Description

Refactor the convert and render process of videos.
Use python scripts to substitute the former shell scripts.

Related Issues

fix #95
re #38

Changes Proposed

• Make the process of generating danmakus as a module.
• Make the process of generating subtitles as a module.
• Make the process of rendering video with fine-tuned parameters as a module.
• refactor the remove emojis function for the convenience of calling.

Who Can Review?

@timerring

TODO

• adjust final code after passing test

Checklist

• Code has been reviewed
• Code complies with the project's code standards and best practices
• Code has passed all tests
• Code does not affect the normal use of existing features
• Code has been commented properly
• Documentation has been updated (if applicable)
• Demo/checkpoint has been attached (if applicable)