pal and ntsc vcd

[zerohash]

DearSir,

Does a vcd follow PAL & NTSC format after encoding or it just remains a vcd format.

Suppose i encode a NTSC Format DVD in my encoder and selecting NTSC while encoding.Will the VCD play in a PAL only TV after Burning in a VCD Format.

Or i will have to convert the DVD in Pal and do the encoding in PAL to see in Pal only TV.

Thanking You.

Zerohash

[Kika]

If you realy have a PAL-only-TV (must be an old or cheap one), you have to convert from NTSC to PAL.

[ppera2]

Some DVD players can playback NTSC as PAL via internal conversiom.
You should try, and will see...

[Kika]

That's right, but you won't get smooth Movement in the Video by using this Methode.

[ppera2]

Right.
However, we don't have way to get perfect conversion, especially not for VCD - no fields.

[MvB]

This conversion thing you talk about is not a PAL60 conversion. Because a PAL60 conversion gives you smooth movement. Only the color-carrier will be changed from ntsc to pal, so that you have colors on your PAL TV. Everything else is no conversion for me, it's just putting out PAL and playing NTSC without synchronising the speed and without removing the interlaced Pulldown-Frames. that won't give smooth movement.

[ppera2]

MvB:

You try to say to me that 30 fps pseudo PAL output is less smooth than pure NTSC? That has no sense - color encoding has nothing with speed sync., with interlace etc.

But we have more situations here: some players will output 25 fps by dropping frames - this will be nonsmooth of course, but perhaps TV can't work at 30 fps...

If pure NTSC is in case, what is more often case by VCD (music discs), then no pulldown. How you will make conversion then? To get smooth movement?

Finally, when we talk about smooth movement, 3:2 pulldown is far from perfect in that.

[MvB]

You try to say to me that 30 fps pseudo PAL output is less smooth than pure NTSC? That has no sense - color encoding has nothing with speed sync., with interlace etc.

No. There seems to be the problem that a awfull lot of dvd player don't have PAL 60 Output. In PAL 60 you can watch NTSC movie like you would in NTSC, it has 30 fps and the samge resolution so only the color carrier is changed. That gives you the same "smooth" playback as if you would watch the movie in NTSC directly.
But if you try to play a NTSC source with 25 fps while preserving the runnig speed it's totally natural the the output isn't smooth.


This applies to interlaced material and to progressive material with pulldown.

Normally all better vcrs have this PAL60 conversion build in. It's called 'NTSC Playback' then.

[ppera2]

MvB:

We actually talk same thing. But I was focused on conversions made on PC, with adequate software, not in hardware players.

[Bubba]

zerohash,

I noticed the last year or so, most Chinese-made DVD players (i.e. Apex, Sampo, Norcent, etc.) have either:

1. a button on their remote control to switch between PAL or NTSC system
2. a setup menu, that you can choose which system (PAL or NTSC) you want to output

I don't know the current Japanese DVD players having these features or not, but in the past most of them did not.

Cheers,