Hello Jorge,
Currently it is not possible to save scene videos in Discovery. You can save images using Scenes to capture model views.
To export a particular scene, switch to the simulation from which you want results and then select Export to 2D Image or Export to 3D Image. A save file dialog prompts for a file name and location to save. Files can be saved in the Glb format.
Please refer this article on Creating Saved Scenes in Ansys Discovery to get more infromation.
Regards,
Devendra