This workflow lets you download videos or just the audio track of a video from YouTube, Vimeo, Vine and many more  to your computer.
You just open Alfred, type…
video-dl (optional: video url)
… to download the video from the currently opened Safari tab or paste the URL to the video. Choose whether you want to download the video or just the audio from the URL and wait for your download to finish.
To install the workflow click the download link and add it to your existing workflows by double clicking the file. After that you’re ready to go, no extra configuration required.
-bug fixes and new updated version of youtube-dl