From the preparation of the third video about .... I think the video is still not perfect and still has several sections that need improvement, such as the quality of the camera location and presentation.
A video from the third story .... I think that video is not perfect. And, there are many areas that need improvement, such as the quality of the camera location and ready for presentation.
From the third video on... I think that the video is incomplete. And there are many areas that need improvement, such as the quality of the camera location and availability in the presentation.