compatible with python 3.6 and ffmpeg(libavcodec 57 and libavutil 55). how to use?

[Wen-lee]

Hi, I'm a newbie with ffmpeg. I changed your code to compatible with python 3.6 and ffmpeg 3.3.1(libavcodec 57 and libavutil 55). But I didnot know how to use it. In your guidence(Usage), where is the avccPacket and frameGenerator came from? Please give more detail. Thanks in advance! Wen Lee