To all:

Since the create animated gif command (running java script) was failing to create a full 240 image gif file on the GOES Image Viewer webpage https://www.star.nesdis.noaa.gov/goes/fulldisk_band.php?sat=G16&band=EXTENT3&length=240&dim=1 I was forced to hack into my Mozilla Firefox browser cache.

I copied the cache files from the stored cache of my Mozilla Firefox browser and copied them to a processing folder.

Once there, I used the identify command to locate good jpeg files, removing all other files, but then I had to remove duplicates as I found out that some jpegs were repeated.

I then used the grep -a command to search these binary files for the LABEL, which provides the actual timestamp for sorting the image files in temporal order. This enabled me to find duplicate images which I discovered, so I had to remove them too.

After all these operations (having specified 240 image files on the NOAA webpage) I found out that I had only 237 unique image files, not 240. Oh well...

Using the ffmpeg command: ffmpeg -framerate 10 -i %3d.jpg -c:v libx264 -r 5 output.mp4 I was able to successfully create an mp4 video of the GOES-16 Geocolor + GLM overlay images for a 20 hour loop from 0ct 31, 2024 06:26 UTC to Nov 1, 2024 01:51 UTC with a supposed 5 minute delay between images.

I probably should write all of this up in a bash script for easy linux processing, so anyone can quickly create their own mp4 video of the GLM over Geocolor GOES-1(6,8,9) full disk images.

Randall


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