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xuzhengyi1995 / Manga_downloader

A Manga download framework using selenium.
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Image resolution #118

Open mike18400 opened 1 year ago

mike18400 commented 1 year ago

20221206_180949 I downloaded some volumes and with the. Bw downloader its shows a smaller image in comparison to a private method that an scalation group uses ..

So im not sure if the browser its ripping the whole quality or its just me

xuzhengyi1995 commented 1 year ago

The chromium one will download the image in its original resolution. You can see the bigger image is edited by photoshop and maybe scaled up or from another image source.

Here is two images from a manga on BW, one is downloaded image and the other one is original encrypted image, you can see that the only difference is a round up because of the encryption method.

Encrypted original image

image

Saved image

image

mike18400 commented 1 year ago

At first i also thought that but then i purchase the same volume at kobo dedrm the volume and the images appear as the same resolution as the one with the private method

In fact all my volumes without drm shows the photshop thing but overall the show bigger resolution than the ones downloaded with chromium. Even though they are the same volume

mike18400 commented 1 year ago

Oh forgot to mention i did not edit the volumes with photoshop or anything the just appear like that after dedrm the file im using epubor ultimate just mention it as reference

xuzhengyi1995 commented 1 year ago

Maybe there are some different source that have a better resolution (like desktop app or mobile app), the browser could not get a better image than the web page downloaded form the server, for the BW online reader I'm pretty sure that the image downloaded is the original image resolution the server returned to the web page, but I could not make sure that the BW will give a better resolution than this anywhere else.

xuzhengyi1995 commented 1 year ago

Oh forgot to mention i did not edit the volumes with photoshop or anything the just appear like that after dedrm the file im using epubor ultimate just mention it as reference

Then I think maybe they did not give the original image in the online reader, the dedrm one is the real original file.

mike18400 commented 1 year ago

Hmmm how curious issue didnt expect this to happen

Well gues in the future will see what happens thx for answering