Is it possible to copy the container metadata using avconv?

avconv version v0.7-2138-gbbc1018, Copyright (c) 2000-2011 the Libav developers
  built on Dec  8 2011 11:59:06 with gcc 4.6.2
Input #0, avi, from 'camera.avi':
  Metadata:
    creation_time   : 2011-12-08 20:16:38
    encoder         : CanonMVI06
  Duration: 00:00:03.05, start: 0.000000, bitrate: 38623 kb/s
    Stream #0.0: Video: mjpeg, yuvj422p, 640x480, 20 tbr, 20 tbn, 20 tbc
    Stream #0.1: Audio: pcm_u8, 11024 Hz, 1 channels, u8, 88 kb/s
At least one output file must be specified


I've tried -map_metadata 0:g:0 and a few other variations.