You can work with clips of any resolution in your project. You can process images of differing resolutions in Inferno. The video I/O procedures that you use to input and output clips to and from Inferno using a VTR, as well as capture and assemble EDLs, are not restricted to your project's default resolution. You can input and output clips of another video resolution to and from your project. See Working with Multi-Format Input and Output.
