Sensoray 812 Windows - Manual (Page 21)

strmidx
channel index (0-7).
bDecomp
TRUE-add decompressor filter, FALSE-do not add decompressor filter. Adding decompressor
is recommended and may result in smoother video preview. Default is TRUE.
renderer
Directshow renderer filter to use.
MID812_VMR9, MID812_VMR7, MID812_DSHOW_LEGACY(not recommended).
Returns
0 on success, negative value if error (see mid812types.h for error codes list).
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