Error in Converting Kindle ebook

[tonybaboni]

Hello everyone, really hope I can fine some help here. Here goes and hopefully I can provide as much detail as possible.

I bought a textbook for school in a pdf format from Amazon.ca on my computer. Then i opened the textbook on my android tablet and it dah to open with the amazon/kindle app only as it is in a azw4 format.

I downloaded the Calibre and tried converting it to PDF. The very first error that I received was that the book is protected by DRM. After fiddeling aroung and using the DeDRM tools I was able to get rid of the DRM on the book. However when I go to convert from azw4 to PDF now I get a conversion failed error. Unfortunately this error means nothing to me and getting this textbook in a PDF would make school much easier as I can highlight and note things in PDF format.

Here is the error text:

Spoiler:

calibre, version 2.37.1 (win32, isfrozen: True)
Conversion Error: Failed: Convert book 1 of 1 (Modern Dental Assisting)

Convert book 1 of 1 (Modern Dental Assisting)
Resolved conversion options
calibre version: 2.37.1
{'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 0.0,
'book_producer': None,
'change_justification': u'original',
'chapter': u"//*[((name()='h1' or name()='h2') and re:test(., '\\s*((chapter|book|section|part)\\s+)|((prolog|pr ologue|epilogue)(\\s+|$))', 'i')) or @class = 'chapter']",
'chapter_mark': u'pagebreak',
'comments': None,
'cover': u'C:\\Users\\User\\AppData\\Local\\Temp\\calibre_q new7r\\jg5xum.jpeg',
'custom_size': None,
'debug_pipeline': u'C:/Users/User/Documents/debug',
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'duplicate_links_in_toc': False,
'embed_all_fonts': False,
'embed_font_family': None,
'enable_heuristics': False,
'expand_css': False,
'extra_css': None,
'filter_css': u'',
'fix_indents': True,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x03E5BE30>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0.0,
'linearize_tables': False,
'margin_bottom': 5.0,
'margin_left': 5.0,
'margin_right': 5.0,
'margin_top': 5.0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'no_chapters_in_toc': False,
'no_inline_navbars': False,
'old_pdf_engine': False,
'output_profile': <calibre.customize.profiles.TabletOutput object at 0x03E6C450>,
'override_profile_size': False,
'page_breaks_before': u"//*[name()='h1' or name()='h2']",
'paper_size': u'letter',
'pdf_add_toc': False,
'pdf_default_font_size': 20,
'pdf_footer_template': None,
'pdf_header_template': None,
'pdf_mark_links': False,
'pdf_mono_family': u'Courier New',
'pdf_mono_font_size': 16,
'pdf_page_numbers': False,
'pdf_sans_family': u'MS Shell Dlg 2',
'pdf_serif_family': u'Times New Roman',
'pdf_standard_font': u'serif',
'prefer_metadata_cover': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': False,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': u'C:\\Users\\User\\AppData\\Local\\Temp\\calibre_q new7r\\5fxios.opf',
'remove_fake_margins': True,
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': u'',
'search_replace': '[]',
'series': None,
'series_index': None,
'smarten_punctuation': False,
'sr1_replace': None,
'sr1_search': None,
'sr2_replace': None,
'sr2_search': None,
'sr3_replace': None,
'sr3_search': None,
'start_reading_at': None,
'subset_embedded_fonts': False,
'tags': None,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'uncompressed_pdf': False,
'unit': u'inch',
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: AZW4 Input running
on C:\Users\User\AppData\Local\Temp\calibre_qnew7r\yq ybha.azw4
Extracting PDF from AZW4 Container...
Python function terminated unexpectedly
(Error Code: 1)
Traceback (most recent call last):
File "site.py", line 132, in main
File "site.py", line 109, in run_entry_point
File "site-packages\calibre\utils\ipc\worker.py", line 193, in main
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 31, in gui_convert_override
File "site-packages\calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
File "site-packages\calibre\ebooks\conversion\plumber.py", line 1042, in run
File "site-packages\calibre\customize\conversion.py", line 241, in __call__
File "site-packages\calibre\ebooks\conversion\plugins\azw4_in put.py", line 25, in convert
File "site-packages\calibre\ebooks\azw4\reader.py", line 35, in extract_content
MemoryError

Thank you! Much appreciated.

[kovidgoyal]

Use the kindleunpack calibre plugin, that file is an azw4 i.e. a PDF inside an amazon wrapper.

[tonybaboni]

Originally Posted by kovidgoyal

Use the kindleunpack calibre plugin, that file is an azw4 i.e. a PDF inside an amazon wrapper.

Thank you for the quick reply Kovid, much appreciated. Can you please just explain how to use the kindleunpack plugin step by step? i am not so familiar with this, sorry.

Thank you.

[AnemicOak]

More on Kindleunpack...
https://www.mobileread.com/forums/sho...d.php?t=171529

[theducks]

tonybaboni

Moderator Notice
Please wrap log pastes over a dozen lines, in a spoiler tag

[tonybaboni]

Originally Posted by kovidgoyal

Use the kindleunpack calibre plugin, that file is an azw4 i.e. a PDF inside an amazon wrapper.

Hello again, I read into the KindeUnpack and got the addin installed. I then tried the extract PDF function and got a different sort of error message. Here are the logs (Hopefully i insert it properly, if not I am sorry):

------------

Spoiler:

calibre, version 2.37.1
ERROR: KindleUnpack - The Plugin v0.81.2:

Traceback (most recent call last):
File "calibre_plugins.kindleunpack_plugin.action", line 291, in extract_element
File "calibre_plugins.kindleunpack_plugin.mobi_stuf f", line 105, in getPDFFile
File "calibre_plugins.kindleunpack_plugin.kindleunpack. kindleunpack", line 869, in unpackBook
File "calibre_plugins.kindleunpack_plugin.kindleunpack. mobi_sectioner", line 50, in __init__
MemoryError

Thank you for your help, much appreciated.

[eschwartz]

Please report problems encountered while using KindleUnpack, in the KindleUnpack thread.

That way the maintainer of KindleUnpack will be sure to see it.

[DiapDealer]

The PDF is clearly huge and Kindleunpack is not optimized at all for memory usage. You have two options to try:
1) If possible, install the 64-bit version of calibre and retry the plugin.If you have a newer PC with scads of memory, this is probably the way to go.
2) Install the 64-bit version of ActiveState Python 2.7.x (if you have a 64-bit machine--32-bit otherwise) and use the stand-alone version of KindleUnpack to extract the pdf from it's azw4 wrapper. This will at least let you leverage all the memory your PC has to offer KindleUnpack.

If neither of those works, then you either need a beefier 64-bit machine with tons of ram, or you need to buy smaller azw4s.

For future reference; the thread for KindleUnpack is: https://www.mobileread.com/forums/showthread.php?t=61986
And the thread for the KindleUnpack calibre plugin is: https://www.mobileread.com/forums/sho...d.php?t=171529