Hi,

We have detailed documentation on how to import scenes and make scenes in Aximmetry Composer here: https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/obtaining-graphics-and-virtual-assets/creating-content/creating-content-in-aximmetry-se/introduction/

We suggest you export your scene in FBX format from Blender. However, if the scene has animation, then you should use the COLLADA (.dae) format. More on supported formats here: https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/obtaining-graphics-and-virtual-assets/introduction-to-obtaining-graphics-and-virtual-assets/

In Aximmetry's Flow Editor still images use the video pin data type. Because of this, videos and images are interchangeable in Aximmetry and you can easily use a video as a texture of a shader.
For example, you can connect a Video Player module to the Basic shader's Color Map texture:

If you have a simple scene then you could use the [Common]:Shaders\Standard\Basic.xshad shader for the virtual screen. If you have PBR scene and you want to have an emissive virtual screen, then you could use the [Common]:Shaders\PBR\PBR_IBL_Norm_Emiss.xshad shader.

Warmest regards,