01-23-2019, 12:44 AM
I'm happy to report this command script worked 
perfectly.
Working on 1890 Jpegs and their alpha pairs at HD video size 1920X1080, the script converted them flawlessly to transparent PNGs.
The script took about 15 minutes to convert the frames. The 'before' folder size was 2.3Gb and the 'after' folder size (just PNGs) was 3.1Gb.
I used this command to purge the JPGs: find . -type f -iname \*.jpg -delete
The fractal render took 14 hours because of the image size and because I ticked some optimisations like anti-aliasing. I assume a PNG render would have taken considerably longer. The purpose of the script is simply to reduce render time because the software can render PNGs.
Thanks again Ofnuts and also Gimp-Forum.net
perfectly.Working on 1890 Jpegs and their alpha pairs at HD video size 1920X1080, the script converted them flawlessly to transparent PNGs.
The script took about 15 minutes to convert the frames. The 'before' folder size was 2.3Gb and the 'after' folder size (just PNGs) was 3.1Gb.
I used this command to purge the JPGs: find . -type f -iname \*.jpg -delete
The fractal render took 14 hours because of the image size and because I ticked some optimisations like anti-aliasing. I assume a PNG render would have taken considerably longer. The purpose of the script is simply to reduce render time because the software can render PNGs.
Thanks again Ofnuts and also Gimp-Forum.net