A bash script to download a twitch archive broadcast by its id number. needs axel and ffmpeg.

twitch-downloader

#!/bin/bash

ID=$1
DATA="$(curl -silent http://api.justin.tv/api/broadcast/by_archive/$ID.xml?onsite=true)"

URLs="$(echo $DATA | grep -io 'http.*\.flv')"
NAME="$(echo $DATA | grep '<title>' | head -n1 | sed 's/<title>//g' | sed 's/<\/title>//g' | sed 's/^ *//g' | sed 's/ /\./g'| sed 's/\///g'|sed s/\'//g)"

mkdir "$NAME"
cd "$NAME"
 
COUNTER=1
while read -r line; do
  axel -a -n20 "$line"
  filename="$(basename $line)"
  mv "$filename" "$NAME.-.Part.$COUNTER".flv
  let COUNTER=COUNTER+1
done <<< "$URLs"

for f in ./*.flv; do echo "file '$f'" >> file.list; done
ffmpeg -f concat -i file.list -c copy "$NAME.m4v"