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#Bilibili5 notes

All notes tagged “Bilibili”.

“Almost NOBODY knows this: Lag-free Bilibili Secret Setting”Pinned
How-to guide2 min

The Secret Setting That Fixes Bilibili Buffering

Bilibili buffering overseas? DNS and VPN tricks are a coin toss, because the real problem is the slow CDN node Bilibili assigns you. Install one extension to lock videos onto the fastest node, plus what to use on Android and TV.

繁體中文 / 廣東話 / 简体中文 / English / 日本語 / 한국어

CDNSpeedTest while the speed test is running
How-to guide7 min

How to Join the Bilibili CDN Speed Test

Step-by-step guide: download CDNSpeedTest (Windows / Mac), pass the network check, log in with a QR code, and send the report so the extension can find the fastest Bilibili servers in your country.

繁體中文 / 简体中文 / English / 日本語 / 한국어

Notice on top of the Bilibili player saying the CDN was slow and playback switched to a backup node
Tech share14 min

Detecting CDN Failures in a Bilibili Extension and Falling Back to Backup Nodes

How the extension decides a CDN node is really broken: which errors to ignore, how to detect stalls from currentTime and the forward buffer, why it switches once quietly before asking you, and how it avoids bouncing between nodes. Also covers live streams.

繁體中文 / English

Cover: the Network panel domain changes from upos-hz-mirrorakam.akamaized.net to upos-sz-mirror08ct.bilivideo.com, above the four hook points: __playinfo__, the playurl API, .m4s segments and live streams
Tech share13 min

Rewriting Bilibili's Stream CDN on the Fly from a Chrome Extension's MAIN World

Bilibili's stream URLs arrive through SSR __playinfo__, the playurl API, segment requests and the live API. Using bilibili-cdn-switcher's code, this walks through hooking each path, what gets rewritten, and the traps: one-shot Response bodies, read-only XHR responseText, and speed tests that must bypass your own hooks.

繁體中文 / English

The same 4K video before and after the extension: buffering at 9 KB/s before, 8.8 MB/s after
Tech share11 min

How to Actually Fix Bilibili Buffering for Good

Why popular Bilibili videos play fine overseas while unpopular ones stall: CDN caching and trips back to origin, why the narrowest link sets your speed, why DNS and VPN tricks are hit or miss, and how my extension picks a default node from real tests across 14 Taiwanese ISPs.

繁體中文 / English