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The original was posted on /r/datahoarder by /u/SwingDingeling on 2025-06-23 16:22:07+00:00.
I tested this so many times:
A UHD (aka 4K, but UHD is the correct term) gets released. I download it and get let's say a 18k bitrate vp9 video.
I then download the video about a day later, get supposedly the exact same version, but the bitrate is at 25k now. At first I thought they replace the OG vp9 version with a better one. I then compared the quality many times and always got the same shocking result: OG version is better.
YouTube replaces the best version you can get (av1 is more efficient, but quality is about the same as vp9 version 2) with a file that's up to 30% bigger, yet has 10% worse quality.
How can we get them to fix this? Why are they doing this?