EXTH 116 when converting to MOBI

DiapDealer · 07-23-2011, 09:02 AM

Perhaps I've missed it—or not done enough experimenting—but, how exactly (if at all), is the EXTH record type 116 being created when converting documents to MOBI? And is it configurable by providing certain criteria in the source document?

I'm thinking specifically of ePub->MOBI. Kindlegen uses certain reference items (if they exist) from the guide section of the OPF file to create that "startreading" EXTH 116 record. The href in that reference item is converted to the position (4-byte offset) in the resulting mobi at which to open when first opened. The "text" ePub semantic (assignable in Sigil) is used by Kindlegen for this purpose. I believe it will use a "start" reference type as well.

Code:

<reference type="text" title="Text" href="Text/EditorsPreface.xhtml#startanchor"/>

So far, nothing I can do to the source document will make calibre create (or populate) that EXTH 116 record. Is there any way to make this happen currently, that I've missed? Or can there be a way in the future?

kovidgoyal · 07-23-2011, 11:06 AM

From the whats new for 0.8.11

MOBI Output: When converting epub documents that have a start element in their guide, use it to mark the starting position at which the MOBI file will be opened.

Closes tickets: 804755 [External link]

DiapDealer · 07-23-2011, 11:18 AM

Great news! I was one update behind. Thanks for the new feature and sorry for no longer relevant thread.

DiapDealer · 07-23-2011, 11:53 AM

I'm just curious about the internals of this new feature. It definitely works for Kindle devices and the Kindle Previewer (which makes me infinitely happy), but I'm still not seeing an EXTH 116 record in the resultant MOBI (like I do with MobiPocket Creator or Kindlegen). What other record or MOBI attribute are you using to achieve the same effect as the "startreading" offset?

kovidgoyal · 07-23-2011, 12:14 PM

It doesn't use EXTH 116, it uses an entry in the guide section of the mobipocket markup.

07-23-2011, 09:02 AM	#1
DiapDealer Grand Sorcerer Posts: 27,532 Karma: 193191846 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	EXTH 116 when converting to MOBI Perhaps I've missed it—or not done enough experimenting—but, how exactly (if at all), is the EXTH record type 116 being created when converting documents to MOBI? And is it configurable by providing certain criteria in the source document? I'm thinking specifically of ePub->MOBI. Kindlegen uses certain reference items (if they exist) from the guide section of the OPF file to create that "startreading" EXTH 116 record. The href in that reference item is converted to the position (4-byte offset) in the resulting mobi at which to open when first opened. The "text" ePub semantic (assignable in Sigil) is used by Kindlegen for this purpose. I believe it will use a "start" reference type as well. Code: <reference type="text" title="Text" href="Text/EditorsPreface.xhtml#startanchor"/> So far, nothing I can do to the source document will make calibre create (or populate) that EXTH 116 record. Is there any way to make this happen currently, that I've missed? Or can there be a way in the future?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Converting books to mobi	isis	Calibre	9	07-10-2011 10:19 AM
EXTH Header Question	RecQuery	Kindle Formats	1	06-07-2011 02:28 PM
converting from standard mobi to compressed mobi	noideaatall	Kindle Formats	6	07-11-2010 03:10 PM
Converting to mobi	rcuadro	Calibre	3	03-13-2009 01:14 AM
exth type, exth data	AlexBell	Reading and Management	4	07-06-2008 11:51 PM

07-23-2011, 11:06 AM	#2
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	From the whats new for 0.8.11 MOBI Output: When converting epub documents that have a start element in their guide, use it to mark the starting position at which the MOBI file will be opened. Closes tickets: 804755 [External link]

07-23-2011, 11:18 AM	#3
DiapDealer Grand Sorcerer Posts: 27,532 Karma: 193191846 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Great news! I was one update behind. Thanks for the new feature and sorry for no longer relevant thread.

07-23-2011, 11:53 AM	#4
DiapDealer Grand Sorcerer Posts: 27,532 Karma: 193191846 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	I'm just curious about the internals of this new feature. It definitely works for Kindle devices and the Kindle Previewer (which makes me infinitely happy), but I'm still not seeing an EXTH 116 record in the resultant MOBI (like I do with MobiPocket Creator or Kindlegen). What other record or MOBI attribute are you using to achieve the same effect as the "startreading" offset?

07-23-2011, 12:14 PM	#5
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It doesn't use EXTH 116, it uses an entry in the guide section of the mobipocket markup.

Advert

Advert