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Many "extra quality" endpoints require a mobile User-Agent.
When WebP thumbnails are served via CDN:
Many video platforms generate WebP thumbnails to save bandwidth. If the converter fails: yvm nippy search videos not working webp extra quality
Result: Thumbnails show broken images or placeholders, making the search interface appear broken.
When you select Extra Quality, the script attempts to bypass compressed streams (H.264, 720p/1080p) and request the lossless or near-lossless source file. Many hosts have started serving these high-bitrate files as WebP (a still image format) or WebM (video) but with corrupted headers. Many "extra quality" endpoints require a mobile User-Agent
Key Insight: If your search function fails and videos show as WebP, the API endpoint YVM/Nippy uses has likely been deprecated.
"Extra Quality" files are large (4GB+). If the connection drops mid-download, the file header gets corrupted and defaults to .webp. Many video platforms generate WebP thumbnails to save
Solution:
If search is completely broken, bypass it entirely: