I guess this reveals how fucking dumb I am. I can’t get the math to make sense in my head. If you watch at 1.25 speed, logically (or illogically I guess) I assume that this makes the video 1/4 shorter, but that isn’t correct.
In short, could someone reexplain how fractions and decimals work? Lol
Edit: thank you all, I understand now. You helped me reorient my thinking.
In: 8653
In 1.25x speed, what used to take 1.25 seconds now takes 1 second to play.
A 2.5 second clip now takes 2 seconds to finish – you can imagine that 2.5 second clip split up into two 1.25-second subclips, each taking 1 second to finish under 1.25x speed.
Now imagine a 100-second video, how long would it take to play that video? Imagine splitting that video into 1.25-second sections, there will be `100 / 1.25 = 80` sections. Each of those sections would take 1 second to finish under 1.25x speed, so the video would finish in 80 seconds. That’s 20 seconds saved! The percentage change is calculated with `(new – old) / old`, so the time decreased by `(80 – 100) / 100 = -20%`.
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