The trade-off for this compression was often a severe loss of visual fidelity. "Extra quality" during this era usually meant a resolution of 640x480 pixels or 720x480 pixels—a far cry from today's 4K and 8K standards, but highly optimized for the standard-definition CRT monitors and early LCD screens of the period.
If you are reading this article, you have likely encountered the keyword phrase sodopen604 500 sex 20060504avi extra quality in a file-sharing or online forum context. At first glance, it appears to be the file name of an adult video, but it is actually a specific reference to a famous and highly unusual Japanese adult video (AV) production.