Converting H.264 video to webm produces only audio

Nice tool, but it skips H.264 video.

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.MP4':
  Metadata:
    major_brand : avc1
    minor_version : 0
    compatible_brands: avc1isom
    creation_time : 2014-11-27 13:02:29
  Duration: 00:17:25.54, start: 0.000000, bitrate: 30111 kb/s
    Stream #0.0(eng): Video: h264 (High), yuvj420p, 1920x1080 [PAR 1:1 DAR 16:9], 29972 kb/s, 59.94 fps, 59.94 tbr, 180k tbn, 119.88 tbc
    Metadata:
      creation_time : 2014-11-27 13:02:29
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, fltp, 127 kb/s
    Metadata:
      creation_time : 2014-11-27 13:02:29
# avprobe output