Hi, Il 20/01/22 11:41, Rémi Bernon ha scritto: > + ok(hr == S_OK, "MFTEnum returned %x\n", hr); > + ok(count == 1, "got %u\n", count); > + *class_id = class_ids[0]; > + CoTaskMemFree(class_ids); Would it make sense to check that the returned class id matches indeed CLSID_WMADecMediaObject? Giovanni.