M-X Artifacts?

[Anthony Bagley]

Halfway through a 10-week shoot for ITV Studios (UK) on M-X... and had a few of the following (attached) glitches:

Only on for a single frame - sometimes two, with the second frame being the same but blue. I contacted Red and it was suggested it was a cable issue... the thing is, footage has been transferred using two different machines with different cables (which have been changed following Red's advice) and it would appear that the only common element in this is the camera...

Has anyone seen anything similar on M-X footage? We are shooting 4K 16:9 RC36 25fps...

[Dan Hudgins]

Is the cable you are talking about between the harddrive and the computer?

If so, what about the cable between the camera and the harddrive(s)?

Because the screen is split it looks like a X address related data bit error, why else the clean break?

The RED drives are 2x EIDE/PATA are they not, does the EIDE have an address pin? The now and then errors might be from that intermittent pin, if they split the image half a line in one drive and the other half in the second drive, does anyone know how the data is RAIDed?

You might take the EIDE/PATA cables off the drives and push them on a few times to see if that helps?

[Jay Gannon]

I dont think anyone has used EIDE for a good few years now.

It does look like a drive cable problem, always have a few spare to check through them. That goes for RED Drive to the Cam and drive to computer.

[Dan Hudgins]

I dont think anyone has used EIDE for a good few years now.

Some people opened their reddrive before and I thought it had two EIDE/PATA drives in it, has RED changed what's in the reddrives?

[Deanan]

Anthony, can you email me directly?
deanan@red

[Nir Shelter]

What were you recording on in camera HDD or CF?

Looks similar to the CF color error that used to happen with the old version CF module.

[Anthony Bagley]

Sorry - should have mentioned in the post that the cables I refer to are FW800. I am given the drives by the loader so am not sure if the camera team have swapped any cables around on the body itself. And that we are using 2 x Red Ram drives for the most part.

[conrad gaunt]

Nearly every problem I've ever had with a R1 has been "drive cable" related (cam to red drive). If the problem is in the R3D file, I'd say thats the problem. I carry several of those with me at all times. If it was a problem with the offloading cables, the file would likely not play/decode at all.

Because the cable s stick out the back of the camera, often they get damaged when people take the camera to the floor and tilt back. They are hard to make and easy to break. The six foot ones can be a nightmare, I avoid them like the plague. If you're using any of those, I recommend stopping that practice and using the shorter, easier to manufacture/QC shorter ones.