User Manual

Chapter 10: Recording
84 TruVision NVR 21(S/P) User Manual
3. Configure the following recording settings:
• Encoding parameters: Select one of the stream types: Mainstream (TL-Hi,
Mainstream (TL-Lo), Mainstream (Event), Mainstream (Alarm), or Substream.
• Stream type: Select the type of stream to record, either video or video and
audio.
• Resolution: Select the resolution of the recording.
• Bitrate type: Select Constant or Variable.
• Video quality: Select the quality at which to record. If “Constant” was selected
as the bit rate type, this option is unavailable.
• Frame rate: Select the recording frame rate.
• Max bit rate mode: Select the general default or customized option.
• Max bit rate (kbps): If the customized maximum bit rate mode was selected,
enter the value here. It is calculated from the frame rate and time required.
• Pre-record: This is the time the camera starts recording before the event. Select
the time in seconds to start pre-recording before the event.
The maximum pre-recording times available depend on the constant bit rate.
See “Maximum pre-recording times” on page 155 for more information.
• Post-record: This is the time the camera continues to record after the event.
Select the time in seconds to stop post-recording after the event.
• Auto-delete (day): Select the number of days after which recorded video from
the specified camera is permanently deleted from the HDD. A “day” is defined as
the 24-hour period from when the auto delete mode (ADM) was set.
The maximum number of days that can be set is 60. However, the actual number
of days permitted depends on the HDD capacity. If the value is set to ‘0’, the
option is disabled.
Note: Both main stream and substream recordings are deleted in auto-delete
mode.
• Record audio: Select Yes to record sound with the images.
4. Click Apply to save the settings.
5. Click the Capture tab and configure the settings for captured image, such as
resolution. Click Apply to save the settings.
6. Click Back to return to live view.
Configuring overwrite
You can select how the recorder responds when the HDDs become full and there is no
longer sufficient space to save new data.