Conclusive Proof 600 Hours is TAS
READ THIS BEFORE COMMENTING: Scrumpy explicitly claimed that it was all real footage in the video description. This is important because he entered it in a $100 contest under false premises. It's been two months and I'm still getting comments daily in my inbox saying "why does this matter." This is why it matters.
UPDATE: He's now edited the description to no longer claim it's all real footage. It used to, though.
Hand-cammed in the proud tradition of all MDVA Marths. My phone botches the colors, but like I said, you can see for yourself that this is the truth on your own setup. Credit goes to /u/BBarbs on reddit for originally realizing this critical evidence.
https://i.imgur.com/zGddBHC.png - direct comparison of the last two clips of rainbow FD