Soundcloud file extension resolves to 'unknown'

[mistakia]

youtube-dl -F http://soundcloud.com/bpitch-control/moderat-a-new-error
[soundcloud] bpitch-control/moderat-a-new-error: Resolving id
[soundcloud] bpitch-control/moderat-a-new-error: Downloading info JSON
[info] Available formats for 1284839:
format code extension resolution note
download unknown audio only

youtube-dl --get-filename http://soundcloud.com/bpitch-control/moderat-a-new-error
Moderat - A New Error (BPC200)-1284839.unknown

[phihag]

As strange it may look, this is the official description of soundcloud for this format. My file tool says "Audio file with ID3 version 2.4.0", whatever that may be. Internally, an only human-readable hint points to the original extension being mp3, but that's not correct either. mplayer identifies it as "mpg1/2/2.5", and it starts with an ID3 header.

Therefore, I do think this is the correct behavior. If you think otherwise: What extension would you expect?

Starting with youtube-dl 2014.03.24.2, you can now download other formats too. For example, use -f http_mp3_128_url/best to download mp3 first, and only switch to the original formats if mp3 is not available.

[mistakia]

ah thanks for that wonderful response. I do believe that is the correct behavior as well.