pngImageSequenceToMOV

ffmpeg -f image2 -i momentum*.png -r 15.0 -qscale 1 momentum.mov
WARNING: gnome-keyring:: couldn't connect to: /run/user/gabriel/keyring-4RYex5/pkcs11: No such file or directory
ffmpeg version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav developers
  built on Mar 30 2013 22:20:06 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Input #0, image2, from 'momentum0072.png':
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
    Stream #0.0: Video: png, rgb48be, 76x43, 25 tbr, 25 tbn, 25 tbc
Segmentation fault