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Today I learned that AV1 encoding offers no value to consumers
| https://imgur.com/a/o2g8xYK | 10/13/25 |
| peeface | 10/13/25 |
| https://imgur.com/a/o2g8xYK | 10/13/25 |
| https://imgur.com/a/o2g8xYK | 10/13/25 |
| peeface | 10/13/25 |
| https://imgur.com/a/o2g8xYK | 10/14/25 |
| https://imgur.com/a/o2g8xYK | 10/13/25 |
Poast new message in this thread
Date: October 13th, 2025 11:38 PM Author: https://imgur.com/a/o2g8xYK So it turns out that what really fucks HEVC encoders is film grain. The algorithm is forced to preserve. That's why a good HEVC copy of Lawrence of Arabia takes up about 100gb of disk space. Film grain is totally random, so you can't use conventional compression algorithms to capture it accurately.
AV1 is tuned to address this specific problem. Somehow it nukes the film grain problem. It doesn't do shit else.
MOREOVER you can't use it. You can get a GPU that does AV1 encoding, but it can't do film grain any better than AV1. To do that requires some heavy compute power that's for professionals only. They added these shit encoders to consumer chips as a marketing gimmick. Moreover Apple won't take the bait. The media engine on the M4 doesn't support AV1 encoding |
Date: October 13th, 2025 11:45 PM Author: peeface what does this mean: "You can get a GPU that does AV1 encoding, but it can't do film grain any better than AV1. "
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Date: October 13th, 2025 11:49 PM Author: https://imgur.com/a/o2g8xYK That's a typo. I meant to say AV1 on your home PC can't do film grain better than HEVC. (http://www.autoadmit.com/thread.php?thread_id=5786258&forum_id=2...id#49347690) |
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Date: October 13th, 2025 11:47 PM Author: https://imgur.com/a/o2g8xYK Look at this shit:
https://netflixtechblog.com/av1-scale-film-grain-synthesis-the-awakening-ee09cfdff40b
So the computer that does the compression has to analyze the "parameters" of the film grain in a video file, then it has to encode these "parameters" so that a Roku with an AV1 decoder can produce FAKE FILM GRAIN that looks authentic. Imagine you're Stanley Kubrick watching Barry Lyndon in 8k with FAKE FILM GRAIN |
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Date: October 13th, 2025 11:57 PM Author: peeface tbh i prefer the examples here without the fake film grain preserved. it is just ugly RBG noise not classy 35mm grain.
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Date: October 14th, 2025 12:01 AM Author: https://imgur.com/a/o2g8xYK Absolutely. They didn't dare put up HEVC images for comparison either. (http://www.autoadmit.com/thread.php?thread_id=5786258&forum_id=2...id#49347699) |
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Date: October 13th, 2025 11:55 PM Author: https://imgur.com/a/o2g8xYK The synthesized grain looks like ass. It looks like color noise from a digital sensor:
https://i.supaimg.com/5e928650-3437-4a16-bf3d-1e0bd64fe234.jpg
Netflix and YouTube are only doing this to save hard drive space not flame. It saves them money. There's no benefit to the consumer |