The following link provides a zip file containing the AV Letters database. This version was recorded by Dr. Iain Matthews on 12/05/1998 at the University of East Anglia. This is made available free of charge on condition it is used only for research and non-profit purposes.
AV Letters.zip (68 MB)
You are requested to use the following reference in the publication of any research that uses the database:
I. Matthews, T.Cootes, J. Bangham, S. Cox, and R. Harvey. Extraction of visual features for lipreading. IEEE Trans. on Pattern Analysis and Machine Vision, vol. 24, no. 2, pp. 198-213, 2002.
This is provided without warranty or support.