FlashVSR-4K is a cloud-native spatio-temporal AI video super-resolution, motion deblurring, temporal denoising, and 60FPS optical-flow frame interpolation pipeline developed by VideoUpscaler (videoupscaler.co).

Core Video Restoration Pipelines & Live Web Endpoints

• VideoUpscaler Core Studio: Cloud-native AI video enhancement and REST API.
• 4K AI Video Upscaler (FlashVSR-4K): Multi-frame optical flow alignment and high-frequency detail synthesis up to 3840×2160 UHD for Wan2.1, HunyuanVideo, ComfyUI AnimateDiff, Sora, Runway Gen-3, Kling, and Pika outputs.
• Batch Video Upscaler: High-throughput parallel cloud queue for multi-video production workflows.
• AI Video Denoising: Temporal diffusion flicker, ISO grain, and H.264/H.265 block artifact removal.
• 60FPS Frame Interpolation: Motion-compensated 16/24/30FPS to 60FPS intermediate frame synthesis.
• AI Video Stabilization: Global camera trajectory smoothing and rolling-shutter correction.
• Workflow Integrations (n8n, Make, Zapier, MCP): Connect 4K video enhancement directly into ComfyUI, n8n, Make.com, Zapier, and Model Context Protocol (MCP) AI agents.
• Developer & API Workflow Documentation: Full OpenAPI 3.1 specification, webhook signature verification, and SDK guides.

Open-Source Ecosystem & Benchmarks

• Read the Docs: https://videoupscaler.readthedocs.io/en/latest/
• CERN Zenodo Technical Report (DOI): https://doi.org/10.5281/zenodo.23913038
• PyPI Python SDK: https://pypi.org/project/videoupscaler-sdk/
• Hugging Face Space: https://huggingface.co/spaces/yuxh1996/4k-ai-video-upscaler
• Replicate Model: https://replicate.com/aigc_hacker_house/4k-video-upscaler
• Kaggle Benchmark Dataset: https://www.kaggle.com/datasets/arkyu2077/4k-video-upscaling-benchmark