Technical question concerning VOB's

mckeed · Post by **mckeed** » Sun Mar 21, 2004 11:00 pm

Ahh, didn't read your post correctly. Gomenasai. That should work in theory. Worth giving it a try. Bobdeinterlace might work as well if you put in the right paramenters.

trythil · Post by **trythil** » Mon Mar 22, 2004 12:22 am

Scintilla wrote:
SS5_Majin_Bebi wrote:On the topic of interlaced, whats a good AVS command to deinterlace PAL footage, that wont change the framerate as IVTCing does to NTSC footage?
Would just Telecide() do it? That worked for a pure 29.97 HuffYUV for me...

Telecide will deal with it, but it's really not cut out for deinterlacing interlaced video.

For material that's in the same field order all the way through, Donald Graft's KernelDeint AVISynth 2.5 filter is pretty nice. TomsMoComp supposedly does a good job, but I've not played with it enough to offer a personal impression. The SmoothDeinterlacer AVISynth filter also works well.

On a side note, Gunnar Thalin wrote a VirtualDub filter to handle incorrectly interlaced output when capturing PAL movies ( http://biphome.spray.se/gunnart/video/#deinterlacepal ). It's not AVISynth, but maybe someone will find it useful.

BTW: Deinterlacing filters are generally not sensitive to frame structure or frame rate. (There are a few, like Gunnar Thalin's special PAL movie deinterlacer, which are sensitive to such things, but not many.) Simple deinterlacing techniques (like bob) just separate fields and resize; more advanced adaptive techniques look for interlaced areas in the image and either interpolate or smooth. Neither class of filters are sensitive to frame rate, though, so therefore you can apply deinterlacing techniques used for NTSC interlaced video to PAL interlaced video, SECAM interlaced video...whatever.

I think that's right. Hopefully someone will correct me if it isn't.