4k enhance

Seeking an expert to upscale 10 videos to pristine 4K quality. Sources range from 5 minutes to 1 hour. Deliverables must exhibit vivid, lifelike clarity, stabilized motion, refined color grading, noise reduction, and optimized bitrate without artifacts. Preference for proven upscaling workflows, AI-enhancement tools, and efficient render settings to preserve detail and natural motion. Please include estimated timeline, revision policy, and final file formats. Professionalism and attention to visual fidelity required.