Capture from old 1" master tape to ProRes - more patterning throughout

[TenementLady]

Oops, obviously meant moiré pattern.

I've seen a similar thing before when a VHS tape was captured from an S-VHS deck with incorrect settings.

Any suggestions? Here's a close-up sample.

[CaptureCraft]

It happens when luma and chroma are mixed.
Usually when you send composite signal to luma channel in S-video connection.
Most common scenario is when output SCART is not switched to S-Video.

[TenementLady]

Thanks, I'm wondering what might be causing it in this instance. The 1987 1" analog tape goes through a Snell & Wilcox TBC. Something must be wrong with the settings?

[CaptureCraft]

I don't know. The first rule of debugging is to exclude from your chain everything you can.
Connect your VCR directly to your capture card and see.

[TenementLady]

It's not actually a VCR, it's a 1" reel to reel studio tape deck. The same thing also happened with a Umatic tape capture.

[CaptureCraft]

It's not actually a VCR, it's a 1" reel to reel studio tape deck. The same thing also happened with a Umatic tape capture.

It doesn't matter. Connect directly. If the moire still happens, provide details about how it is all connected. What are the settings on your capture card.

[TenementLady]

OK, thanks. Will do.

[The_Doman]

Oops, obviously meant moiré pattern.

I've seen a similar thing before when a VHS tape was captured from an S-VHS deck with incorrect settings.

Any suggestions? Here's a close-up sample.

This looks very similar to this problem/phenomenon:

S-Video checkerboard pattern (SCART to S-Video incorrect settings)

HR-S6850 SCART to SVideo DazzleDVC100 L1/SCART output set to S-Video:

[Attachment 79683 - Click to enlarge]
HR-S6850 SCART to SVideo DazzleDVC100 L1/SCART output set to Video:

[Attachment 79684 - Click to enlarge]

[CaptureCraft]

Yes, but... 1" reel to reel studio tape does not have S-video.

[dellsam34]

I would connect the tape deck directly to a TV and go from there. Not enough information to guess, What's the capture workflow and what S&W converter you're using?

[Sharc]

@OP: Low quality S-video cables (means all of these thin cheap variants) do also introduce similar artifacts due to their Chroma->Luma crosstalk. Check for double-screened cables. Stay away from cheap cables where the screening is not explicitly stated in the datasheet.