How to specify a filename while extracting audio using youtube-dl?
Try the command
youtube-dl --extract-audio --audio-format mp3 --output "%(uploader)s%(title)s.%(ext)s" http://www.youtube.com/watch?v=rtOvBOTyX00
As you could reed in the youtube-dl manpage the corresponding option would be -o :
youtube-dl --extract-audio --audio-format mp3 -o "%(title)s.%(ext)s" http://www.youtube.com/watch?v=rtOvBOTyX00
You can specify name by using argument --output and then specifying the name in the following syntax in place of specific_name
youtube-dl https://www.youtube.com/watch?v=iuJDhFRDx9M -x --audio-format mp3 --output "specific_name.%(ext)s"