## 5 Conclusions  
This article extensively explores the current state of Virtual Production (VPX), with a specific emphasis on the implementation of real-time rendering game engines. While acknowledging that this field requires more extensive documentation, most available resources are provided by Epic Games for their Unreal Engine. Despite this, Epic Games remains at the forefront, pushing technological boundaries to revolutionize filmmaking. This review reveals that virtual production can be categorized into three main fields: Visualization, Chroma Virtual Production, and LED Virtual Production. In the Visualization field, seven subtypes (Pitchviz, Shotviz, Previz, Virtual Scouting, Techviz, Stuntviz, and Postviz) serve specific purposes within the film production process. Chroma Virtual Production is divided into Real-time Chroma and Post-produced Chroma, each contributing to various stages from pre-production to post-production. LED Virtual Production, representing a crucial facet, utilizes LED screens to create realistic, immersive environments, enhancing performances and framing during shooting. Regardless of subtype or field, all VPX forms must deliver imagery or video content, aiding in planning, guiding in-camera VFX, or contributing to the final post-produced result. Bringing VEX from post-production to pre-production emerges as a crucial aspect of effective virtual production. VPX has created visually stunning experiences, fostering global collaborations, transcending geographical boundaries, and harnessing diverse talent. It offers benefits such as cost-effectiveness and flexibility, revolutionizing film production pipelines, schedules, and costs. The interviewees emphasized the importance of proper planning and time dedication to VFX development for effective VPX utilization. In Spain, companies like El Ranchito, Orca Studios, and MR Factory, along with independent filmmakers like Edu Martin, have embraced virtual production, implementing VPX pipelines to enhance the filmmaking process. This has resulted in more efficient workflows, enhanced creative possibilities, and cost savings. VPX's evolution has transformed the film industry, enabling real-time creative decisions, efficient shooting in multiple locations, and cost savings. Directors, cast, and crew benefit from real-time results, reduced reliance on physical locations, and adaptability to restrictions. Integrating real and virtual elements enhances the visual experience for audiences and opens new storytelling possibilities. The future of virtual production holds immense potential, and as technologies evolve, further advancements can be expected, pushing the boundaries of visual storytelling. The continued collaboration between filmmakers, technologists, and content creators is essential for unlocking the full potential of virtual production in future creative endeavors. The primary objective of implementing VPX is to enhance storytelling and contribute to time and cost reduction in specific projects, with the virtual production ecosystem rapidly advancing toward becoming the norm in filmmaking. By embracing virtual production techniques, filmmakers can create immersive experiences, transcend geographical boundaries, and foster more creative and collaborative film productions. As the virtual production industry evolves, a culture of knowledge exchange and continual learning will be crucial to fully unlock its transformative power for future creative endeavors. In conclusion, looking towards the future, the potential of virtual production to further revolutionize the film industry, especially within the Spanish independent sector, is substantial. As technology progresses, virtual production is expected to become increasingly accessible and versatile, offering filmmakers unparalleled creative freedom and operational efficiency. This trend portends a promising future for cinematic storytelling, where the integration of technology and artistic innovation leads to the emergence of groundbreaking cinematic experiences.