Corrupt P2 Files?

S

sean_mcgee

New member
Hi,

First off, I've been working with P2 cameras and files for a couple of years with Final Cut Studio 2 (FCP6). I have never run into this problem, and just can't seem to solve it.

I have a raw P2 folder that was copied from a P2 card that has what I am going to call "corrupt" files. (The P2 Card has since been re-formatted several times and reused.) Here is what basically happens: when the corrupt files are played back, audio is fine, but video is, as best as I can describe, like colored pixelated snow. The first 10-20 (or more) clips will be perfectly fine, and then at some point, one file will start out fine and in the middle become "corrupt." Each file after this file is completely corrupt.

Like I said, audio is perfect, thumbnails are displaying properly, but video is completely garbled. This is the case in several P2 folders on this particular project.

I have tried everything I can think of. P2CMS, third-party P2 conversion software, third-party P2 repair software. Nothing is working.

(Just as an added detail, when the clips try to play back in P2CMS, the same problem exists with the "colored snow". However, P2CMS gives an error of something along the lines of "There was an incompleteness in the clip." Whatever the ___ that means.)

Here are some details as to my setup: Final Cut Pro 6.0.6, Mac OSX Snow Leapord, Latest versions of P2 drivers, (I have both an Intel Mac and a G5 Mac, and am having the same issue on both.)

Have any of you ever come across this before?
 
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I have experience this from time to time and it's a result of one of two situations: 1) card was ejected during recording 2) power to the camera was temporarily cut during the recording.

However, the fact that is happened across many folders gives me pause.
 
We've had reports of this in the past, and the issue is data corruption during copying of the files to the computer. You should always be using a data-verifying copy program, to eliminate the possibility of this happening. Search for "the glitch" for more discussion on this.
 
Thanks for the replies.

We found out from our field producer that he watched the clips in question off of the field drive and that they were just fine.

Those drives were erased, but not overwritten, so a data recovery guy is going to retrieve the info off of the field drives.
 
So the field drives were different copies? The cards were copied to two different drives? If so...

1) congrats on using the proper offload technique of redundancy for safety's sake, and

2) you would appear to have an ideal test bed for figuring out why in the **** this happens. If you have consistently corrupted clips on one drive, and good clips on the other, and both copies were done from the same cards, then -- what was different? Was one an internal drive and one an external? Was one copied on Windows and the other on a Mac? Was one a USB drive and the other a firewire drive? Any diagnostics you can provide would be quite interesting!
 
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