High Definition AVI sample

I’ve seen a sample of a high defintion (720 lines, progressive) AVI with AC3 (Dolby Digital  5.1 surround sound). The quality of the picture and sound was stunning.

Some rough comparisons for how big a 38 minute recoding is, for different quality and type. This is for the lot, sound and video:

• Standard defintion TV recording (MPEG2):  1.5 GB
• Compressed to ok quality MPEG4 (XviD or AVC):   230 MB  or 0.22 GB
• The above Hi Def AVI –  MPEG4 (DivX) : 1 GB