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Posted by Pat Horridge on 05/17/06 13:16
"Franc Zabkar" <fzabkar@iinternode.on.net> wrote in message
news:k5ik62lmocpjr15vk0olpugagvanv329mn@4ax.com...
> On Tue, 16 May 2006 05:39:06 GMT, "Den Murray" <nul@nul.nul> put
> finger to keyboard and composed:
>
>>I've got a Cyberhome DVD300 which plays back PAL DVD's with NTSC output.
>>The only problem is that the playback is a bit jerky. Is the jerkiness a
>>function of the PAL - NTSC conversion, or, of the cheap DVD player?
>
> AFAIK, frame rate conversions mean that frames are either added or
> dropped, depending on whether you are going from PAL to NTSC or vice
> versa. This results in jerkiness during fast motion scenes, eg car
> chases, sports, etc.
>
> - Franc Zabkar
> --
> Please remove one 'i' from my address when replying by email.
There are different ways of doing the conversion. Some just change the
colour system but keep the frame rate the same.
Allowing the TV to run at that frame rate but using it's native colour
system. These will look smooth and nice.
The other way is to duplicate 1 frame in 5 making 30 for every 25. This will
look jerky but allows the video to played on a TV that doesn't suport PAL
frame rate.
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