Add the "extract audio" option to reduce the size of the downloaded file and automatically extract the audio track from dailymotion videos

[trimechee]

Hello, when we sleep we often listen to rare documentaries in French on crime which only exist on the dailymotion site, for example:

https://www.dailymotion.com/video/x8xx4py

and to save disk space ot quicly transfer the audio files to our samrtphone via snapdrop website for exemple, it will be great to automatically extract the audio track with this automatic audio extraction preset for dailymotion and facebook videos :

-f bestaudio/worst

or

-f bestaudio/worst -x

Thank you so much !