film runs at 24 frames per second. I'm trying to really learn how fast this is.
24 frames = 1 second
12 frames = 1/2 second
6 frames = 1/4 second
3 frames = 1/8 second
1 frame = 1/24 second
1 second (or 24 frames) can be thought of as 60 bpm (beats per minute) because at 60 bpm you get 1 beat per second, or 60 beats in a minute.
In this same way, you could say that every 12 frames hits at 120 bpm because the beat hits twice per second. So if I need 1/2 second accuracy in my planning, I can use a metronome running at 120 bpm.
To get 1/4 second accuracy, I would set the metronome for 240 bpm. At 240, every beat would equal 6 frames worth of time. This is about as fast as I can slap my hand on my leg, so it's a good measure to plan timing with.
In the video above, I tried to express all of this in a muscial way.
Each second can be thought of as a musical 'measure'. I've represented 1 second as a whole note.
Each whole note = 24 frames
The second can be broken in half to get a beat every 1/2 second. I've represented this as a half note.
Each half note = 12 frames
The second can also be broken into quarters with a beat happening 4 times a second. I've represented this as quarter notes.
Each quarter note = 6 frames
I could break the second of time down further, into eights (eighth notes), but this would run at 480 bpm which I can't count out.
Each eighth note would = 3 frames
That's reeeeeally fast!