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#1 |
Member
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Karma: 10
Join Date: Oct 2019
Device: Kindle Paperwhite 7th gen
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Kindle Scribe
I have a question concerning the (maybe not so recent) changes to the Kindle Scribe Firmware.
I'm considering buying it only for reading. My questions concern the MTP file transfer protocol, in comparison to the pre-MTP Kindle Paperwhite firmware (which I keep on my Kindle):
Thank you! |
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#2 | |
Grand Sorcerer
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Karma: 26963509
Join Date: Apr 2009
Location: USA
Device: iPhone 15PM, Kindle Scribe, iPad mini 6, PocketBook InkPad Color 3
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Quote:
Calibre has long has support for MTP devices (e.g. Android) and only needed a tweak for Scribe. The only limitation is it will not copy cover thumbnails. There is no technical barrier to doing so, it is just a matter of modifying calibre's MTP driver to do this task for Scribe. For side loading fonts and third party dictionaries you will need an MTP utility if you are running on macOS. I use OpenMTP. For a command line interface you can use PowerShell commands on Windows to automate Explorer. I've installed libMTP on macOS. In either case if you want to do some task on a regular basis, it would probably entail some scripting of the command line to do it and save typing. Last edited by tomsem; 04-23-2024 at 12:22 PM. |
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#3 |
Guru
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Karma: 2825929
Join Date: Feb 2007
Location: Fresno
Device: Kindle 1; iPad Air; iPhone 7; Kobo Libra; Kindle Oasis 3
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If you have a Mac, and have a large Calibre library, it takes a while for Calibre to recognize the books on the Scribe and allow you to transfer books. I have 2,000+ books and there are sometimes problems. Kovid told me that that was too many books to have on the device, so I've been deleting books that I know it's unlikely that I'll read again.
It's a great e-reader otherwise, though, with fantastic battery life. Jim |
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#4 | |
Grand Sorcerer
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Karma: 26963509
Join Date: Apr 2009
Location: USA
Device: iPhone 15PM, Kindle Scribe, iPad mini 6, PocketBook InkPad Color 3
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Quote:
But for the most part I do not side-load at all with Kindles, so I have no idea how performance degrades if you are putting hundreds of books there with calibre. It's just not something I have any desire to do with Kindles; I use Send To Kindle to add them to my Kindle library, and confine downloads to the handful of books I'm currently reading on that particular device (or Kindle app). I have recently been doing experiments with MTP on my Scribe trying to figure out what it takes to add thumbnails to content (both side loaded and downloaded personal documents) that lack them. When connecting, the MTP client downloads a directory which maps an integer value to each item (file or folder). You cannot do anything without having this directory, and these values change between connection sessions. And the more items there are, the longer it takes to get this directory. Calibre caches and updates the directory as changes are made, so adding or removing operations after initial sync are fast. It's possible the initial sync could be optimized more than it is, and scale up better when hundreds of books are side-loaded (or downloaded), but I would need to study to see what calibre is actually doing. I would also note (from my thumbnails investigation) that system/thumbnails caches a file for every thumbnail downloaded, whether it be from downloaded content, downloaded as you browse Kindle library, or for the items Amazon chooses to show you on Home view. It does not take much storage, but for MTP it will bloat the size of the directory that MTP client has to download before it can do any file transfers. So it should help to periodically delete the contents of the folder and let it have clean slate (sync should restore thumbnails for downloaded content). I think my Scribe probably has 2 or 3 thousand files in there, easily the largest share of any folder in terms of number of items. Last edited by tomsem; 04-23-2024 at 04:25 PM. |
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#5 |
Groupie
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Join Date: Nov 2015
Device: none
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There's Font's folder, and you can put your own fonts into it. Both otf and ttf are supported, as are italics, as long as fonts are properly named. Custom fonts will work on reflowable KFX files, but not on .azw3 files.
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#6 |
Groupie
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Karma: 1512689
Join Date: Jul 2023
Device: Kindle Scribe
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Custom user added fonts work on AZW3, too. They don't on MOBI, though.
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