converts a playlist.m3u8 webstream (containing chunks) to an mp4

tstomp4

#!/bin/bash -eu

url="$1"
output="$2"

base=$(dirname "$url")
chunklist=$(curl -s "$url" | grep "^chunklist")

if [[ -f "$output" ]]
then
        echo "File '$output' already exists; skipping." >&2
        exit
fi

for chunk in $chunklist
do
        files=$(curl -s "$base/$chunk" | grep "^media" | grep -v '_ao_')
        total=$(echo $files | wc -w)
        now=0
        for file in $files
        do
                now=$((now+1))
                echo "Fetching $file ($now/$total)" >&2
                curl -s "$base/$file"
        done
done | ffmpeg -n -i - -f mp4 "${output}.part"
mv -v "${output}.part" "${output}"