Speed Ehancement: Replace PIL with OpenCV

[ss32]

• Removes dependency on PIL in favor of OpenCV
• No longer writes temporary frames to file
• Generates video on the fly

This significantly speeds up the video generation process.

[oleczek]

@ss32 Do you think it would be possible to run it entirely on the fly - I mean live? E.g. stream the music, or get it from the microphone / aux?

[fractaldna22]

if it doesnt write frames to file this means that if you make an entire video and an error doesnt come up till the very end i.e. "folder doesnt exist" or "no such module as google.colab.files", ALL your work will get deleted forever and there will be no way to recover it. this happened so many times on the old Deep music visualizer and its outrageous and unacceptable