Fixing a video recorded at non-60hz?

[Ghegs]

So I bought a Super Spacefortress Macross II PCB recently (yeah, the one we had at STGT some years ago) and turns out the game runs at 56Hz, according to MAWS. While my TVs don't have a problem with this, my DVD recorder does as all footage I get from it looks like this.

Is there any way to fix the scrolling in post, or is this just a case where I'd be forced to get some new hardware to get the recording part right, something that'll either record at 56Hz or ups the frequency to 60Hz?

[ED-057]

Well, it`s possible to run the video through a program which can stabilize the image, BUT... when the image is straddling the vertical retrace there is a small section of it that can`t be seen at all.
So a "fixed" version of the video would have a band of lagging image data constantly moving up the screen.

[Ghegs]

Alright, that's a start anyway. What's the program in question?

I've tried going through Avisynth functions, but haven't made any progress with those.

[ED-057]

What's the program in question?

I was speaking hypothetically. I don`t know if a program exists, but I could write one.

[Fudoh]

I don't think that you can fix this in post.

It's quite easy to fix before recording though. Take any upscaling device (e.g. a GBS8220, RGB to VGA) and any cheap scan converter. This will revert the video to 100% ntsc-conform 480i59.94Hz which your DVD recorder will gladly accept.

I wouldn't actually be surprised if you already had the neccessary hardware at home.

[Ghegs]

What kind of hardware are you talking about? Can you give examples and links?

Also, I'm using SCART all over the place (from supergun to scart switcher to DVD recorder) which might complicate things.

[StarCreator]

I don't think that you can fix this in post.

It's quite easy to fix before recording though. Take any upscaling device (e.g. a GBS8220, RGB to VGA) and any cheap scan converter. This will revert the video to 100% ntsc-conform 480i59.94Hz which your DVD recorder will gladly accept.

I wouldn't actually be surprised if you already had the neccessary hardware at home.

Out of curiosity, how would a scan converter handle the difference in refresh rate? Would it insert a duplicate frame every 14th frame?

[Fudoh]

RGB to VGA with something like this:
http://www.ebay.com/itm/CGA-EGA-YUV-VGA ... 4aae472545

and VGA to RGB with something like this:
http://www.ebay.com/itm/Super-Emotia-Ex ... 2c610d4196

The framerate conversion is handled in the upconverter, very likely on a field basis, not a frame basis, which smoothes out the conversion a lot.

[Ghegs]

Hmmmm. This one looks to be pretty much the same thing, only cheaper for a non-USer like me. Would something as small, simple-looking and cheap as this work for the VGA-to-RGB -part? Both are from China, too...

[Fudoh]

The upscaler is the same. The scan converter you linked should work, but the image quality isn't great. Also this one outputs 480i60 only, while an Emotia would output 240p60 - - which probably doesn't make a difference with your DVD recorder though.