This tool gets links to the raw video files for a specified section of a Twitch VOD.
You can then use tools such as
ffmpeg to join the parts and convert to a better format.
The cut is not precise and may be off by a few seconds at either end.
Got a question, bug report or suggestion? Leave feedback
here
Unfortunately, Twitch has killed the API used by this tool (and many other similar ones). The tool will be out of services until we can find a replacement API.