Active Palette Mode

Question: How does the Indeo® video palette work in Video for Windows*?

When Windows* is in 8-bit mode, Indeo video by default asserts its own palette. The Indeo video codec does not use the first and last ten entries, which are reserved for Windows; Indeo video uses the middle 236 only. In active palette mode, Indeo video decodes using the full, 256­color palette asserted by the application. When Windows is in 16-bit mode (65,536 colors) or 24-bit mode (16.7 million colors), the Indeo video codec decompresses the video directly into 16- or 24­bit RGB rather than selecting from a palette. See the documents describing the Indeo video palette.

* Legal Information © 1998 Intel Corporation