ffmpeg -f image2 -vcodec mjpeg -i numbered/img%d.jpg output.mp4
ffmpeg version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers
  built on Jun 12 2012 16:52:09 with gcc 4.6.3
*** 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 'numbered/img%d.jpg':
  Duration: 00:00:01.32, start: 0.000000, bitrate: N/A
    Stream #0.0: Video: mjpeg, yuvj422p, 1920x1280, 25 fps, 25 tbr, 25 tbn, 25 tbc
Incompatible pixel format 'yuvj422p' for codec 'mpeg4', auto-selecting format 'yuv420p'
[buffer @ 0x176d160] w:1920 h:1280 pixfmt:yuvj422p
[avsink @ 0x176c5e0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
[scale @ 0x1775220] w:1920 h:1280 fmt:yuvj422p -> w:1920 h:1280 fmt:yuv420p flags:0x4
Output #0, mp4, to 'output.mp4':
  Metadata:
    encoder         : Lavf53.21.0
    Stream #0.0: Video: mpeg4, yuv420p, 1920x1280, q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press ctrl-c to stop encoding
[buffer @ 0x176d160] Changing frame properties on the fly is not supported.
    Last message repeated 31 times
frame=    1 fps=  0 q=5.9 Lsize=      34kB time=0.04 bitrate=6912.0kbits/s
video:33kB audio:0kB global headers:0kB muxing overhead 2.309059%
andy@andy-quiet:~/Pictures/Kosnix-ZLamp/Z-LampAnimate1$
andy@andy-quiet:~/Pictures/Kosnix-ZLamp/Z-LampAnimate1$
andy@andy-quiet:~/Pictures/Kosnix-ZLamp/Z-LampAnimate1$ ls -lh
total 15M
drwxrwxr-x 2 andy andy 4.0K Jun 18 17:44 Archive
-rw-r--r-- 1 andy andy  15M Jun 18 17:21 Archive.zip
-rwxrwxr-x 1 andy andy  826 Jun 18 18:55 makevid.sh
drwxrwxr-x 2 andy andy 4.0K Jun 18 19:05 numbered
-rw-rw-r-- 1 andy andy  34K Jun 18 20:05 output.mp4
-rwxrwxr-x 1 andy andy 1.5K Jun 18 19:05 renumber.sh