Why does youtube take so long to process videos?

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Tags

1. #hours
2. #slowly
3. #varies
4. #youtube
5. #formats
6. #depending
7. #greatly
8. #anywhere
9. #upload
10. #traffic
11. #minutes
12. #expect
13. #format
14. #render
15. #should
16. #about
17. #original
18. #google
19. #video
20. #could
21. #resolution
22. #several
23. #processing
24. #higher