Question: Is there a tool that can upscale my old photos and videos to 4K resolution without losing quality?

Let's Enhance is an AI-based image enhancement service that can upscale images to 4K and beyond. It also has filters for HDR, background removal and batch processing, which makes it useful for creative professionals and e-commerce businesses. It's easy to use and requires little setup.

For video, AVCLabs offers a range of tools, including Video Enhancer AI that can upconvert low-resolution video to HD, 4K or even 8K resolution. It also can denoise video, deinterlace it and restore facial details. It's designed for both beginners and pros, and is available online or as a download for Windows and macOS.

TensorPix is a cloud-based service that uses AI to improve video and image quality up to 4K resolution. It has options for noise reduction, detail sharpening and frame rate increase, so you don't need to be an editing expert. The service also offers an AI image generator and background removal tool.

Last, bigmp4 uses large AI models to upscale video to 2K, 4K or 8K resolution and to improve video quality. It also can add video colorization and slow motion. The service offers a variety of pricing options, including a free tier, and supports a range of file formats.