yt_concat

Python script that concatenates segments of YouTube and Twitch videos together in either mp3 or mp4 format. It currently supports YouTube links (both mp3 and mp4), Twitch videos (both mp3 and mp4) and Twitch clips (only mp4).

Requirements

• Python 3
• ffmpeg which can be downloaded here. Type ffmpeg in a command line to see if the command is found or not
• yt-dlp which can be downloaded here. Type yt-dlp in a command line to see if the command is found or not

This script used to use youtube-dl but it hasn't been maintained since December 2021 so yt-dlp is a good alternative.

How to use

1. Download this repository and unzip it anywhere on your disk.

2. Open links.txt and add either mp3 or mp4 in the first line based on the type of file you want.

3. In the next lines, add links, timestamp and duration separated by comas or the line can contain only a link for the entirety of the video/audio stream:

   <youtube/twitch link>, <timestamp>, <duration of the clip from that timestamp>

   <youtube/twitch link>

   Here is an example:

   mp4
   https://www.youtube.com/watch?v=EhKXCrV2eJw 4:18 0:18
   

   This means you will get an 18 second mp4 clip starting from the 4:18 timestamp in the video. You can also use decimals to be more precise.

   Here is another example with multiple entries:

   mp4
   https://www.youtube.com/watch?v=EhKXCrV2eJw 0:02.5 0:02.5
   https://www.youtube.com/watch?v=EhKXCrV2eJw 0:53.7 0:06
   https://www.youtube.com/watch?v=EhKXCrV2eJw 1:19.5 0:20
   https://www.youtube.com/watch?v=EhKXCrV2eJw 4:18 0:18
   https://www.youtube.com/watch?v=EhKXCrV2eJw 4:44 0:09
   https://www.youtube.com/watch?v=EhKXCrV2eJw 5:50 0:21
   https://clips.twitch.tv/EntertainingCrackyDinosaurJebaited-B3L3T7XGxBsEU8rE
   

   This will concatenate all these clips together into a single mp4 file. Notice how you can mix YouTube and Twitch links together.

   Note regarding mixing links together

   I have mainly done tests with links coming from the same channel but it's also possible to mix different video links from various channels. The main thing to take into account if that's what you want to do with the mp4 tag in particular, then the videos' maximum resolutions should be the same or it will likely result in errors. Same goes for mp3 as it can sometimes result in distorted audio.

4. Finally, open a command line and type:

   python yt_concat.py
   

   The resulting file will be named output_X.mp3 or output_X.mp4 where X is an incrementing number in case other outputs exist in the folder. The script also saves each segment in the segments folder but deletes them at each runtime.