ffmpeg-info requires an output parameter

org.nuxeo.ecm.core.api.ClientRuntimeException: org.nuxeo.ecm.core.api.ClientException: Error code 1 return by command: /bin/sh -c ffmpeg -i "/tmp/ffmpegInfo1042949441151279524.webm"
ffmpeg version 0.8.14, Copyright (c) 2000-2013 the FFmpeg developers
    built on Jul 12 2013 16:43:03 with gcc 4.7.2
    configuration: --enable-gpl --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libvpx --enable-libfaac --enable-nonfree --enable-version3 --enable-x11grab
    libavutil    51.  9. 1 / 51.  9. 1
    libavcodec   53.  8. 0 / 53.  8. 0
    libavformat  53.  5. 0 / 53.  5. 0
    libavdevice  53.  1. 1 / 53.  1. 1
    libavfilter   2. 23. 0 /  2. 23. 0
    libswscale    2.  0. 0 /  2.  0. 0
    libpostproc  51.  2. 0 / 51.  2. 0
  [matroska,webm @ 0x1900440] Estimating duration from bitrate, this may be inaccurate
  Input #0, matroska,webm, from '/tmp/ffmpegInfo1042949441151279524.webm':
    Duration: 00:00:08.38, start: 0.000000, bitrate: N/A
      Stream #0.0: Video: vp8, yuv420p, 768x480, PAR 1:1 DAR 8:5, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
  At least one output file must be specified
	at org.nuxeo.ecm.platform.video.service.VideoServiceImpl.convert(VideoServiceImpl.java:163)
	at org.nuxeo.ecm.platform.video.service.VideoServiceImpl.convert(VideoServiceImpl.java:138)
	at org.nuxeo.ecm.platform.video.service.TestVideoService.testVideoConversion(TestVideoService.java:97)
	(...)
Caused by: org.nuxeo.ecm.core.api.ClientException: Error code 1 return by command: /bin/sh -c ffmpeg -i "/tmp/ffmpegInfo1042949441151279524.webm"
ffmpeg version 0.8.14, Copyright (c) 2000-2013 the FFmpeg developers
    built on Jul 12 2013 16:43:03 with gcc 4.7.2
    configuration: --enable-gpl --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libvpx --enable-libfaac --enable-nonfree --enable-version3 --enable-x11grab
    libavutil    51.  9. 1 / 51.  9. 1
    libavcodec   53.  8. 0 / 53.  8. 0
    libavformat  53.  5. 0 / 53.  5. 0
    libavdevice  53.  1. 1 / 53.  1. 1
    libavfilter   2. 23. 0 /  2. 23. 0
    libswscale    2.  0. 0 /  2.  0. 0
    libpostproc  51.  2. 0 / 51.  2. 0
  [matroska,webm @ 0x1900440] Estimating duration from bitrate, this may be inaccurate
  Input #0, matroska,webm, from '/tmp/ffmpegInfo1042949441151279524.webm':
    Duration: 00:00:08.38, start: 0.000000, bitrate: N/A
      Stream #0.0: Video: vp8, yuv420p, 768x480, PAR 1:1 DAR 8:5, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
  At least one output file must be specified
	at org.nuxeo.ecm.core.api.ClientException.wrap(ClientException.java:59)
	at org.nuxeo.ecm.platform.video.VideoHelper.getVideoInfo(VideoHelper.java:248)
	at org.nuxeo.ecm.platform.video.service.VideoServiceImpl.convert(VideoServiceImpl.java:159)
	... 25 more
Caused by: org.nuxeo.ecm.platform.commandline.executor.api.CommandException: Error code 1 return by command: /bin/sh -c ffmpeg -i "/tmp/ffmpegInfo1042949441151279524.webm"
ffmpeg version 0.8.14, Copyright (c) 2000-2013 the FFmpeg developers
    built on Jul 12 2013 16:43:03 with gcc 4.7.2
    configuration: --enable-gpl --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libvpx --enable-libfaac --enable-nonfree --enable-version3 --enable-x11grab
    libavutil    51.  9. 1 / 51.  9. 1
    libavcodec   53.  8. 0 / 53.  8. 0
    libavformat  53.  5. 0 / 53.  5. 0
    libavdevice  53.  1. 1 / 53.  1. 1
    libavfilter   2. 23. 0 /  2. 23. 0
    libswscale    2.  0. 0 /  2.  0. 0
    libpostproc  51.  2. 0 / 51.  2. 0
  [matroska,webm @ 0x1900440] Estimating duration from bitrate, this may be inaccurate
  Input #0, matroska,webm, from '/tmp/ffmpegInfo1042949441151279524.webm':
    Duration: 00:00:08.38, start: 0.000000, bitrate: N/A
      Stream #0.0: Video: vp8, yuv420p, 768x480, PAR 1:1 DAR 8:5, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
  At least one output file must be specified
	at org.nuxeo.ecm.platform.commandline.executor.api.ExecResult.<init>(ExecResult.java:61)
	at org.nuxeo.ecm.platform.commandline.executor.service.executors.ShellExecutor.exec(ShellExecutor.java:98)
	at org.nuxeo.ecm.platform.commandline.executor.service.CommandLineExecutorComponent.execCommand(CommandLineExecutorComponent.java:159)
	at org.nuxeo.ecm.platform.video.VideoHelper.getVideoInfo(VideoHelper.java:241)
	... 26 more