Is it intended, that when I open the image converter on a jpg-file from source lister and only change jpg quality (no resizing, no rotation), like so:
That it will not write an altered image back to the source lister? I need to enable resizing to get the converter write back the image.
If I tick "Write converted images to destination folder" and just change jpg quality (again no resize, no rotation) it creates an image with lower quality in destination, so why not in source as well?
Is there any specific reason behind that? This behaviour is the reason I use nconvert.exe to reduce jpg quality in place, but would rather rely on DO only.
Using internal commands it's the same - this does nothing
Image CONVERT=jpg QUALITY 80 REPLACE HERE
while
Image CONVERT=jpg QUALITY 80 REPLACE
does replace the image in destination
By default, the image converter tries to keep (most) JPEG operations lossless where possible.
If you add the NOLOSSLESS to the command (e.g. Image NOLOSSLESS) then it will enable recompression without performing any other changes. (Note that adding that argument will also cause any JPEG rotations to be lossy, even if they could be done without recompression and the resultant image quality loss, so you may want to create a separate button rather than change your main one. Or you could make the button only add the NOLOSSLESS argument is shift is held down, or similar.)
Ok! o)
"Image CONVERT=jpg QUALITY 80 REPLACE HERE NOLOSSLESS" does the trick!
There's no way to alter the built in "Convert Image.." context menu entry to do NOLOSSLESS if shift is pressed, right?
At least I did not find it anywhere in the context menu section of any file type, it seems hard coded or something.
No big issue, just want to make sure I don't miss something.. o)
Yes I did, but I looked into file types and then the wrong file type group.. o)
I was looking at the group "Recognized Images", because that's where I added menu entries in the past.
So you're right, it is not hardcoded, it is in the "Images" file group and adding the @keydown modifier-thing was a piece of cake.. o)
