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11-07-2023, 04:23 PM | #16 |
null operator (he/him)
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The .ORIGINAL_EPUB is not created if you edit the EPUB, or annotate it, or use the Embed metadata tool on it etc. It is only created by like-for-like conversions, Polish and Modify EPUB (I think) and they are the only tools that use .ORIGINAL_EPUB format, if it exists.
If I have an .EPUB and I edit and save it with the calibre book editor I don't get an .ORIGINAL_EPUB format file. And if I have both an .EPUB and an .ORIGINAL_EPUB the editor wont even 'see' the latter. On the rare occasion I do an EPUB->EPUB conversion, providing the conversion produces a satisfactory result I remove the .ORIGINAL_EPUB. And, because my usage of Polish or Modify is formulaic, I don't have them create .ORIGINAL_EPUBs. I used to keep downloaded originals in a separate set of folders, I now keep them in the calibre library book data folders - with their original file names, and any DRM artefacts etc. BR Last edited by BetterRed; 11-07-2023 at 04:41 PM. |
11-20-2023, 01:38 AM | #17 |
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Yeah I basically just wanted to simplify the process of dealing with original files.
I can see that my method of converting epub to epub is probably not the best, I am only using it as a workaround to avoid having to deal with separate folders in calibre or externally. The tweak to disable the creation of .ORIGINAL_EPUB is tangential to that issue. I assume there's an intended reason for .ORIGINAL_EPUB to exist in the first place and therefore I would like to retain the file. I was thinking that, when .ORIGINAL_EPUB exists, it doesn't seem that it should be deleted. Since it is retained, I thought it was intended to be used as an archive. But as you have used it, it is more like a temporary file that enables you to "undo" a file modification. In any case, it should be more clear that when more than one epub to epub file modification conversion is done, the .ORIGINAL_EPUB will be used. The unclear gui prompt in the Conversion menu says EPUB -> EPUB, which mentions nothing about .ORIGINAL_EPUB. But, I don't know if that warrants any changes, since it's a niche problem with an unclear solution. Idk how archiving before conversion is meant to be done, but maybe it's not intended to be using .ORIGINAL_EPUB. I'd be happy with any way to save copy of original files whenever I do conversions. --- I haven't really looked into what epub to epub conversion is doing to the file, or that polish or modify existed. I'll definitely look into that! Last edited by arpeggioaccele; 11-20-2023 at 01:47 AM. |
11-20-2023, 04:19 AM | #18 |
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11-20-2023, 08:51 AM | #19 |
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What I would rather have happen is that the original_epub is created and not used at all. I can restore it if I want it used.
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11-20-2023, 12:19 PM | #20 |
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I agree. If original_epub does not exist, create it first, then make changes to epub. If original_epub exists, make changes to epub, and do not touch original_epub.
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11-27-2023, 04:13 AM | #21 |
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That makes sense. It does seem useful when I want to test out various different conversion options, as the EPUB file is overwritten each time. Maybe the problem is that it is unclear from anywhere but tweaks that original_EPUB will be used as the conversion source.
I think my specific issue was that original_EPUB is also used when going from one source to a different source too, which is not described in the Tweaks description. When going from EPUB to PDF, if original_EPUB is present then it will be used. Even if I were to use original_EPUB only temporarily only for testing conversions, I would have to keep replicating the same settings twice to get the EPUB and PDF outputs. Right now, I am doing the original to EPUB conversion, using the editor on the EPUB file (which does not recognize the original_EPUB file) to replace the publisher's CSS, then EPUB to PDF for inverted colors. It was simpler to input all the settings once, not twice. Perhaps there is a simpler workflow I am unaware of though. Last edited by arpeggioaccele; 12-06-2023 at 12:19 AM. |
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