fry the day they were born.
This is her with some of the fry 27 days later. You can see some of the java moss on the left side of the picture. These fry ended up not really needing it because of the nature of that particular female but I always provide some.