Sven Baars <sven.wine at gmail.com> wrote: > @@ -500,6 +506,8 @@ static ULONG WINAPI mfbytestream_Release(IMFByteStream *iface) > > if (!ref) > { > + if (This->attributes) > + IUnknown_Release((IUnknown*)This->attributes); Probably this should be 'IMFAttributes_Release(attributes);' instead. -- Dmitry.