Pyrana is a pure-python package which provides easy, pythonic and powerful handling of multimedia files.
pyrana is a modern, pure python package which is developed for python 3 and compatible with python 2.7, which takes great advantage of CFFI, so the compatibility with pypy is just one step away.
pyrana offers a minimum 100% unit-test and documentation coverage, and put great emphasis on small, yet complete and workable examples. Last but not least, pyrana is released under the very liberal ZLIB license.
More documentation about pyrana on this series of blog posts