Article ID: 100015
Article Last Modified on 10/10/2003
APPLIES TO
- Microsoft Windows Sound System 1.0
- Microsoft Windows Sound System 1.0a
This article was previously published under Q100015
SUMMARY
When you convert an AVI file from 16-bit RGB or 24-bit RGB to 8-bit PAL using the VidEdit program that ships with Video for Windows, the resulting AVI file may use a color palette that is composed of 256 shades of gray.
MORE INFORMATION
Microsoft Video for Windows contains a "default" palette that consists of 256 shades of gray. When an AVI file is converted from RGB values to 8-bit PAL, if no palette has been specified, VidEdit will use this default palette. This behavior is by design because it is not possible to create a color palette that will match all possible AVI files.
Steps to Reproduce Problem
- Open or switch to VidEdit and open an AVI file that uses 16-bit or 24-bit RGB.
- From the Video menu, choose Video Format and select 8 Bit. Choose the OK button.
- From the File menu, choose Save As and select the Compression Options button.
- If the current Video Compression Method is Indeo, switch to Microsoft Video 1 or Microsoft RLE. This must be done because Indeo supports 24-bit color depth only.
- Choose the OK button and then save the file. The resulting AVI file will use the default 256 gray scale palette.
Solution
If you create a palette from the AVI file, and then apply that palette to the file prior to saving, the resulting 8-bit AVI file will use the created palette rather than the default gray scale palette.
To convert a 16- or 24-bit RGB AVI file to 8-bit PAL using a created palette:
- Open or switch to VidEdit and open a 16-bit or 24-bit RGB AVI file.
- From the Video menu, choose Custom Palette and set the desired attributes for your palette (number of colors, and so on). Choose the OK button.
- Once the palette has been created, choose Paste from the Palette Created dialog box. Choose the All Frames radio button and choose OK.
- From the File menu, choose Save As and select the Compression Options button.
- If the current Video Compression Method is Indeo, switch to Microsoft Video 1 or Microsoft RLE. This must be done because Indeo supports 24-bit color depth only.
- Choose the OK button and then save the file. The resulting AVI file will use the created 8-bit palette.
Keywords: KB100015
