When you enable , some hosts serve a high-resolution thumbnail (WebP) instead of the video file. The script mistakenly saves the thumbnail as the video.
: High-quality content often requires significant server-side re-rendering. If you are accessing newly uploaded "extra quality" content, it may be capped at lower resolutions (like 360p or 480p) until processing is complete. Common Fixes for Video Playback yvm nippy search videos not working webp extra quality
Many "extra quality" endpoints require a mobile User-Agent. When you enable , some hosts serve a