It is possible to mix 4K and 1080p video footage in the same project. When working with 4K footage, downscaling it can provide the ability to crop and reframe the video after the fact, which can be beneficial. However, if the 1080p footage is of a high enough bitrate, it may make more sense to upscale that footage to 4K. When mixing 1080p and 4K footage on the same timeline, it is possible to scale the 4K source clips to fit the HD timeline. Additionally, it is possible to connect dual 4K and 1080p monitors seamlessly by adjusting the resolution settings on each monitor. It is also possible to mix 4K and 1080p footage in the same video project, and even use them together in the same timeline. When working with mixed resolutions, it is important to consider the aspect ratio and resolution of the footage and adjust accordingly.