How can I buffer more than two minutes at a time on Youtube? I've just read [https://support.mozilla.org/en-US/que.../1168957], and I tried setting both media.cache_readahead_limit and media.cache_resume_threshold to 999999, but there seems to be no effect. It still stops at two minutes ahead of the current position in the video, and won't buffer more. What's the fix?

That older support thread thread says 9999 -- one less that 10,000 = 4 - 9's. You posted 6 - 9's or one less than a million.

Something to look into.

Sorry, I left some things out, I suppose. I am not entirely sure now where I got the 999999 value from, but I looked through a few pages the other day, trying to figure out what to do. I had initially tried values just a bit higher than the defaults, ten times the defaults, the value of 9999, and finally 999999. None seemed to help.

I may have gotten the 999999 value from a bugzilla page such as [https://bugzilla.mozilla.org/show_bug.cgi?id=1384590], but I am not sure it makes sense even then.