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#1 2015-03-27 18:34:13
- plg
- Piwigo Team
- Nantes, France, Europe
- 2002-04-05
- 13791
[iOS 2.0] keep original quality
Hello Hoser,
I would like to have an option to keep the original quality, with no compression, no resize.
If I take a screenshot (Home button + power button) then upload it through the app, the screenshot is obviously compressed (I have tried compression 0% and 100%). It seems that the screenshot is converted from PNG to JPEG, I don't know if it's done by the app or by iOS.
In my opinion, there should be no question of "compression" if there is no resize. The resize X% is a bit unexpected: we always resize with a parameter like "max width + max height". I think a better configuration would be:
[] resize before upload
then if you activate the option
[x] resize before upload
maximum width ===[]=== 800 pixels
maximum height ===[]=== 800 pixels
image quality =====[]= 80% (ability to go from 50 to 98)
I don't know if it's possible to do. What do you think?
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#2 2015-03-28 02:25:29
- Hoser
- Member
- Utah
- 2015-01-14
- 88
Re: [iOS 2.0] keep original quality
I just did a test with taking a screen shot and uploading it:
The image from iPhoto (raw):
Format: png
Size: 493 KB
Image uploaded with compression set to 0% and then downloaded to my computer:
Format: png
Size: 288 KB
Image uploaded with compression set to 100% and then downloaded to my computer:
Format: png
Size: 155 KB
The iOS app converts the image from a jpg (this is the code "UIImageJPEGRepresentation(image)" and I'm surprised that when I downloaded the screenshot from Piwigo it was still in png format -- I think this is because the filename stayed png.
The reason for the JPEG conversion is because iOS devices take jpg images from their camera.
Yeah I agree with the "resize image on upload" and if checked, displaying the option for a max width or height -- it's totally possible to do. I chose not to implement that yet but chose to only put a simple % in.
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