xifangczy/cat-catch

Health v2 · maintenance only

Adoption not part of the score

21548 stars · 1888 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Cat-catch is an open-source browser extension that sniffs and lists media resources (video, audio, images) loaded by the current web page. It includes an M3U8 parser with decryption and merging, cache capture, screen recording, and integration with external downloaders like N_m3u8DL-RE and aria2.

Use cases

• download videos from web pages
• sniff m3u8 streams in the browser
• capture audio and images from a site
• merge HLS segments into mp4
• record live streams or screen video
• find hidden media resources on difficult websites

When to choose

• you want a browser-integrated media sniffer for Chrome, Edge, or Firefox
• you need to parse, decrypt, and merge m3u8/HLS streams without command-line tools
• you want to hook downloads into external tools like N_m3u8DL-RE or aria2
• you need cache capture or screen recording as a fallback when sniffing fails

When to avoid

• you need to bypass DRM-protected video, which the extension cannot record
• you want a headless or server-side downloader rather than a browser extension
• your browser is older than Chromium 93 or Firefox 93
• you require guaranteed legality for downloading copyrighted content - responsibility is on the user

Facets

plugin · maturity active

web-scraping video-processing audio-processing image-processing developer-tools browser-extensions media crawlers web-development browser-extension browser cross-platform resource-sniffer video-downloader m3u8 hls media-capture screen-recording chrome-extension firefox-extension media-downloader

Member repositories

For agents

markdown · JSON · MCP: product_card(name="xifangczy/cat-catch")