Takes a list of Youtube videos, concatenates them into a mix.

• The user pastes a list of Youtube links into an HTML form, clicks "Submit"
• The server downloades the files using yt-download
• Then, it concatenates them using FFmpeg
• The file download beigins

youtube-dl --output '%(autonumber)s.%(ext)s' --extract-audio --audio-format mp3 --audio-quality 9 --add-metadata --no-overwrites --continue --batch-file playlist.txt

songs.txt:

# this is a comment
file '/path/to/file1'
file '/path/to/file2'
file '/path/to/file3'

Command:

ffmpeg -f concat -i mylist.txt -c copy output

• How many songs do we allow in a playlist?
• What happens if some songs are really long?
• Where will we host it? Some Youtube videos are banned in some countries. Proxy?
• We're executing shell commands. Security concerns? Review yt-download source code.
• Processor / RAM / disk memory / bandwidth limits and concerns?
• How can we improve the GUI?