unsupported xwma file

[Elon Musk]

Summary of the bug:
How to reproduce:

ffmpeg version git-2015-10-25-f7751a5 Copyright (c) 2000-2015 the FFmpeg developers
  built with clang version 3.7.0 (tags/RELEASE_370/final)
  configuration: --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib --cc=clang --as=clang --disable-ffserver --disable-indevs --disable-outdevs --enable-gpl --enable-indev=x11grab_xcb --enable-indev=lavfi --enable-indev=alsa --enable-nonfree --enable-openssl --enable-outdev=alsa --disable-shared --enable-static --enable-x11grab --enable-ladspa --extra-libs=-pg --enable-libzimg --samples=../fate-suite
  libavutil      55.  4.100 / 55.  4.100
  libavcodec     57.  9.100 / 57.  9.100
  libavformat    57. 11.100 / 57. 11.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6. 13.100 /  6. 13.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.100 /  2.  0.100
  libpostproc    54.  0.100 / 54.  0.100
[xwma @ 0x2bf3420] Unexpected codec (tag 0x04162; id 86054) is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[xwma @ 0x2bf3420] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[wmapro @ 0x2bf4300] Unknown extradata size is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[wmapro @ 0x2bf4300] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[xwma @ 0x2bf3420] Failed to open codec in av_find_stream_info
[wmapro @ 0x2bf4300] Unknown extradata size is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[wmapro @ 0x2bf4300] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
Guessed Channel Layout for  Input Stream #0.0 : 5.1
Input #0, xwma, from '/home/computer/Downloads/ch08_01_time_to_be_a_hero_by_wrappedinblack-d9dr1ih.xwma':
  Duration: 00:01:49.01, bitrate: 192 kb/s
    Stream #0:0: Audio: wmapro (b[1][0][0] / 0x0162), 48000 Hz, 6 channels, fltp, 192 kb/s
[wmapro @ 0x2c67080] Unknown extradata size is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[wmapro @ 0x2c67080] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
Output #0, null, to 'pipe:':
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, 5.1, s16, 4608 kb/s
    Metadata:
      encoder         : Lavc57.9.100 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (wmapro (native) -> pcm_s16le (native))
Error while opening decoder for input stream #0:0 : Not yet implemented in FFmpeg, patches welcome

[Carl Eugen Hoyos]

Implemented in 6498b34bba8cf6bde4d7a9c9ea045ae1b8be106e