QQ space problem, there are some videos in the mobile phone, I want to send them to the space, but I can't find this video inside.

You can see where your video is, whether it is in the photo album of your mobile phone, whether you shot it yourself or downloaded it. You might as well open the video and move it to your mobile phone photo album, and then send it to QQ space, where you can find it. In another case, the video format may not be supported. So it can't be uploaded. Or hiding in a gallery. You can look for it in the file management and save it in the photo album.