hey guys i have created a banner in after effect render it as a video 720p i have got a clip in adobe premiere pro cs6 i try to crop the banner inside premiere its not working out i dont no if i am doing it right anyways all i want is this banner in lower end of my video can someone help me please thanks in advance.
Welcome to the forum.
Can you post a screen-cap of your Timeline, showing the "banner," and the underlying Video Clip(s), with the CTI (Current Time Indicator/Playhead), over that banner, and showing in the Program Monitor? That will likely tell at least part of the tale.
If your Premiere Pro sequence is 720p, then in After Effects, create a banner (which I think you might mean "Lower third") that only takes that part of the frame. Export it with an alpha channel so that when you bring it into Premiere Pro, it can easily sit over your video.