User`s manual

Configure DR3
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If you set the DR3-S1n cycle record mode, all old recorded video file on the CF card
will be deleted on system startup.
7.3.4.4. Only Record Key Frame
If you want to record video in surveillance application, you can record key frame only
to decrease the size of recording video & increase recording time for a same CF card.
In this option, DR3 will record one frame per 15fps. In PAL video standard, approx 3
frame per 2 second be saved; in NTSC video standard, approx 2 frame per second be
saved.
If you select this option, system will save video only and that the sound will be
forsaken.
NOTE: The option is only for MPEG-4.
7.3.4.5. Record Video without Audio
Sometimes, your application needn’t audio in recording video, you can don’t record
any audio when you record video, it will save space ob CF card to save more recording
video.
The default setting will include audio in recording video, to not include audio in
recording video, you need pitch on the option.
If you select Record without Audio option, the MPEG-2 recording video will be saved
as standard .mpg file that needn’t conversion.
NOTE: The UQ Video Quality not includes audio for ever.