compressor

ffmpeg Guide

https://gist.github.com/protrolium/e0dbd4bb0f1a396fcb55

ffmpeg on diffrent threads

https://streaminglearningcenter.com/blogs/ffmpeg-command-threads-how-it-affects-quality-and-performance.html

for json dimention

https://stackoverflow.com/questions/7362130/getting-video-dimension-resolution-width-x-height-from-ffmpeg https://gist.github.com/nrk/2286511

Compress using reducing dimention

https://stackoverflow.com/questions/4490154/reducing-video-size-with-same-format-and-reducing-frame-size

How to change video codec

https://unix.stackexchange.com/questions/28803/how-can-i-reduce-a-videos-size-with-ffmpeg

About video codec

https://www.wowza.com/blog/video-codecs-encoding

About audio bitrate and samplerate

https://www.izotope.com/en/learn/digital-audio-basics-sample-rate-and-bit-depth.html

About what video is actually made of

https://www.videomaker.com/article/c10/15362-video-formats-explained

subprocess disable shell output

https://stackoverflow.com/questions/11269575/how-to-hide-output-of-subprocess-in-python-2-7