????????????? taking up a bunch of memory...
You can also go to PROFILE then under your pic there is an icon with a folder in it that contains all of your captures. You can go in there "SELECT ALL" then delete. Or you can delete specific ones. You can even sort by screen cap or video.
I know its been a very long time since this was posted and I too have run into the problem of not being able to delete ones that still have the upload symbol on even though they uploaded just fine.. what I did to fix it was I went into the notifications area and when there where it said uploads and then I found the notification for the video and I deleted it and after that I was able to delete the video the normal way.