A Web scraper for InfoQ.
InfoQ hosts a lot of great presentations, unfortunately it is not possible to watch them outside of the browser or if you do not have Flash installed. The video cannot simply be downloaded because the audio stream and the slide stream are not in the same media. By downloading the video you only get the audio track and a video of the presenter but you don't get the slide.
infoqscraper
allows you to:
- list and search for presentations
- download the resources (video, audio track, slides)
- build a movie including the slides and the audio track from the resources
Only Python 2.6 or later is currently supported since PIL is not yet available for Python 3.
Install
Infoqscraper releases can be installed using pip
and PyPI.
pip install [--user] infoqscraper
The infoqscraper
executable should be available in your path.
If the command cannot be found, you have to add the installation directory
(usually $HOME/.local/bin
with --user
) to the PATH
environment variable
or specify the full path of the command.
CLI usage
Overview:
infoqscraper [global options] module [module options] command [command options]
presentation module
This module allows to list, search and download presentation from the website
presentation list
The following command displays the 20 latest presentations.
infoqscraper presentation list -n 20
You can also search for a specific topic:
infoqscraper presentation list -p agile
By default at most 10 hits are returned and only the latest 80 entries are fetched from the website.
The -n
and -m
options can be used to display more hits or to fetch more entries.
Please be a good web citizen and avoid to set -m
to a very large value. Using a search engine
or the website could be a better idea.
presentation download
The following command automatically downloads the presentation and creates a movie file
named Distributed-Systems-with-ZeroMQ-and-gevent.avi
in the current directory.
infoqscraper presentation download Distributed-Systems-with-ZeroMQ-and-gevent
cache module
This module allows to manage the disk cache.
Disk cache is disabled by default and is only useful if you plan to hack on infoqscraper
. To avoid fetching
the same resource several time from the server, all fetched resources can be put in cache. This is done by setting
the -c
global option. The resources are stored in the XDG_CACHE_DIR/infoqscraper
directory.
The following command show the size of the cache:
infoqscraper cache size
And the clear command allows to wipe the cache
infoqscraper cache clear
Dependencies
infoqscraper
relies on theses 3rd party tools:
- ffmpeg
- swftools
- rtmpdump
If theses tools are not in the PATH, their location can be specified.
Use infoqscraper presentation download -h
to learn more.
The following python packages are required:
- BeautifulSoup4
- PIL
For normal users, they are automatically installed by pip
. However, if you plan to hack infoqscraper
you will
most likely install them using the requirements.txt
file:
pip install -r requirements.txt
Compatibility
infoqscraper
is known to work on:
- Arch Linux
- Fedora 17, 18, 19
- Ubuntu 12.04.2 LTS
ffmpeg
versions from 0.7 to 2+ are supported. Users of Debian Squeeze or
Ubuntu 10.04 LTS must use a newer ffmpeg
release than the one provided by
their distro. ffmpeg
0.5 is too old to be supported (help wanted).
Arch linux
Packages python2
, swftools
, rtmpdump
and ffmpeg
must be installed.
Ubuntu 12.04 LTS
Packages ffmpeg
, rtmpdump
and libavcodec-extra-53
must be installed.
swftools
is not available and must installed manually.
Ubuntu 12.10 and later
Packages ffmpeg
, rtmpdump
, swftools
and libavcodec-extra-53
must be installed.
Fedora
Packages ffmpeg
, swftools
and rtmpdump
from rpmfusion must be installed.
rtmpdump
from Fedora 19 is currently broken.
You have to download rtmpdump source code and compile it.
Help
Feel free to contact me if you have any question or feature request.
If you find this project useful, any contribution or feedback is welcome. If you are not a developer, improving the packaging, the documentation or fixing my broken English could be a good start.