Hmm. I must have left webp out of the build too. I saw that the webp
documentation (in plugins) said "fix" and that was what made me think broken,
but my build looks like it's missing that module. Not a big deal for this
testing phase as I can use TIF for lossless.
Thanks for the tip on -attrib vs -iconfig, that did the trick! Quite happy with
the performance and this got me up and running!
>webp should be built in if it was found at build time. What do you mean by
>"broken"? Does it report webp support ("oiiotool --help", look at bottom) but
>it doesn't seem to work, or do you suspect you didn't build with webp support
>at all?
>4:4:4 -- you were close! --iconfig is configuration hints for input. For
>output, you just need to set a regular metadata output. So I think this would
>work
>
>
> oiiotool ... --attrib "jpeg:subsampling" "4:4:4" out.jpg
>
>
>> On May 6, 2020, at 8:47 AM, Ritchie, Andrew C <aritchie at usgs.gov> wrote:
>>
>> Hi oiio devs,
>>
>> I'm exploring oiio as an image toolchain preprocessing component in our
>> Structure-from-motion workflow (raw/dng to tiff/jpeg/WebP?). I compiled on
>> Win10 (static) and had pretty decent luck all things considered. Python
>> wouldn't build and I was impatient to test, so I killed it, and I'm confused
>> if WebP is broken or if I need to specify it separately, but I like the
>> performance so far (faster than DarkTable for raw convert with comparable
>> results).
>>
>> I'm able to do most of what I need just throwing oiiotool into
>> batch/powershell but I couldn't figure out how to tell oiiotool to use 4:4:4
>> chroma subsampling (was always outputting 4:2:0 I believe). Also didn't see
>> any info re whether/when the DCT was fast integer, integer or float. Any
>> possibility to shed light on these? I tried using -iconfig jpeg:subsampling
>> "4:4:4" in all the positions I could think of, but wasn't sure if I am even
>> calling it right. Would appreciate any hints.
>>
>> /Andy
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