logo Sign In

Problems with PAL MiniDV capturing and interlacing

Author
Time

I've been using the JVC GR-D70EK PAL MiniDV camcorder as a pass-through capture device with my Mac and out of curiosity, I wanted to see how it would fare with the 97SE LD PAL set on my Pioneer CLD-D925 player.

imagebam.com

imagebam.com

As you can see by viewing the images in their full size version, there's a substantial amount of pixellation, particularly around the lightsaber and there's also a problem with the vertical frame. 

I suspected that the camcorder might be faulty so I tested it with several other devices that have composite outputs - a SNES, an N64, a Gamecube and a VCR. The SNES exhibited similar problems as the LD player during capturing but all the others were fine. 

There's something about the video signals generated by the SNES and the LD player that the camcorder is unable to handle properly. Has anyone else encountered a similar problem and if so, is there anyway to correct it, or is it just one of those things?

Also, all my MiniDV captures suffer from interlacing issues, I've done some reading up on the matter (http://www.100fps.com/video_resolution_vs_fluidity.htm) but I'm still confused.

What am I doing wrong here?

“Logic is the battlefield of adulthood.”

  • Howard Berk
Author
Time

I'm not sure for definate, but it looks like the image i would get when playing PAL disks with the player or the capture card set to PAL 60 mode. I no longer have player or disks to check, though.

“Ow! It`s hot in here, the butter in my pocket is melting!”

Author
Time

Yeah, some sort of problem with frame height not being properly recognized. The gibberish near the bottom is the vertical blanking interval, which should be at the top of the video frame and outside the captured area, not visible.

The SNES issue is probably unrelated and due to incompatibility with its non-standard 288p signal. The N64 should have that same problem with most games but perhaps you played one of the few SD games.