ffmpeg Lanczos 视频放大技巧:使用 libx264 + Lanczos 缩放器将视频提升至更高分辨率(如 480p→540p、480p→1080p),并集成了静态 ffmpeg。
Video upscale via ffmpeg ... -vf scale=W:H:flags=lanczos + libx264 -crf 18.
Static ffmpeg binary lives in ./ffmpeg/ffmpeg after install (no apt needed).
Source: /home/node/.openclaw/workspace/skills/xeonupscale/
GitHub: https://github.com/Wray151/xeonupscale
bash
cd /home/node/.openclaw/workspace/skills/xeonupscale
./upscale.sh in.mp4 540p # → in_960x540.mp4
./upscale.sh in.mp4 1080p out.mp4
./upscale.sh in.mp4 1920x1080 # 自定义分辨率
"syntax OK": 540p / 720p / 1080p / 1440p / 2160p|4k,或直接 WxH。