If you already have a cast file generated from asciinema, you can generate a GIF out of it with agg.
First, download the prebuilt binary, allow it to run as an executable, and move it to the dir below to make it available anywhere in the system.
curl -sLo agg https://github.com/asciinema/agg/releases/download/v1.9.0/agg-aarch64-unknown-linux-gnu
chmod +x agg
sudo mv agg /usr/local/bin/agg
agg --help
asciinema gif generator
Usage: agg [OPTIONS] <INPUT_FILENAME_OR_URL> <OUTPUT_FILENAME>Generate the GIF
agg demo.cast demo.gif
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