Apsync problem on win7-32bit PC

I am enjoying to control my drone with Apsncy mode of Mission Planner. But I got the following problem. The Apsync mode doesn’t work on my win7-32bit PC, even though it work well on my win10-64bit PC. Error screen is attached with this mail. Please advice me what is problem on win7-32bit PC.

The current shipped version of gstreamer only supports 64bit windows. As the use of 32bit windows is not very limited.