I need to take a long image with an aspect ratio of, say, 1:50, and turn it into a video that pans slowly across it from left to right. My intention is to produce video suitable for Youtube, perhaps 10 minutes long.
I have a sound track that I need to match precisely with the panning (i.e. it finishes exactly when the panning reaches the end).
I need to add a "cursor", which would be something like a vertical line sitting right in the middle of each frame.
At times I might need to halt the panning of the image, and move the cursor at the same rate instead.
I need to add text labels that move with the panning, although it might be simpler if I just add these directly to the image.
Optionally, I might want to be able to zoom into the image in places, or magnify a portion of the image, with its own cursor (which will be moving faster because of the magnification).
Can anyone recommend software that can do these operations, preferably free, or a least with a free trial so I can make sure it'll work for me? I know almost nothing about video editing, and if there are technical terms for the processes I've described above, I'd appreciate knowing them so I can google them more efficiently. I'd prefer Windows software, but Linux is an option if I can't find anything for Windows.
If anyone's curious about the project, I'm trying to produce animated, annotated audio spectrograms. The general method of creating these is to use screen capture software with an audio program like Audacity, etc.
Here's a sample someone has placed on Youtube: Zebra Finch Song - YouTube. In that example, the cursor is moving rather than the spectrogram, and it's only one "page". Note that the cursor is very jumpy. This is the downfall of this method - it seems difficult to guarantee a smoothly moving display, and it gets worse when you have to deal with scrolling to the next page.
I'm wondering if video software if really what I need, and whether I should be trying to generate all the frames using ImageMagik instead.