Variable frame rates (VFR)

By taking full advantage of the special characteristics of P2 cards, this unit provides frame skipping (undercranking) recording and highspeed (overcranking) recording, which are actually movie techniques, without the use of a frame rate converter. (Either the 25PN mode must be set for this.)

Since the camera-recorder records only the effective frames (native recording), recording is possible for 2 times as long compared with recording in the 25P or 50P mode (standard recording).

25PN mode:

The camera-recorder shoots in the 25 fps native mode. The video signals delivering images at a rate of 25 fps are recorded in 25 frames. The signals are recorded only in the effective frames so recording is possible for 2 times as long.

 

 

 

 

 

 

 

 

 

 

 

 

 

«: effective frame

Camera-Recorder

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

2

 

 

3

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25P

1

 

1

2

 

2

3

 

3

4

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

2

 

 

3

 

 

4

 

 

25PN

1

2

3

4

•Before VFR shooting, you must set the recording frame rate and recording format ahead of time.

•You cannot change the frame rates while recording.

•VFR shooting is possible only in progressive-shooting mode with 720 vertical lines.

You can select any of 20 recording frame rates ranging from 12 frames per second (fps) to 50 fps. The list of formats that allow recording by the camera-recorder (Page 123).

There may be slight discrepancies between the recording frame rate displayed and the frame rate at which the images are actually recorded. Refer to the table below.

Indicated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

recording

50

48

45

42

37

34

32

30

28

27

26

25

24

23

22

21

20

18

15

12

frame rate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Actual

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

recording

50.00

48.08

45.00

41.67

36.76

34.09

32.14

29.76

28.13

27.17

26.04

25.00

24.04

23.15

22.06

20.83

19.74

17.86

15.00

12.50

frame rate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30