libquvi wrapper module
This is a first attempt to wrap libquvi into python.
How it is made ?
This is based on Cython. The main functions are defined into cpython.pxd file and Quvi class is developed into quvi.pyx file. Compilation is made with Cython using the simple command:
python setup.py build_ext
You can also compile .so file in you current directory:
python setup.py build_ext --inplace
To install library on system, you may use as root or by sudo:
python setup.py install
Remember you can use virtualenv to try quvi without impact on your system:
mkdir /tmp/py-virt virtualenv /tmp/py-virt source /tmp/py-virt/bin/activate setup python.py install
This will install quvi into a virtual environment. To deactivate virtual environment, in the same terminal session:
After having compiled quvi, you can use it as a python module. Module defines a class named Quvi. This is a simple usage:
import quvi #instance: q = quvi.Quvi() q.parse("http://a.youtube.url") print q.get_properties()
You will see a dict definition that have severals information given by libquvi.
It’s possible to use multiprocessing module or threads module to handle several instances. See this example:
import quvi from multiprocessing import Process #this function will be called in thread def getInfo(url): q = quvi.Quvi() q.parse(url) print q.get_properties() #urls to parse url = "http://www.youtube.com/watch?v=..." url2 = "http://www.youtube.com/watch?v=..." #processes list processes =  processes.append( Process(target=getInfo, args=(url,)) ) processes.append( Process(target=getInfo, args=(url2,)) ) #start and join threads [p.start() for p in processes] [p.join() for p in processes] print "done"
Both url will be handle in a thread. So this will be about twice quicker than parsing each url one by one.
Another usecase would be to get the properties of the best format available:
from quvi import Quvi def get_properties_best_quality(url): q = Quvi() url = "http://www.youtube.com/watch?v=0gzA6Xzbh1k" if q.is_supported(url): formats = q.get_formats(url) best_format = formats[-1] q.set_format(best_format) q.parse(url) properties = q.get_properties() return properties return none
And downloading the video:
def get_video(filename, url): properties = get_properties_best_quality(url) if properties is not None: to_dl = properties["mediaurl"] filename += properties["filesuffix"] urlretrieve(to_dl, filename)
Why this python library ?
Because Quvi command line is really nice and I wanted to get youtube, dailymotion, vimeo (etc…) movies information into my python project. Calling “quvi” command line may be used, but having a real library implementation is the best way to have good performances.
Using Cython is pretty cool
What’s next ?
For now, you can only get media information from a page you ask to parse. I will continue to develop this library to improved and use properties provided by C library (version, nextmediaurl…)
If you want to develop with me, fork the project on GitHub, then process some merge request :)