User Manual

Understanding DV Digital Cut Delay
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- Pullin B: The first frame of the sequence plays back as three fields, the second frame as
two fields, the third frame as three fields, and so on.
Now you can perform a digital cut to append the new sequence.
Understanding DV Digital Cut Delay
DV digital cut delay affects the timing of the DV data sent to the DV device for a digital cut.
Increasing the digital cut delay will cause the sequence stream to be to delayed when it is sent to
the DV device when digital cut begins. While the system is waiting for this delay, the first frame
of the sequence is continually sent to the DV device.
There are several components to this setting.
• The recommended value represents the delay that is found in the machine template for the
online DV device. If for some reason, there is no “online” DV device, the recommended
value is set to the delay in the machine template of the “offline” DV device. If no DV device
is configured in the Deck Configuration and Deck Settings dialog boxes, this value is set to
0.
• If you want to override the recommended digital cut delay, select the Override
Recommended Digital Cut Delay option, and type a delay value into the Digital Cut Delay
(frames) text box. When a digital cut is performed, the delay value used for the cut is based
on whether the Override Recommended Digital Cut Delay option is selected. If the option is
deselected, the recommended value is used.
Before setting this delay, you should perform several digital cuts to determine the
frame-accuracy behavior of the recording device. Begin with the DV digital cut delay set to 0
frames. If the digital cut frame accuracy of the device is inconsistent, the results of using the
delay are also inconsistent. If the sequence is missing frames at the beginning of the digital cut
on the tape, increase the delay. If the first frame of the sequence is repeated, decrease the DV
digital cut delay. The starting frame of the sequence should change according to your delay.
For example, suppose the DV digital cut delay is set to 0 frames. The digital cut is expected to
begin with the first frame of the sequence being recorded on the IN point designated on the tape.
In this example, the IN point is set to frame number 6. This is where the recording would begin
on the tape. However, due to the behavior of the particular DV device, the digital cut does not
perform as expected. The first frame of the sequence recorded on the tape is actually the fourth
frame.
To correct this, the DV digital cut delay should be increased to have the Avid system delay
sending the sequence to the device. If the DV digital cut delay is set to three frames, this should
cause recording on the tape to begin with the correct sequence frame.