Using python and ffmpeg to split .mp4 video into chunks of few seconds

Question

I would like to split videos into small chunks of two seconds while maintaining good quality and running fast.

I've tried various techniques on StackOverflow such as

• Using Python script to cut long videos into chunks in FFMPEG
• Cut .mp4 in pieces Python
• python library for splitting video
• How do you split a list into evenly sized chunks?
• ...

But the result does not satisfy me. Some are too slow, and some do not give the short-length chunk.