Large composite image/panorama from scrolling video

[Angelo Lorenzo]

Create a comp that is one pixel tall and however many pixels wide. This slit will basically be the apex of the curve/center section of the frame you’re showing us. Render out a frame sequence and you have a sequence of one pixel long slits, the amount of images in the sequence is also the long dimension of your panorama.

I would assume from there you could do some stacking/alignment in Photoshop by creating an image sized to your height x number of images in sequence and hitting “distribute alignment”

Just a thought.

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Angelo Lorenzo

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[Walter Soyka]

Nice approach, Angelo.

I’d do the final composite in Ae instead of Ps. Bring the image sequence into Ae as a set of images, not as an image sequence. Drop them all into a comp sized as Angelo describes, then Alt-click the stopwatch for the position property and enter the following expression:

[value[0],index-1]

Next, with the property position selected, Edit > Copy Expression Only. You can then Select All and Paste, and the expression will be applied to every layer in the comp.

That will keep the X value of the position for every layer, but set the Y value to one less than the layer’s index. In other words, in a 1920 px wide comp, Layer 1 will be positioned at [540,0]; Layer 2 will be positioned at [540,1]; Layer 3 will be positioned at [540,2], etc.

There are other similar ways to approach this with time remapping or with time slice, but Angelo’s approach is very straightforward, and is probably the easiest to explain and to understand.

Walter Soyka
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[Shaun Williams]

Thank you both for your suggestions. They have worked, just as I’d hoped.

I’ve been playing around with the settings these past few weeks and managed, from simple videos like the one I used as an example, to get a perfectly accurate composite picture of the whole paper roll. I was able to generate a MIDI file from it using some other software, so now have a secure digital backup of the music from which I could potentially have a new roll cut should I ever need to.

So, thanks again Angelo and Walter, your help is much appreciated!