Scrambling copyright ebooks to help troubleshoot problems ??? - Page 12

jackie_w · 11-20-2015, 12:08 PM

@RbnJrg,
A follow-up question... Are .svgs valid in any format other than epub?

I tried to create an AZW3 and KEPUB by calibre-converting your SVG sample epub. Both have empty spaces where some of the SVG images and/or SVG text should be. Both are 'wrong' in different ways. It's hard to know whether the root of the problem is with the AZW3/KEPUB formats, the conversion process or the calibre Viewer or even a combination of all three

RbnJrg · 11-20-2015, 12:15 PM

Quote:

Originally Posted by jackie_w

I've tried it. I think I'd like it better if the word 'SVG' was visible somewhere in there. Because SVGs are so different from jpg/gif/png, there may be some value in making it obvious, at-a-glance, which images are SVG and which aren't.

Can you do that?

Do you mean that instead of the word (and the logo) ePub is the word SVG? Or to add the SVG word to that ePub logo? I can do both of those things but I want to be sure about the option you prefer.

jackie_w · 11-20-2015, 12:21 PM

Quote:

Originally Posted by RbnJrg

Do you mean that instead of the word (and the logo) ePub is the word SVG? Or to add the SVG word to that ePub logo? I can do both of those things but I want to be sure about the option you prefer.

Added, I think.

PeterT · 11-20-2015, 03:03 PM

Quote:

Originally Posted by jackie_w

@RbnJrg,
A follow-up question... Are .svgs valid in any format other than epub?

I tried to create an AZW3 and KEPUB by calibre-converting your SVG sample epub. Both have empty spaces where some of the SVG images and/or SVG text should be. Both are 'wrong' in different ways. It's hard to know whether the root of the problem is with the AZW3/KEPUB formats, the conversion process or the calibre Viewer or even a combination of all three

Some info on kePub support can be found here --> https://github.com/kobolabs/epub-spec

RbnJrg · 11-20-2015, 03:12 PM

Quote:

Originally Posted by jackie_w

@RbnJrg,
A follow-up question... Are .svgs valid in any format other than epub?

I tried to create an AZW3 and KEPUB by calibre-converting your SVG sample epub. Both have empty spaces where some of the SVG images and/or SVG text should be. Both are 'wrong' in different ways. It's hard to know whether the root of the problem is with the AZW3/KEPUB formats, the conversion process or the calibre Viewer or even a combination of all three

Both formats support svg images. However, I found some issues with SVG in other format than "plain svg" (for example, I had problems with "optimized svg" in azw3). I don't know why; maybe a bug in the way Amazon handles svg.

RbnJrg · 11-20-2015, 03:14 PM

Quote:

Originally Posted by jackie_w

Added, I think.

Ok, try this svg and tell me what you think about it:

https://rbnjrg.bitrix24.com/~sxDoq

jackie_w · 11-20-2015, 04:19 PM

Quote:

Originally Posted by RbnJrg

Ok, try this svg and tell me what you think about it:

https://rbnjrg.bitrix24.com/~sxDoq

Well, I see the red SVG caption, but it doesn't appear to maintain it's shape/size as well as your previous version. I really appreciate your efforts but I'm not sure it's worth you spending all your time on this. I think my 'SVG image'-in-a-box is neither pretty nor clever, but it does enough to show an SVG image has been replaced with a dummy. I'm open to improvements but I feel bad if it's taking unreasonable effort to put a proverbial cherry on the top.

jackie_w · 11-20-2015, 04:43 PM

Quote:

Originally Posted by PeterT

Some info on kePub support can be found here --> https://github.com/kobolabs/epub-spec

The info there was a little vague. I tried RbnJrg's SVG sample on my Kobo as a standard epub and as a .kepub.epub (simple rename). It didn't altogether surprise me that the epub looked really good and the kepub was, to be frank, a bit iffy in parts. Some of the SVG images didn't display at all and others were fuzzy, which I thought was precisely what wasn't supposed to happen with SVG.

Re: the epub to kepub calibre conversion, some svg data is getting lost in the process. However, as this project isn't concerned with conversions it's not really relevant to the job in hand.

I also wonder whether any real-life retail kepubs and azw3s actually contain proper SVG images.

