• Panasonic Cameras

  P2 Transfer to an iPod and Other Tidbits

  Posted by Che on April 28, 2005 at 5:09 pm

  This is just an excerpt. Note the iPod comment towards the end of the article. Interesting!

  Transcribed from:
  Broadcast Engineering April 2005
  Hd Anachronism by Craig Birkmaier pg16

  In order to make the variable frame rate recording to tape possible, Varicam always uses the tape speed needed to record 720p at 60fps. For lower frame rates, the tape speed remains the same and each frame is recorded multiple times. Thus, the in-camera storage requirements are the same for any frame rate: when files are transferred to hard disk, the redundant frames are removed. Recording to solid-state memory has the advantage that each frame is only stored once. When shooting 60p, the storage rate would be the full 100Mb/s. At 24p, however, the storage required would be 24/60th of 100Mb/s, or 40Mb/s. Thus, the recording capacity of a P2 storage module would more than double when shooting 24p.

  When Panasonic introduced the P2 product line, it noted that the write speed for all P2 storage modules would be sufficient to support future HD products as well as faster-than-real-time file transfers. Current 2GB storage modules have a transfer rate of 320Mb/s, while the 4GB modules (and all future higher capacity modules) have a transfer rate of 640Mb/s. Panasonic expects to begin shipping 8GB modules this fall.

  Ultimately, what is stored on P2 modules needs to be moved to hard disk for processing, and logically to optical disc or digital tape backup for archival storage. Early adopters have been using the portable P2 drive to move files from P2 modules to some kind of hard disk storage in the field. One of the more popular target drives for this application is an Apple iPOD, which has both IEEE-1394 (Firewire) and USB 2.0 I/O.

  In February, Panasonic announced the P2Store, a 60GB hard disk with an integrated P2 memory card reader. This P2Store is designed to attach to your belt. When you want to move the contents of a P2 module to the hard drive, you plug in the module and hit a single button to move the contents: the drive can be hooked up to a computer to process the files or to move them to another storage device.

  A link the the P2Store (at bottom of page):
  https://www.p2info.net/articles/misc/morep2hardware.php

  Che

  Che replied 21 years, 2 months ago 1 Member · 0 Replies
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