ERROR: audio conversion failed

[644]

I've tried downloading a couple of songs and converting to MP3. It used to work, but now it doesn't, so maybe it's something to do with the new update? (This only started happening after I updated).

root@whisky:~# youtube-dl -x https://www.youtube.com/watch?v=ytQ5CYE1VZw        [youtube] ytQ5CYE1VZw: Downloading webpage
[youtube] ytQ5CYE1VZw: Downloading video info webpage
[youtube] ytQ5CYE1VZw: Extracting video information
[download] Eminem - Till I Collapse [HD]-ytQ5CYE1VZw.webm has already been downloaded
[download] 100% of 5.08MiB
[ffmpeg] Destination: Eminem - Till I Collapse [HD]-ytQ5CYE1VZw.mp3
WARNING: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors.
ERROR: audio conversion failed: Decoder (codec id 0) not found for input stream #0:0

Different song:

root@whisky:~# youtube-dl -x https://www.youtube.com/watch?v=_Yhyp-_hX2s
[youtube] _Yhyp-_hX2s: Downloading webpage
[youtube] _Yhyp-_hX2s: Downloading video info webpage
[youtube] _Yhyp-_hX2s: Extracting video information
[youtube] _Yhyp-_hX2s: Downloading MPD manifest
[download] Destination: Eminem - Lose Yourself [HD]-_Yhyp-_hX2s.webm
[download] 100% of 5.20MiB in 00:00
[ffmpeg] Destination: Eminem - Lose Yourself [HD]-_Yhyp-_hX2s.mp3
WARNING: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors.
ERROR: audio conversion failed: Decoder (codec id 0) not found for input stream #0:0

Debian 7 OS

[dstftw]

Post the full output of youtube-dl when run with -v, i.e. add -v flag to your command line, copy the whole output and post it in the issue body wrapped in ``` for better formatting. It should look similar to this:

$ youtube-dl -v <your command line>
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2015.12.06
[debug] Git HEAD: 135392e
[debug] Python version 2.6.6 - Windows-2003Server-5.2.3790-SP2
[debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
[debug] Proxy map: {}
...

Do not post screenshots of verbose log only plain text is acceptable.

The output (including the first lines) contains important debugging information. Issues without the full output are often not reproducible and therefore do not get solved in short order, if ever.