'Calculate optimal size' can suggest a size larger than the maximum width (65500)

[Mathew Oakes]

I have a 26-image panorama, and got stuck for a while with it failing on this simple point.

Calculate optimal size suggests a canvas width of 70863, but Hugin cannot produce a jpeg wider than 65500.

[tmodes (tmodes)]

This is a fundamental limitation of the jpeg file format. A jpeg file is limited to images with width and height smaller than 65500. So this can't be fixed by Hugin.

There are 2 possibilities:
a) select another output format: TIFF or PNG support also such big images (on the stitch tab) or
b) decrease the canvas size (on the stitch tab) so the final pano has width<65500.

The next version (2015.2 or 2016.0) will issue a warning in this case and propose the 2 case as above.