update shockwave/swf/flash/flw panorama with
lost original files to circular panorama for html5

According to Takács István,"360° Panoramic Photographers on Facebook" group:
Flash Browser – Web Browser build for Flash Player, should work for display.

And here's how to train flash to cylindical pano:

Open the swf file in ffmpeg:
ffmpeg -i vess_alley_2_rev_1_out.swf
and get information on the file:

	Input #0, swf, from 'vess_alley_2_rev_1_out.swf':
	Duration: N/A, bitrate: N/A
	Stream #0:0: Video: rawvideo (ARGB / 0x42475241), argb, 160x96, 60 tbr, 60 tbn [navigation help, two small files]
	Stream #0:1: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 588x720 [b/w preview files + color files]
	SAR 96:96 DAR 49:60, 60 fps, 60 tbr, 60 tbn
This is not very deep info. But ffmpeg was not made for swf.

ffmpeg -i vess_alley_2_rev_1_out.swf xzx/%02d.jpg
gives me 12 images, 6 b/w, 6 color, and as the b/w images are preview images we remove them.

The 6 color ones needed to be reordered.
07 to 03
08 to 04
09 to 02
10 to 05
11 to 01
12 to 06

ffmpeg -pattern_type glob -i "xzx/1/*.jpg" -vf "tile=6x1" xzx/vess2.jpg

Or if not renamed (it's the input order that decides here, not the name of the file).
ffmpeg -i xzx/11.jpg -i xzx/09.jpg -i xzx/07.jpg -i xzx/08.jpg -i xzx/10.jpg -i xzx/12.jpg -filter_complex 'hstack=inputs=6' xzx/vess2.jpg

I have found some other swfs that needed this reordering instead:
ffmpeg -i dir/07.jpg -i dir/09.jpg -i dir/11.jpg -i dir/12.jpg -i dir/10.jpg -i dir/08.jpg -filter_complex 'hstack=inputs=6' x.jpg


If you need the panorama file to be in 2:1 ratio, pad the images, see: "reassemble an old pano"

And then to Pano2VR or similar for the html5 conversion.