Grass Valley M-Series iVDR User Manual v.2.0.10 - Manual (Page 145)

20 April 2005 M-Series User Manual 145
Using Continuous Record mode
Using Continuous Record mode
You can configure Recorder for Continuous Record mode. Continuous record is
useful for applications that normally use Loop Record, for example a manual time
delay. The following sections describe how continuous record works and how to set
up a continuous recording:
• “About Continuous Record mode”
• “Operational considerations”
• “To start continuous record:”
About Continuous Record mode
Continuous record mode allows you to specify a fixed length recording that records
continuously. When the fixed length you specify is reached, the iVDR begins to erase
the oldest media in 3 minute segments to make room for new media. In this way, new
media is continuously recorded while the recording is kept to a fixed length.
The continuous recording is stored in the iVDR as a program. The program thumbnail
is displayed in the Clips pane immediately after the recording starts. While recording,
you can load the continuous record program in Player for playout or to create subclips.
The media referenced by the subclips that you create is saved outside the continuous
record program and does not subtract from the continuous record length. The subclips
can be inserted in Playlist as play events.
Operational considerations
Consider the following when planning for Continuous Record operation:
• Minimum continuous record length– 6 minute
• Maximum continuous record length– Maximum record length is limited by the
amount of storage space and the compression settings used. A message is displayed
if the fixed length you enter exceeds the available disk space.
• Minimum record to playback time– 5 seconds. Playback in continuous record
can start no sooner than 5 seconds after the start of record.
• Modifying the continuous record name or length– You can modify the
continuous record name or length during record. If you reduce record length, the
oldest media outside the new record length is erased.
• Stopping continuous record – If the recording is stopped before the fixed length
is reached, the resulting program duration is the time elapsed since the recording
started. Like normal record mode, you cannot stop, then start a continuous
recording. Once record is stopped, you must eject the program and create a new
continuous record.
• Transferring the continuous record program– The continuous record program
cannot be transferred to a file or networked device until record is stopped.
• Continuous record storage space is not reserved– Continuous record is allowed
to start as long as the record length you enter is less than the available storage,
however, the storage space is not reserved. For example, you may have enough
storage space to start the continuous record, but you are still allowed to start a