Initial commit
Importing original tutorials.

from http://dranger.com/ffmpeg/
Added Makefile.
Working tutorial01
Updated README.
Working tutorial02
Working tutorial03
Updated build instructions.
Working tutorial04.

There seem to be some problems with the sound (it skips occasionally).
Also, the application doesn't terminate correctly sometimes, and has to
be terminated with kill -9.  I haven't investigated the cause of either
problem yet.
Updated README.
Working tutorial05
Reverting to originals (3e14261).
Working tutorial03

This time, I've reused the audio_decode_frame function from the original
tutorial as much as possible.
Working tutorial04

This time, I've reused the audio_decode_frame function from the original
tutorial as much as possible.  The audio still stutters, and the
application does not terminate correctly, though.
Updated README
Working tutorial06
Working tutorial07.
Removing tutorial08

This tutorial describes the use of software scaling, which has been used
since tutorial01.c in the updated version of the tutorials.
Updated README
Removing tutorial08 from Makefile.