Starting To Record From Pre-Stored Video (Picture Cache Function) - Sony PXW-X320 Operating Instructions Manual

For details, see "Adding/Deleting the OK Mark
(FAT-HD Mode Only)" (page 103).
Starting to Record from Pre-
stored Video (Picture Cache
Function)
The camcorder is equipped with enough internal
memory to pre-store up to 15 seconds of video
and audio data in a picture cache. This allows you
to begin recording a specified number of seconds
in advance of the time when you press a recording
start button.
Selecting picture cache mode and setting
the picture cache time
Before recording in picture cache mode, you need
to perform the "Picture Cache Rec" and "P.
Cache Rec Time" settings in the "OPERATION"
menu (see page 119).
You can also select picture cache mode by using
an assignable switch to which the Picture Cache
function has been assigned (see page 158).
The picture cache time determines how far in
advance you can start recording, counting back in
seconds from the operation that starts recording.
Note that it may not be possible to start this far in
advance in the special cases explained in the
following notes.
Notes
• Storage of picture data to memory begins when you
select picture cache mode. Therefore, if you start
recording immediately after selecting picture cache
mode, the picture data from before the selection is not
recorded.
• No data is recorded to picture cache memory during
playback, recording review, or during thumbnail
display. It is not possible to record picture data from
the time you were conducting playback or a recording
review.
• Picture cache recording is not possible in Frame Rec,
Interval Rec, and Slow & Quick Motion mode. The
camcorder exits Frame Rec, Interval Rec, or Slow &
Quick Motion mode whenever you select picture cache
mode. The camcorder exits picture cache mode
automatically whenever you select Frame Rec,
Interval Rec, or Slow & Quick Motion mode.
• The data stored in memory is cleared when you change
the system settings, for example by selecting a
different video format. Picture data from before the
change is not recorded even if you start recording
immediately after the change. The camcorder exits
picture cache mode automatically.
• It is not possible to set the picture cache time during
recording.
• When "OPERATION" > "Format" > "Rec Format" is
set to "XAVC-l," the Picture Cache time can be set up
to 4 seconds.
Camcorder operation when recording in picture
cache mode
Recording procedures in picture cache mode are
basically the same as normal recording
procedures. However, note the following
differences with respect to how the camcorder
handles video, time, and output data.
• If you start recording while the media is being
accessed, the start point of the video that is
actually recorded may be later than the
currently specified picture cache time. Because
the delay increases as the number of recorded
clips increases, you should avoid rapid start-
and-stop recording operations in picture cache
mode.
• Regardless of the setting of the F-RUN/SET/R-
RUN switch, the advance mode of the internal
timecode generator is always F-RUN.
• In picture cache mode, you cannot set time data
by setting the F-RUN/SET/R-RUN switch to
SET.
To set time data, first exit picture cache mode.
• If the remaining free capacity of the media in
the currently selected slot is less than the picture
cache time, and the media in the other slot has
enough remaining capacity, then data is
recorded to the media in the other slot.
However, no data is recorded when there is no
media in the other slot, and when the media in
the other slot does not have enough remaining
capacity. (A message appears in the viewfinder
to inform you that there is not enough remaining
capacity.)
• Shot marks are not recorded if they are set
before the recording start operation.
• When you select a video format that supports
i.LINK HDV output and play a clip that was
recorded in picture cache mode, two or more
frames with the same picture and timecode may
follow on each other.
• i.LINK output is possible during picture cache
recording. However, the picture cache time is
limited.
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