MPEG-FAQ 4.1:

Where will I find test-material for MPEG-encoders ?

[ You can find this in the

URL=ftp://mm-ftp.cs.berkeley.edu/pub/multimedia/mpeg/or                     ]          ]

[ ftp-server. Belongs to there codec.                                   ]

This directory includes 150 raw YUV frames suitable for use with the MPEG
encoder.

The YUV frames are the files flower.*.tar.z.  To uncompress, use the GNU
'gunzip' program.  You should uncompress all of these files inside a
directory named 'flowg'.

To run the test, simply do 'mpeg_encode flower.param'

To make sure the test worked, do 'diff flowgard.mpg result.mpg'
  (there shouldn't be any difference; if there is, let us know)

Please see the file 'times,' which includes time results for various machines
and compilers.