Comment on In a blind test, audiophiles couldn't tell the difference between audio signals sent through copper wire, a banana, or wet mud

• cogman@lemmy.world ⁨2⁩ ⁨hours⁩ ago

  Blocky artifacts typically appear in low light situations. There will be situations where it might just be blocky due to not having enough bits (high motion scenes) but there are plenty of cases where low light tuning is where you’d end up noticing the blockyness.

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  • Cenzorrll@lemmy.world ⁨2⁩ ⁨hours⁩ ago

    Blocky artifacts are the result of poor bitrates. In streaming services it’s due to over compressing the stream, which is why you see it when part of a scene is still or during dark scenes. It’s due to the service cheaping out and sending UHD video at 720p bitrates.

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    • cogman@lemmy.world ⁨2⁩ ⁨hours⁩ ago

      Look, this is just an incorrect oversimplification of the problem. It’s popular on the internet but it’s just factually incorrect.

      Here’s a thread discussing the exact problem I’m describing

      www.reddit.com/r/AV1/…/av1_in_dark_scenes/

      The issue at play for streaming services is they have a general pipeline for encoding. I mean, it could be described as cheaping out because they don’t have enough QA spot checking and special purposing encodes to make sure the quality isn’t trash. But it’s really not strictly a “not enough bits” problem.

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