Tech Support > Microsoft Windows > Drivers > problem exposing IAMVideoCompression on video capture device (AVStream)
problem exposing IAMVideoCompression on video capture device (AVStream)
Posted by Tulup on February 16th, 2007


Hello.

dshow doc says:
using avssamp sample i update KSAUTOMATION_PROPERTIES with support of set
PROPSETID_VIDCAP_VIDEOCOMPRESSION (two of them were implemented:
KSPROPERTY_VIDEOCOMPRESSION_GETINFO and
KSPROPERTY_VIDEOCOMPRESSION_QUALITY).

but user mode code quering IAMVideoCompression still reports me that this
interface is not supported.
the queston is what else could be done to add support of this interface?
Maybe this interface is not exposed because all device formats are not
required compression at all (RGB24)? Please help

-Andrey