Frames Per Second

why 23.976 and not 24 fps?? - AC's & DIT's - Cinematography.com

Due to limitations of frequency divider circuits when the color standard was promulgated, the color subcarrier frequency was constructed as composite frequency assembled from small integers, in this case, 5x7x9/(8x11) MHz.[7] The horizontal line rate was reduced to approximately 15,734 lines per second (3.579545x2/455 MHz) from 15,750 lines per second, and the frame rate was reduced to about 29.970 frames per second (the horizontal line rate divided by 525 lines/frame) from 30 frames per second. These changes amounted to 0.1 percent and were readily tolerated by existing television receivers
So throughout the 2000s, the main reason you shot at 23.976 fps instead of 24P was audio post in the U.S.
Even movies shot at true 24 fps had to deal with this because a telecine transfer to NTSC for dailies and NLE post changed the frame rate to 23.976 fps, so the frame rate didn't get restored to 24 fps until the movie was finished to film and projected at 24 fps. So after a movie was edited offline, tape copies were sent to sound post for cutting and mixing sound, so they were working with material running at 23.976 fps whether or not it was shot at 24 fps or 23.976 fps

Backlinks (2)

컴퓨트로늄

컴퓨트로늄 정의

컴퓨트로늄이 뭐야?

컴퓨트로늄(computronium)은 계산을 수행하는 데 최적으로 설계된 가상의 물질이다.

쉽게 말하면, “물질을 최대한 컴퓨터처럼 만든 것”이다. 일반 컴퓨터는 실리콘 칩, 전선, 냉각 장치, 케이스처럼 계산에 직접 쓰이지 않는 부분이 많다. 컴퓨트로늄은 그런 낭비를 극단적으로 줄이고, 물질의 질량·에너지·구조 전체를 계산에 쓰도록 만든다는 개념이다.

예시로는 다음이 있다.

이 개념은 주로 SF, 미래학, 인공지능 이론, 트랜스휴머니즘, 우주공학적 상상에서 나온다.

핵심은 이것이다.

컴퓨트로늄 = 계산 효율을 극한까지 높이기 위해 재구성된 물질

현실에 아직 존재하는 물질 이름은 아니다. 물리학적으로 가능한 한계, 열 방출, 에너지 공급, 정보 저장 밀도 같은 제약 때문에 실제 구현은 가설 수준이다.

Backlinks (2)

Frames Per Second

Warning

This post is more than a year old. Information may be outdated.

Due to limitations of frequency divider circuits when the color standard was promulgated, the color subcarrier frequency was constructed as composite frequency assembled from small integers, in this case, 5x7x9/(8x11) MHz.[7] The horizontal line rate was reduced to approximately 15,734 lines per second (3.579545x2/455 MHz) from 15,750 lines per second, and the frame rate was reduced to about 29.970 frames per second (the horizontal line rate divided by 525 lines/frame) from 30 frames per second. These changes amounted to 0.1 percent and were readily tolerated by existing television receivers
So throughout the 2000s, the main reason you shot at 23.976 fps instead of 24P was audio post in the U.S.
Even movies shot at true 24 fps had to deal with this because a telecine transfer to NTSC for dailies and NLE post changed the frame rate to 23.976 fps, so the frame rate didn't get restored to 24 fps until the movie was finished to film and projected at 24 fps. So after a movie was edited offline, tape copies were sent to sound post for cutting and mixing sound, so they were working with material running at 23.976 fps whether or not it was shot at 24 fps or 23.976 fps

Backlinks (2)