RECORDTABWRITE Field - ulParm1

ulParm1 (ULONG)

Data record specific data. This field can contain one of the following flags on an MMIOM_MULTITRACKWRITE message:

MMIO_IS_KEY_FRAME

The data record is a key or reference video frame.
MMIO_IS_PALETTE
The data record contains a video palette. This data record is not considered a video frame.

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