On Symbian, QGalleryQueryRequest::setMetaData always returns false and the value is not stored.

The attached test application can be used to reproduce the issue. It sets and reads the "resume position" metadata value of e:
test.mp4 video file (not included, use any dummy video file).

The problem seems to be (at least partially) in QMDEGalleryResultSet::setMetaData function, which doesn't call CommitObjectL (because 'ret' value is always false).