Documents Thumbnailer

Main idea was taken from https://github.com/FelixSchwarz/anythumbnailer. Code rewriten from zero.

A CLI utility/Python library to create thumbnails for different file types (including PDF, mp4 videos and Microsoft Office documents aka docx/xlsx/pptx).

All the heavy-lifting is done by commonly-used tools such as LibreOffice/unoconv, ffmpeg, poppler and ImageMagick so format support is limited by what these tools can process.

Program requirements

Video encoding: ffmpeg Pdf encoding: poppler-utils Office files: unoconv Imagemagic external libraries: http://pillow.readthedocs.org/en/3.2.x/installation.html#external-libraries

Installation

$ pip install py-thumbnailer

Usage

From command line:

$ py-thumbnailer SOURCEFILE [OUTPUTFILE]

From python code:

from py_thumbnailer.thumbnail import create_thumbnail
output_buffer = create_thumbnail(source_file)

Unoconv doesn't support multiprocessing, so you have to use mutex

import fcntl

try:
    fcntl.flock(converter_lock, fcntl.LOCK_EX)
    preview_buffer = create_thumbnail(document.document_file, resize_to=400)
finally:
    fcntl.flock(converter_lock, fcntl.LOCK_UN)