Brawl Replays Are Inaccurate

[Entroper]

Words Of Wisdom said:

supermario128 said:
"Well this could be possible. The replay data isn’t a video, it’s just a wrote down script of what the fighters did. Any slight delays in reading the data and the characters will perform differently than what you previously did."

Taken from GoNintendo...

Which would be fine if not for the fact that according to this video sometimes the replay works and sometimes it does not. If the same replay at times works then it means the stored data is correct.

There could be some kind of bug with the pseudo-random number generator, or the way that the PRNG is used, that only shows up in certain rare cases that weren't found in playtesting, which could cause different outcomes from the same set of inputs.  I don't know if that's what happened here (and the strange circumstances of the video have already been pointed out), but it's a possibility.