Download images from Eumetsat website and directly create a video like this youtu.be/zUIGst0qVF8 sample.
This is a combination of a curl download of a list of files and ffmpeg's image2pipe format. No image files have to be stored locally.
The script itself is thus called "eumet.sh". The main thing it does is generate a list of the current hourly images since a certain date. Eumetsat keeps about 115 images around, the last 5 days. So by using this script every 4-5 days you can record without gaps or overlappings.
There is too much to modify or tune; there are some params, but mostly it is meant to be changed in the dot script, and to be re-sourced.
There is low- and hi-res, 800 vs. 3712 pixels square. I used hi-res for the 1080x1080 animation, but the difference on my Full HD screen is small. A minimum is maybe 500x500, good if you want to keep the mp4 small.
With the hi-res, the -s option in ffmpeg is important; otherwise it will try/make a
3712x3712 video.
ffmpeg needs -pix_fmt because the images are in an old JFIF format with yuvj420p;
this works, but ffplay gives a warning for each frame.
I also left the -c hevc because the mp4 is almost half the size than with h264.
Firefox says "corrupt", but for ffplay and youtube it is OK.
curl "https://$h/$p{D,E,F,G,H,...}" | ffmpeg -f image2pipe -i - out.mp4
With D-H being the date-selected image names.