ffprobe of the media files

$ ffprobe test.mp4
    avprobe version 0.8.9-4:0.8.9-0ubuntu0.12.04.1, Copyright (c) 2007-2013 the Libav developers
      built on Nov  9 2013 19:08:00 with gcc 4.6.3
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
      Metadata:
        major_brand     : mp42
        minor_version   : 0
        compatible_brands: isomavc1mp42
        creation_time   : 2010-05-12 11:05:21
      Duration: 00:02:55.68, start: 0.000000, bitrate: 569 kb/s
        Stream #0.0(und): Audio: aac, 44100 Hz, stereo, s16, 94 kb/s
        Metadata:
          creation_time   : 2010-05-12 11:05:21
        Stream #0.1(und): Video: h264 (Constrained Baseline), yuv420p, 480x360 [PAR 1:1 DAR 4:3], 472 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
        Metadata:
          creation_time   : 2010-05-12 11:05:21

$ ffprobe test.avi
    avprobe version 0.8.9-4:0.8.9-0ubuntu0.12.04.1, Copyright (c) 2007-2013 the Libav developers
      built on Nov  9 2013 19:08:00 with gcc 4.6.3
    Input #0, avi, from 'test.avi':
      Metadata:
        encoder         : Lavf55.18.104
      Duration: 00:02:55.67, start: 0.000000, bitrate: 852 kb/s
        Stream #0.0: Video: msmpeg4v2, yuv420p, 480x360, PAR 1:1 DAR 4:3, 29.97 tbr, 29.97 tbn, 29.97 tbc
        Stream #0.1: Audio: adpcm_ms, 44100 Hz, 2 channels, s16, 352 kb/s

$ ffprobe test.ogg
    avprobe version 0.8.9-4:0.8.9-0ubuntu0.12.04.1, Copyright (c) 2007-2013 the Libav developers
      built on Nov  9 2013 19:08:00 with gcc 4.6.3
    Input #0, ogg, from 'test.ogg':
      Duration: 00:02:55.72, start: 0.000000, bitrate: 380 kb/s
        Stream #0.0: Audio: flac, 44100 Hz, 2 channels, s16
        Metadata:
          MAJOR_BRAND     : mp42
          MINOR_VERSION   : 0
          COMPATIBLE_BRANDS: isomavc1mp42
          CREATION_TIME   : 2010-05-12 11:05:21
          ENCODER         : Lavf53.21.1