Fine by me.
On Oct 17, 2014, at 12:10 PM, Jonathan Gibbs <[email protected]> wrote: > On Fri, Oct 17, 2014 at 10:26 AM, Larry Gritz <[email protected]> wrote: > That's another possibility I would entertain -- automatically upgrading the > subsampling when a sufficiently high quality is requested. > > This seems too magical to me. Those who are setting subsampling levels are > probably expert users and probably thus want what they are asking for > explicitly. > > I set the default quality for jpeg output (if no "quality" attribute is > found) quite high, 98. I'm also happy to revisit whether that's too much. I > can't say it was a principled reason for that particular value. > > Back when we used 8-bit jpegs in production, they were quality 98, and we > moved over time from 4:2:0 to 4:4:4. When we used "16-bit" jpegs (actually > 12-bits internally) we used 4:4:4 and quality of 75. Some tests determined > that quality of 75 in 16/12-bit looked as good as 98 in 8-bit. > > Anyway, just data points using jpeg images in animation production. > > I'd vote the default to be 4:2:0 since that's what most devices write. Those > who want 4:4:4 are more likely to understand these settings. > > --jono > > -- Larry Gritz [email protected]
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