A simple script to download and clip out youtube videos with youtube-dl and ffmpeg.

youtube-clip.sh

#!/bin/bash

# to run and extract clip
# ./youtube-clip.sh UF8uR6Z6KLc --trim 00:03:32 00:05:32

# youtube video id
vid="$1";

echo "[youtube-dl] download video from youtube in .mp4 format...";
youtube-dl --format mp4 $vid -o '%(title)s.%(ext)s';

if [ "$2" == --trim ]
then    
    # from which point to which point you want to trim
    # start e.g.    00:03:32
    # end   e.g.    00:05:32
    start="$3";
    end="$4";
    
    # get the name of the video file
    file_name=`youtube-dl --get-filename -o '%(title)s' $vid`;
    
    # file extension
    ext="mp4";
    
    # path to working directory
    path=`pwd`;
    
    # video clip name and path to store location
    clip="$path/${file_name}_clip.${ext}";
    
    echo "[ffmpeg] cutting out the section file you need";
    ffmpeg -i "$path/$file_name.$ext" -ss $start -to $end "$clip";
fi

echo "done...";