Facebook probably changes its interface

[LordBlick]

$  youtube-dl --verbose --write-pages 'https://www.facebook.com/video.php?v=563797976994181' 
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', '--write-pages', 'https://www.facebook.com/video.php?v=563797976994181']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.12.10.1
[debug] Python version 2.7.8 - Linux-3.17.4-1-x86_64-Intel-R-_Core-TM-_i7-4700MQ_CPU_@_2.40GHz-with-pld-3.0-PLD
[debug] exe versions: ffmpeg present, ffprobe present
[debug] Proxy map: {}
[facebook] 563797976994181: Downloading webpage
[facebook] Saving request to 563797976994181_https_-_www.facebook.com_video_video.phpv=563797976994181.dump
Traceback (most recent call last):
  File "/usr/bin/youtube-dl", line 9, in <module>
    load_entry_point('youtube-dl==2014.12.10.1', 'console_scripts', 'youtube-dl')()
  File "/usr/share/python2.7/site-packages/youtube_dl/__init__.py", line 355, in main
  File "/usr/share/python2.7/site-packages/youtube_dl/__init__.py", line 345, in _real_main
  File "/usr/share/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 1133, in download
  File "/usr/share/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 554, in extract_info
  File "/usr/share/python2.7/site-packages/youtube_dl/extractor/common.py", line 242, in extract
  File "/usr/share/python2.7/site-packages/youtube_dl/extractor/facebook.py", line 152, in _real_extract
KeyError: u'video_duration'

Page dump contains no any error messages.

[phihag]

Thank you for the report. I believe this issue to be fixed in youtube-dl 2014.12.10.3 and newer. See our FAQ if you have trouble updating.

By the way, can you post the output you get when you run ffmpeg -version? It looks like our detection is erroneous here.

[LordBlick]

$  ffmpeg -version 
X server found. dri2 connection failed! 
Trying to open render node...
Success at /dev/dri/renderD128.
ffmpeg version 2.4.4 Copyright (c) 2000-2014 the FFmpeg developers
built on Dec  4 2014 00:59:48 with gcc 4.8.3 (PLD-Linux) 20141010 (release)
configuration: --arch=x86_64 --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --extra-cflags='-D_GNU_SOURCE=1 -O2 -fwrapv -pipe -Wformat -Werror=format-security -gdwarf-4 -fno-debug-types-section -fvar-tracking-assignments -g2 -Wp,-D_FORTIFY_SOURCE=2 -fno-strict-aliasing -fstack-protector --param=ssp-buffer-size=4 -fPIC -march=x86-64 -gdwarf-4 -fno-debug-types-section -fvar-tracking-assignments -g2 -I/usr/include/decklink' --extra-ldflags='-O2 -fwrapv -pipe -Wformat -Werror=format-security -gdwarf-4 -fno-debug-types-section -fvar-tracking-assignments -g2 -Wp,-D_FORTIFY_SOURCE=2 -fno-strict-aliasing -fstack-protector --param=ssp-buffer-size=4 -fPIC -march=x86-64 -gdwarf-4 -fno-debug-types-section -fvar-tracking-assignments -g2 -Wl,--as-needed -Wl,--no-copy-dt-needed-entries -Wl,-z,relro -Wl,-z,combreloc ' --cc=x86_64-pld-linux-gcc --disable-debug --disable-optimizations --disable-stripping --enable-avfilter --enable-avresample --enable-decklink --enable-gnutls --enable-gpl --enable-version3 --enable-fontconfig --enable-frei0r --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcelt --enable-libcdio --enable-libdc1394 --enable-libflite --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libiec61883 --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libquvi --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libutvideo --enable-libv4l2 --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-libzvbi --enable-openal --enable-opencl --enable-opengl --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-x11grab --enable-runtime-cpudetect
libavutil      54.  7.100 / 54.  7.100
libavcodec     56.  1.100 / 56.  1.100
libavformat    56.  4.101 / 56.  4.101
libavdevice    56.  0.100 / 56.  0.100
libavfilter     5.  1.100 /  5.  1.100
libavresample   2.  1.  0 /  2.  1.  0
libswscale      3.  0.100 /  3.  0.100
libswresample   1.  1.100 /  1.  1.100
libpostproc    53.  0.100 / 53.  0.100

I am surprised at such a rapid response, thank you.