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GFCAM Media
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The GFCAM video file directory stores MXF files regulated by SMPTE 390M (MXF OP-Atom)
and SMPTE 381M (MXF mapping MPEG streams into MXF GC). If a video clip needs to split,
such as under the FAT32 file system, the system creates multiple MXF files for that clip.
The GFCAM audio file directory stores MXF files regulated by SMPTE 382 (MXF mapping
AES3 and BWF into the MXF GC). Each file has an AES channel that consists of two audio
channels. For example, the system creates two MXF files from two AES channels (four audio
channels). If an audio clip splits, the system creates multiple audio files for that clip.
Connecting the GFPAK Device
You connect the GFPAK directly through an industry-standard USB 2.0 port on your computer.
Use a cable to connect the GFPAK to a Windows system or a Macintosh system.
The GFPAK mounts as individual media drives on your desktop and then link to your Avid
editing system through AMA.
Spanned Clips and GFCAM
GFCAM allows gapless recording over several GFPAKs, however, each GFPAK handles the
contents as a separate clip. If you record across three GFPAKs, you create three separate clips.
You can then edit those clips together into one continuous sequence.
Copying GFCAM Files to a FireWire or Network Drive
After you mount the GFPAK, you can copy the GFCAM media to a FireWire drive or a network
drive and then eject the GFPAK. You might find it convenient to copy several GFPAKs to other
drives so you can reuse the GFPAK. Your Avid editing application supports GFCAM copies as
though they were actual GFPAKs.
You can connect a FireWire drive, for example, and store the contents of several GFPAKs on the
drive so you can keep using the GFPAKs in the camera.
To copy the GFPAK to another drive:
1. On the drive, set up a folder for each GFPAK you want to copy.
Avid recommends that you do not place the media folder at the top level of the drive.
2. Give each folder a unique name that identifies the GFPAK.
The name does not have to be the same as the actual GFPAK name.
3. Navigate to the actual GFPAK and select the contents of the folder.