Resolution Scaling
The core function is the ability to upscale footage from lower resolutions (480p or 720p) to 4K or higher. Look for tools that offer intelligent deblocking and super-resolution models specifically designed to maintain edge definition while removing artifacts.
Frame Interpolation
This feature analyzes the motion between frames and generates new frames to bridge the gap. It is essential for turning choppy, low-frame-rate footage into fluid, modern-looking video. Look for software that offers configurable settings to prevent the "soap opera effect" if you prefer a more natural look.
Stabilization and De-shaking
Handheld footage often suffers from jitter. High-quality AI tools include stabilization algorithms that analyze camera movement and perform digital cropping or warping to smooth out shaky shots without significantly degrading the visual quality.
Face Refinement
Because faces are the most recognizable parts of a video, standard upscaling can sometimes make them look distorted. Specialized face recovery models, found in tools like Topaz Video AI or HitPaw Video Enhancer, focus specifically on reconstructing features like eyes, skin texture, and hair with high fidelity.