I avoid av1 downloads when possible because I don’t want to have to figure out how to disable film grain synthesis and then deal with whatever damage that causes to apparent quality on a video that was encoded with it in mind. Like I just don’t want any encoding that supports that, if I can stay away from it.

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coppsilgold 8 hours ago | parent | next [-]

In MPV it's just "F1 vf toggle format:film-grain=no" in the input config. And I prefer AV1 because of this, almost everything looks better without that noise.

You can also include "vf=format:film-grain=no" in the config itself to start with no film grain by default.

	▲	phantasmish 8 hours ago \| parent [-]
		I watch almost everything in Infuse on Apple TV or in my browser, though.

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adgjlsfhk1 8 hours ago | parent | prev | next [-]

What's wrong with film grain synthesis? Most film grain in modern films is "fake" anyway (The modern VFX pipeline first removes grain, then adds effects, and lastly re-adds fake grain), so instead of forcing the codec to try to compress lots of noise (and end up blurring lots of it away), we can just have the codec encode the noisless version and put the noise on after.

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phantasmish 7 hours ago | parent [-]

I watch a lot of stuff from the first 110ish years of cinema. For the most recent 25, and especially 15… yeah I dunno, maybe, but easier to just avoid it.

I do sometimes end up with av1 for streaming-only stuff, but most of that looks like shit anyway, so some (more) digital smudging isn’t going to make it much worse.

	▲	adgjlsfhk1 7 hours ago \| parent [-]
		Even for pre-digital era movies, you want film grain. You just want it done right (which not many places do to be fair). The problem you see with AV1 streaming isn't the film grain synthesis; it's the bitrate. Netflix is using film grain synthesis to save bandwidth (e.g. 2-5mbps for 1080p, ~20mbps for 4k), 4k bluray is closer to 100mbps. If the AV1+FGS is given anywhere close to comparable bitrate to other codecs (especially if it's encoding from a non-compressed source like a high res film scan), it will absolutely demolish a codec that doesn't have FGS on both bitrate and detail. The tech is just getting a bad rap because Netflix is aiming for minimal cost to deliver good enough rather than maximal quality.

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Wowfunhappy 8 hours ago | parent | prev [-]

With HEVC you just don't have the option to disable film grain because it's burned into the video stream.

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phantasmish 8 hours ago | parent [-]

I’m not looking to disable film grain, if it’s part of the source.

	▲	Mashimo 4 hours ago \| parent [-]
		Does AV1 add it if it's not part of the source?