RbnJrg · 11-20-2015, 05:16 PM

Quote:

Originally Posted by jackie_w

Well, I see the red SVG caption, but it doesn't appear to maintain it's shape/size as well as your previous version. I really appreciate your efforts but I'm not sure it's worth you spending all your time on this. I think my 'SVG image'-in-a-box is neither pretty nor clever, but it does enough to show an SVG image has been replaced with a dummy. I'm open to improvements but I feel bad if it's taking unreasonable effort to put a proverbial cherry on the top.

No problem Jackie. Try this svg, I think it solve the problem you detected:

https://rbnjrg.bitrix24.com/~Tso8o

EDIT: Also, do an aditional experiment: open the above dummy.svg file with a text editor and replace height="100%" with height="151" and width="100%" with width="448" and save the changes. Use this dummy.svg and compare results.

jackie_w · 11-20-2015, 06:01 PM

Quote:

Originally Posted by RbnJrg

No problem Jackie. Try this svg, I think it solve the problem you detected:

https://rbnjrg.bitrix24.com/~Tso8o

EDIT: Also, do an aditional experiment: open the above dummy.svg file with a text editor and replace height="100%" with height="151" and width="100%" with width="448" and save the changes. Use this dummy.svg and compare results.

This one is definitely better for size/shape.

I also tried the additional experiment. I can't honestly see any difference between the 2 scrambled epubs produced. Is this what you expected?

RbnJrg · 11-20-2015, 06:32 PM

Quote:

Originally Posted by jackie_w

This one is definitely better for size/shape.

Good

Quote:

I also tried the additional experiment. I can't honestly see any difference between the 2 scrambled epubs produced. Is this what you expected?

It should have a slight difference, especially with images whose width is lower than 100%. In those cases, the second option should produce a bit better result. With images whose width is 100%, the first option should be the best. Of course, all that in theory

Maybe our eyes can't capture the difference.

RbnJrg · 11-21-2015, 10:17 AM

Jackie, in case you decide to use that kind of svg images, below you can download svg for azw3 and kepub format:

https://rbnjrg.bitrix24.com/~ykypJ

https://rbnjrg.bitrix24.com/~rqu6Y

jackie_w · 11-21-2015, 10:50 AM

OK. Thanks, Ruben

I've incorporated all 3 ready for the next release.

I'm waiting for BetterRed's and eschwartz's comments on the 0.0.3b version before doing anything else.

BetterRed · 11-22-2015, 04:42 PM

Quote:

Originally Posted by jackie_w

OK. Thanks, Ruben

I've incorporated all 3 ready for the next release.

I'm waiting for BetterRed's and eschwartz's comments on the 0.0.3b version before doing anything else.

@jackie_w - did a few tests on the stand alone 0.0.2 version, seemed OK to me.

Just downloaded the latest - I'll report back before the end of the week.

BR

jackie_w · 11-22-2015, 08:28 PM

Quote:

Originally Posted by BetterRed

@jackie_w - did a few tests on the stand alone 0.0.2 version, seemed OK to me.

Just downloaded the latest - I'll report back before the end of the week.

Thanks

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11-20-2015, 12:08 PM	#166
jackie_w Grand Sorcerer Posts: 6,252 Karma: 16544692 Join Date: Sep 2009 Location: UK Device: ClaraHD, Forma, Libra2, Clara2E, LibraCol, PBTouchHD3	@RbnJrg, A follow-up question... Are .svgs valid in any format other than epub? I tried to create an AZW3 and KEPUB by calibre-converting your SVG sample epub. Both have empty spaces where some of the SVG images and/or SVG text should be. Both are 'wrong' in different ways. It's hard to know whether the root of the problem is with the AZW3/KEPUB formats, the conversion process or the calibre Viewer or even a combination of all three

11-21-2015, 10:17 AM	#177
RbnJrg Wizard Posts: 1,778 Karma: 8700631 Join Date: Mar 2013 Location: Rosario - Santa Fe - Argentina Device: Kindle 4 NT	Jackie, in case you decide to use that kind of svg images, below you can download svg for azw3 and kepub format: https://rbnjrg.bitrix24.com/~ykypJ https://rbnjrg.bitrix24.com/~rqu6Y

11-21-2015, 10:50 AM	#178
jackie_w Grand Sorcerer Posts: 6,252 Karma: 16544692 Join Date: Sep 2009 Location: UK Device: ClaraHD, Forma, Libra2, Clara2E, LibraCol, PBTouchHD3	OK. Thanks, Ruben I've incorporated all 3 ready for the next release. I'm waiting for BetterRed's and eschwartz's comments on the 0.0.3b version before doing anything else.

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