QuickTime is a proprietary multimedia container format developed by Apple. It can wrap video, audio and other bitstreams, but it lacks serious metadata support. QuickTime is not recommended for long-term preservation, but widely adopted.
The FFmpeg tool can help you to convert almost any audio and video file from the command line. It is free to use, and is available for Windows, Linux and Mac operating systems. However, before depositing audiovisual material in the DANS Archive, please always contact DANS for discussion on the available formats/containers and possible migrations.
Because it has limitations, QuickTime is a DANS non-preferred container format for Video.