Microsoft KB Archive/97701

= VidEdit: Indeo Supports 24-Bit Color Only =

Article ID: 97701

Article Last Modified on 9/30/2003

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APPLIES TO


 * Microsoft Windows Sound System 1.0

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This article was previously published under Q97701



SUMMARY
When you change the color depth of a Microsoft Video for Windows AVI file using the Intel Indeo compression scheme in VidEdit, attempting to save these changes will cause unexpected results.

Specifically, if you choose to change the color depth to 8-bit or 16-bit color, these changes will be ignored when saving the edited file. The Intel Indeo compression scheme supports 24-bit color only. This is true not only when capturing (which is evident by the lack of a color depth option in the Video Format dialog box), but also when using the VidEdit utility.

Workaround
The workaround to convert an AVI file that uses the Intel Indeo compression scheme to a color depth other than 24 bit is to apply a different compression scheme such as Microsoft Video 1 to the file. It is important to note that this will cause a degradation of the quality of the video sequence and prevent the use of hardware assisted playback (if the Action Media II board is present in the system).

Steps to Reproduce Problem

 * 1) Open an AVI file that utilizes the Intel Indeo compression scheme in VidEdit.
 * 2) From the Video menu, choose Video Format. Note that the current color depth is 24 bit.
 * 3) Change the video format to 8-bit or 16-bit color.
 * 4) From the File menu, choose Save.
 * 5) After the save process is complete, choose the Video Format command under the Video menu. Note that the color depth is still set to 24 bit.

Changes other than color depth that are made to the AVI file will be retained however. This includes such attributes as frame rate and audio sampling rate.

A discussion about the Intel Indeo compressor always producing 24-bit sequences is documented on page 3-43 of the &quot;Microsoft Video for Windows User's Guide.&quot;

Intel Indeo is manufactured by Intel, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Additional query words: 1.00 Indeo Intel

Keywords: KB97701

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