Calculations Based on Time Frozen Backgrounds

[KLOL506]

Something that came up to me: If a person began moving while everything was completely still with no movement in the person’s perspective for what seemed to be seconds or even minutes, if it took what seemed to be seconds or even minutes for the time-frozen people/objects to move a single pixel in the faster person’s perspective, would that be possible to divide the time of how long it took the time-frozen people to move a single pixel?

Hmmm, isn't that how we get the apparent speed of the object?

Lemme make an example.

Suppose the bullet is frozen in view. It is available as frozen for 5 seconds before everything returns to normal. Suppose the 9mm bullet is 50px and 1px is 0.18 mm or 0.00018 m (The distance it moved in that timeframe). 9mm rounds out of a Beretta go at 381 m/s.

Thus, apparent speed: (0.00018/5)= 0.000036 m/s

Now, let's just say person is running at normal running speeds in their view, 6 m/s

Slow-mo formula: (True speed of projectile / apparent speed of projectile) * Person's apparent speed

Person's true speed: (381/0.000036) * 6= 63,500,000 m/s or 0.2118 c (21.18% SoL)

 

[Psychomaster35]

Well, that was what I was going for as a more reliable way to get speed without saying the objects move at snail speed

 

[KLOL506]

Well, that was what I was going for as a more reliable way to get speed without saying the objects move at snail speed

But... that's already in the calculation guidelines AFAIK.

Snail speed is for when there's no cutscene or pixel-scaling is effectively impossible.

 

[Antvasima]

So have you reached any conclusions here?

So about this...

 

[KLOL506]

So about this...

We were now discussing which picture resolution to use for the 1px method.

 

[Antvasima]

Okay. No problem then. Sorry about being too impatient.

 

[Spinosaurus75DinosaurFan]

Well theatres are usually in 2K while later online releases could be 4K. I suppose it should be the highest resolution available cut of the movie since that means the original movie was filmed in at the very least that?

If we don't have a copy to the 4K cut we could just use math to figure out how much would 1 pixel be proportionately.

 

[KLOL506]

Well theatres are usually in 2K while later online releases could be 4K. I suppose it should be the highest resolution available cut of the movie since that means the original movie was filmed in at the very least that?

You would need an actual UHD 4K blu-ray copy of the movie, a massive hard drive and an HDR600 monitor at the bare minimum to pull that off. I'm also not sure if the screenshots taken from the movie using the appropriate movie software would be within Fandom's uploading size limits, so imgur will have to be used in that case.

If we don't have a copy to the 4K cut we could just use math to figure out how much would 1 pixel be proportionately.

I wonder how that would even work.

 

[Spinosaurus75DinosaurFan]

so like if it's 10 pixels on 2K it'll be 20 pixels on 4K and divide by 20 instead

 

[KLOL506]

so like if it's 10 pixels on 2K it'll be 20 pixels on 4K and divide by 20 instead

2K doesn't exactly exist on the Blu-Ray mark, mostly it's either the classic 1920x1080p or 4K.

 

[Spinosaurus75DinosaurFan]

well yeah you get the point

 

[KLOL506]

Actually, would the black bars on the movie affect the scaling? Since not all movies are released in IMAX format except for very rare occasions.