I have a video that I would like to zoom in/out and pan to keep my subjects centered. I tried to do this by splitting the video and cropping the individual segments, however that will be too choppy. I know there has to be a feature to move the frame of zoom live, while playing the video so it is smooth and the zooms are fluid. New to this so any suggestions for software would be much appreciated.
Most video editors have some kind of keyframes feature. By using keyframes, you can change the values of the position and scale of the video for a single frame and have different values for another frame. The video editor will then calculate what the values should be for all the frames between these two keyframes so that these change gradually over time. This way you can make subtle and continuous changes to the framing of your video and you could use this to make your subject stay in the center of the frame without it being too distracting.
In the case that manually setting all the values is too much work, professional video editing software often have some kind of tracking tool which can track the subject for you. You can then let the position of the video follow the path of the subject. But for just keeping the subject in the center, tracking would most likely be too much of a hassle.
So what kind of software could do this?
This would be possible to do in most modern professional video editors. But for example, you could do this in Premiere Pro. Make sure to check the documentation and help forums of the software for the specifics on how to do this and I also suggest looking up a tutorial. Also bare in mind that cropping part of the video will result in a loss of quality since there will be less pixels to be displayed, no matter what software you use.