Correct, ProRes by nature is lossy. Even the top tier option of 444. Even though your eyes may not see it, there's no way of shrinking file size without removing something.
Also people have a tendency to believe a codec is the same across OS platforms and even between softwares on the same OS. Wrong. Each developer has set their own preferences for said codec when implementing them. They also expose only certain options for the user to tweak, sometimes.
There is the codec creator spec, then there are the developer implementations. All those settings people don't like to mess with, well those are there for a reason to control your output. Unfortunately they can be difficult to understand for the layperson so presets are offered by most apps. Guess how well those presets match at the core level. They don't. :)
So the fantasy of finding that one great codec doesn't technically exist because of those variables, but most ignore this information or refuse to believe it's true.
Just saying. ;) David Torno 818.391.6060 --------------------
"The most useless day is that in which we do not laugh" -Charles Field I don't think there is one, but there isn't a lossless ProRes codec that I'm aware of, either.
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