What frame rate used for commercial release of Hollywood Movies?

[dtvdrb]

All,
Film is shot at 24 frame/s. When a master is made of full priced movies, the digital telecine is connected to an MPEG2 encoder for normal DVDs and an MPEG4 encoder for Blu-ray discs. Note this is all component and does not use any analog NTSC.

The telecine can be run at 23.97602398, 24, 25, 29.9700300 or 30 frame/s.

On replay the disc player will be told what output signal is selected.

1. on HDMI a 24p or 24 frame/s progressive scan signal.

2. If NTSC S Video or NTSC composite (analog) the player's motor is slowed by 0.1 %. The player will do the "telecine treatment". ie repeat every second frame then every third frame and this repeats. This means that 23.97602398 frame/s is converted to 29.9700300 frame/s which is the standard for NTSC.

3. If the player is in a country using 50 Hz power mains, then the motor is sped by 4 % to produce 25 frame/s. The program becomes 2 minutes 24 seconds shorter. The sound increases pitch by 1/3 of a semitone.

4. If the player is in a country using 60 Hz power mains the motor speed can be either 23.97602398 or 24 frame/s. The "telecine treatment" is used to produce component video.

5. If an NTSC signal is to be burnt then the "reverse telecine treatment". This is where every second frame then every third frame repeating will reduce the NTSC frame rate to 23.97602398 frame/s.

Analysing of the player output signals will not tell you the recording signal.

So what frame rate do the major studios burn masters?

dtvdrb

[jagabo]

As far as video is concerned the name 24p is shorthand for 23.976... (24000/1001) fps. So 24p HDMI is not 24 fps, it's 23.976 fps. Progressive DVDs are 23.976 fps. Progressive DVDs include pulldown flags that tell the DVD player how to produce 59.94 fields per second from the 23.976 frames per second.

In NTSC countries, video "masters" made from film are 23.976 fps. In PAL countries they are 25 fps.