Go to releases for the current build. Download concat.exe if you are on windows and concat if want to use it on ubuntu.

You need ffmpeg for this tool to work. On windows you can get it here. On Ubuntu "sudo apt-get install ffmpeg" will work.

You have to call concat from the console.

Calling options:

• -vod -vod="123456789" specify what vod you want to download or want quality informations on. Call with the number you find in the url of the vod eg (https://www.twitch.tv/videos/123456789 => 123456789)
• -start -start="0 0 0"
• -end -start="1 20 30"
• -quality -start="720p60" if you don't set the quality concat will try to download the vod in the highest available quality, see -qualityinfo for all available quality options for each vod
• -qualityinfo -qualityinfo

Blog post about the tool.

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