Avid Technology AirSpeed series, Инструкция по установке и эксплуатации

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Play While Transfer
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Play While Transfer
Play While Transfer (PWT) allows the AirSpeed Multi Stream to playout media after
approximately 20 seconds of media has been transferred from the shared storage. The
transfer of the entire clip from the Avid editing system is not required with this option.
The following applies with regards to Play While Transfer:
• When PWT is selected, the clip is available for playout when 20 seconds of media has
been transferred. This allows the clip to be played before the transfer of the clip is
complete.
• If a group of clips are selected in an editor, only one clip can be designated as a PWT.
Sending multiple PWTs requires separate STP transfers.
• AirSpeed Multi Stream supports up to four simultaneous Play While Transfers (PWTs),
although PWT transfers happen even if four transfers are in progress. You might see up
to eight transfers in progress at one time if this occurs. If there are no PWT transfers,
you will have a max of 4 transfers at one time.
• Items that are either transferred or in progress will display in the AirSpeed Multi Stream
database window and will be playable if they have a duration of at least 20 seconds.
• The priority is always on playout. The highest priority clips in the system are clips that
are transferring and playing at the same time. If the Playout point is close to the end of
the currently transferred media, the system will speed up the rate of transfer for that clip.
• Selecting the PWT option from the editor when sending a clip for playback causes this
transfer to begin as soon as is possible. PWT items will have a priority in the transfer
queue and occur before existing non-PWT items in the queue.
• PWT is not supported for DNxHD 185220 clips.
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The PWT feature is designed for time-sensitive playout needs and is not recommended
for all of your playout media to the AirSpeed Multi Stream.
Play While Record
The Play While Record (PWR) feature enables you to start recording a clip in SD or HD on
one channel, and then begin to play the same recording out of another channel after 20
seconds. In a PWR workflow, the recorded media will continue to transfer to the shared
storage and be checked into Interplay.
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For MPEG-2 HD models, you can perform a maximum of two Play While Records (PWRs)
at the same time on one AirSpeed Multi Stream. For SD models, we support only one PWR at
a time.