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Today I learned that YouTube is deliberately crippling Firefox on Asahi Linux. It will give you lowered video resolutions. If you just replace "aarch64" with "x86_64" in the UA, suddenly you get 4K and everything.
They literally have a test for "is ARM", and if so, they consider your system has garbage performance and cripple the available formats/codecs. I checked the code.
Logic: Quality 1080 by default. If your machine has 2 or fewer cores, quality 480. If anything ARM, quality 240. Yes, Google thinks all ARM machines are 5 times worse than Intel machines, even if you have 20 cores or something.
Why does this not affect Chromium? **Because chromium on aarch64 pretends to be x86_64**
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`
🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️
Welp, guess I'm shipping a user agent override for Firefox on Fedora to pretend to be x86.
**EDIT**: The plot thickens. Pretending to be ChromeOS aarch64 *still gets 4K*. Specifically: `Mozilla/5.0 (X11; CrOS aarch64 10452.96.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36` still works.
Indeed, but google can just transmit different javascript to different users/browsers/regions etc (that’s why browsers have useragents, so websites can improve browser compatibility according to the circumstances). It can be decided on a whim and noone would know except some coders at google
Except everyone would know. Multiple people across the globe testing different browsers have looked a at the same JavaScript code that is being sent to the browser. The check is there, client-side, google isn’t sending a different JavaScript payload for different browsers. Like you said, they could, but that’s not how it currently functions
Indeed, but google can just transmit different javascript to different users/browsers/regions etc (that’s why browsers have useragents, so websites can improve browser compatibility according to the circumstances). It can be decided on a whim and noone would know except some coders at google
Except everyone would know. Multiple people across the globe testing different browsers have looked a at the same JavaScript code that is being sent to the browser. The check is there, client-side, google isn’t sending a different JavaScript payload for different browsers. Like you said, they could, but that’s not how it currently functions