There is a problem with resume support because QDocumentGallery doesn't seem to provide the correct metadata. If I query the resumePosition of a video, it always returns 0. I also cannot seem to write to resumePosition (or any other attribute for that matter) despite having the right credentials in my .aegis file. I don't know how the stock video player handles this, but I presume it uses Qt. Could be time to file a bug report.