35
Recording and Playback: Normal Recording
Re
co
rd
in
g an
d P
lay
ba
ck
REC START/STOP button or VTR button at the lens starts recording of video and sound on the P2 card. A cluster of data that
consists of video and sound generated through a shooting action, together with such added information as meta data, is
called a “clip”.
In the unit, the camera’s recording method is selectable
between the native recording method with the frame rate
unchanged and the normal recording method pulling the
frame rate down to 59.94 or 50 frames.
Images at 24P (23.98P: referred to as 24P) are pulled down
in 2:3 mode. Images at 30P (29.97P: referred to as 30P) are
pulled down in 2:2 mode and recorded as 59.94i or 59.94P
(referred to as 60i and 60P). Images at 25P are recorded as
50i or 50P with 2:2 pulled down. 1080i supports 24PA
(2:3:3:2 Advanced Pull down) as well.
AVC-Intra does not support pull-down recording.
Example of 24P Over 60i
Example of 720P 24P Over 60P
This recording method extracts and records effective frames
at the frame rates of the AVC-Intra recording in 1080i, and
DVCPRO HD and AVC-Intra recording in 720P.
For 720P, it is possible to record images where the length is
2 to 2.5 times longer than the pull-down recording.
Even in native recording, the rate for outputting camera
images and playback images is 59.94 or 50 frames that are
pulled down.
Example of 1080-24PN (Native)
Example of 720-24PN (Native)
Notes
The recording will start from the top frame of a 5-frame
cycle for 24P/24PA recording, a 4-frame cycle for 24P
native recording or a 2-frame cycle for 30P and 25P native
recording of 720P, respectively. Therefore, the time code
may be discontinued when recording clips continuously in
another mode in which the recording cycle is different.
Even if a P2 card has just been inserted, or the power has
been just turned on, you can start recording using the
internal memory of unit. In this case, recording cannot be
stopped until the P2 card is recognized. If the inserted
card is not recognized as a recordable P2 card, the record
in internal memory is instantly discarded, and the
message “CANNOT REC” is displayed on the viewfinder.
Press the MODE CHECK button to check P2 card status
(displayed in viewfinder).
a.
REC START/STOP button
b.
MODE CHECK button
Normal Recording
Normal Recording and Native Recording
Normal recording (Pull-down recording)
B
A
C
D
Ao Ae Bo Be Bo Ce Co De Do De
Camera recording
2:3 pull down =
recording
B
A
C
D
A
B
B
C
D
D
Camera recording
2:3 pull down =
recording
Effective frames
Native recording
B
A
C
D
Ao Ae Bo Be Bo Ce Co De Do De
B
A
D
C
Camera recording
2:3 pull down
Recording
B
A
C
D
A
B
B
C
D
D
B
A
D
C
Camera recording
2:3 pull down
Recording
Effective frames
a
b
AJ-HPX2700G-VQT1V27_eng.book 35 ページ ２００８年９月２日 火曜日 午後５時４３分
