Digital Glitches in my AF100 footage

[Basia]

Hello everyone,

I shot a talk with the AF100, on 1080/24p settings. When I used Log and Transfer to create ProRes 422 clips, there are several glitches in the resulting clips. It seems the glitches are a result of the transcoding, because when I transcoded the clips twice the glitches showed up in different places in the files. I used the same camera/computer/workflow in a previous project and didn't notice anything like this. Anyone have any ideas? Here are links to 2 short clips where the glitches are visible.

http://dl.dropbox.com/u/23034803/Digital%20Glitch.mov

http://dl.dropbox.com/u/23034803/OTH...27S%20FACE.mov

In the first, the glitch appears in the window behind the interviewee. This "matrix" like glitch that recalls the days of tape, only happened a few times in my first ten minutes of interview.

The second example is on the man's face, and it looks like a different kind of thing. Thanks very much for any help.

[Bern Caughey]

What computer are you using?

I believe there was some early issues with MacBook Pro(s).

[Basia]

I'm on a MacBook Pro- if it's an issue with the computer it's strange because I didn't have it on the last film that I used this computer to edit. I have a MacPro as well...on which FCP crashes every time I try to use Log and Transfer. I guess if I can't fix this on my laptop I'll have to try reinstalling, etc on the desktop and see if I have better results there. Anyway, I'm trying it all again on my laptop now. I'm really hoping it's not a problem with the original AVHD files (though it doesn't seem to be based on the fact that the glitches come in different points in the footage.) Thankfully it was a short shoot! Thanks for your help.

[jmarkham]

What's the speed of your harddrive? If you're importing to the internal drive,
that's likely your problem (as they're usually 5400 RPM drives).

Try a FW800 external drive and create a Scratch and Render folder on the FW drive.
Make sure it's a 7200RPM drive and using FW800. Create a new project .. save it
to your FW drive .. and then do your Log and Transfer.

jeff

[Basia]

Thanks jmarkham- this is my laptop info:

Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 8 GB
Bus Speed: 1.07 GHz

Unfortunately I don't think that's going to help because I already have once tried to use my external drive as a scratch. I will try again, maybe putting the AVHD original files on the external drive as well will help? I just keep getting glitches in all different places- very frustrating.

Thanks

[Bern Caughey]

If need be you could use ClipWrap to transcode.

[jmarkham]

Thanks jmarkham- this is my laptop info:

Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 8 GB
Bus Speed: 1.07 GHz

Unfortunately I don't think that's going to help because I already have once tried to use my external drive as a scratch. I will try again, maybe putting the AVHD original files on the external drive as well will help? I just keep getting glitches in all different places- very frustrating.

Thanks

I have a very similar configuration .. I'll try importing some AVCHD and see what happens.

We're moving to Premiere (which seems to handle AVCHD much better that FCP7 does).

jeff

[SephSharp]

Hi Basia

i experienced the same problem when using my macbook pro with a similar spec.

it seems to happen intermittently but only when using the internal drive as a capture scratch.

Joe

[SplitFieldDiopter]

It's the Macbook Pro.

I started this thread.....

http://www.dvxuser.com/V6/showthread...th-Macbook-Pro

[tacotim]

I see this consistently on my macbookpro. Doesnt seem to matter what hard drive is used. It does not happen if I use clipwrap.

Log and transfer works fine on my desktop.