During the digitisation of legacy archive material at ORF, the Austrian public-service broadcaster, hundreds of thousands of video cassettes will need to be converted to digital file formats over the next decade. To guarantee the sustainable usability of this file-based material, thoroughly-planned guidelines for Quality Control (QC) have to be worked out. Although some QC tools already exist, their detailed parameter settings as well as the exact requirements to test against, have not yet been determined and will be the main focus of the EBU QC group. Besides giving some details of a migration project at ORF, this article discusses different proposals concerning the understanding of QC from an archival viewpoint, along with file format collateral effects and, finally, some data-tape library issues.