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Importing MXF files from Nano Flash drives.

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We're sending all out crews that shoot stereoscopic footage out with cameras that record onto Nano Flash drives. The Nano's record onto CF cards at 100, 140, 180, 220, or 280 Mbps and can record MXF files or MOV files. We have the crews record MXF files to significantly reduce import time. For example a full card, about 80 minutes of footage, recorded at 100Mbps will come into the Avid in about 35 minutes if recorded MXF but will take about 11 hours if recorded MOV. The MXF files can't just be dragged into the MXF folder on Unity and have the Avid recognize the file natively, it has to be through the import dialog.

We're bringing the footage in on v3.13 MC's, a 4.0.5 Symphony and a 5.? MC using import. We can't use AMA since most of our offline systems are v2.5.

What I'm wondering about is what resolution the Avid is really bringing the media in at. In all our systems when we set the Video Resolution to either DNxHD 220X MXF or 1:1 10b MXF and them import the footage, when we look at the video heading it says XDCAM HD 50Mbits(1080p/29.97). I then ran a test and set the Nano's to record at 180 Mbps and at 280 Mbps and then imported that footage. Again the Avid says it's video is the XDCAM HD 55.

If we import the MOV files they come in at 220X just like we asked the Avid to do

So, is the Avid truly bringing in the media at a 55Mbts rate or is that just the header that the file is wrapped in and it's really 220X? I haven't had a chance to shoot 2 identical shots to look at a quality difference between MXF and MOV since the camera is out in the field.


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