Hi,

I'm trying, for quiet a time, to do a 25fps trailer base on a fly-by
rendered with PoV. But, I've always went up with a clip with an awful
flickering, it's like to see 2 pictures at the same time. I think I've tried
all th possible things,:
    - source in interlace, output in interlace
    - source in non-interlace, output in non-interlace
    - and all the possible combinaition
    - de-interlaced
    - 3:2 pulldown
    - etc...
It always end up the same : !!! FLICKERING !!!



Oh, I forget : I'm using TMPEnc to make a SVCD compliance MPEG-2, 480x576,
25fps. The animation is 12 seconds, with 300 frames, which makes it 25
fps...

Emmanuel


--


+++++++++++++++++++++++++++++++++++++++++++++++++
And remember, COOL is only three (3) letters away from FOOL.

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Do you use jitter?

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Probably some sort of Jitter. Maybe you specified jitter in something, like
an area light or media, or maybe the default AA jitter is doing it.

Crand will also do that, but I don't think anyone uses that anymore...

- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]

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Emmanuel Tatto wrote:
> 
> Hi,
> 
> I'm trying, for quiet a time, to do a 25fps trailer base on a fly-by
> rendered with PoV. But, I've always went up with a clip with an awful
> flickering, it's like to see 2 pictures at the same time. I think I've tried
> all th possible things,:
>     - source in interlace, output in interlace
>     - source in non-interlace, output in non-interlace
>     - and all the possible combinaition
>     - de-interlaced
>     - 3:2 pulldown
>     - etc...
> It always end up the same : !!! FLICKERING !!!
> 

> 
> Oh, I forget : I'm using TMPEnc to make a SVCD compliance MPEG-2, 480x576,
> 25fps. The animation is 12 seconds, with 300 frames, which makes it 25
> fps...

Looks like you are doing Pal encoding, so 3:2 pulldown is really of no use
for you. (it was made for NTSC 29.97 vs Movie 24).

Which hardware are you using to display the Mpeg2 ?
 (Because I experimented with H+ on TV and some (! not all) sequences
 do generate flickering of the lower part (about 1/3) when view on TV)

With Pov image source at 25 fps, you should use progressive source and
progressive output (a.k.a non-interlaced).

Does the flickering appears in a low action or a high action part of the 
movie ?

Have you enable VBR ? or are you still with CBR ?
What is bitrate when flickering occurs ? 


-- 
Non Sine Numine
http://grimbert.cjb.net/
Puis, s'il advient d'un peu triompher, par hasard,

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Yop, I'm using a RealMagic card to display on TV and Monitor the clip.
Well, I'm going to burn the SVCD and try on my DVD player to see if the
flickering's still there...

For complement : I'm using VBR, since CBR is bad crap on any DVD player ;
the flickering occurs at any bitrate, even at max 2.6MBit/s, which is the
max for SVCD standard, and the resolution is standard SVCD, i.e. 480x576,
for a PAL MPEG-2.


de news: 3C5FB811.3B3D73D5@atosorigin.com...
> Emmanuel Tatto wrote:
> >
> > Hi,
> >
> > I'm trying, for quiet a time, to do a 25fps trailer base on a fly-by
> > rendered with PoV. But, I've always went up with a clip with an awful
> > flickering, it's like to see 2 pictures at the same time. I think I've
tried
> > all th possible things,:
> >     - source in interlace, output in interlace
> >     - source in non-interlace, output in non-interlace
> >     - and all the possible combinaition
> >     - de-interlaced
> >     - 3:2 pulldown
> >     - etc...
> > It always end up the same : !!! FLICKERING !!!
> >

> >
> > Oh, I forget : I'm using TMPEnc to make a SVCD compliance MPEG-2,
480x576,
> > 25fps. The animation is 12 seconds, with 300 frames, which makes it 25
> > fps...
>
> Looks like you are doing Pal encoding, so 3:2 pulldown is really of no use
> for you. (it was made for NTSC 29.97 vs Movie 24).
>
> Which hardware are you using to display the Mpeg2 ?
>  (Because I experimented with H+ on TV and some (! not all) sequences
>  do generate flickering of the lower part (about 1/3) when view on TV)
>
> With Pov image source at 25 fps, you should use progressive source and
> progressive output (a.k.a non-interlaced).
>
> Does the flickering appears in a low action or a high action part of the
> movie ?
>
> Have you enable VBR ? or are you still with CBR ?
> What is bitrate when flickering occurs ?
>
>
> --
> Non Sine Numine
> http://grimbert.cjb.net/
> Puis, s'il advient d'un peu triompher, par hasard,

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No, I'm not using jitter or crand (I used to read a Help file when I'm
blocked ! ;-) )


3c5f4a33@news.povray.org...
> Probably some sort of Jitter. Maybe you specified jitter in something,
like
> an area light or media, or maybe the default AA jitter is doing it.
>
> Crand will also do that, but I don't think anyone uses that anymore...
>
> - Slime
> [ http://www.slimeland.com/ ]
> [ http://www.slimeland.com/images/ ]
>
>

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> No, I'm not using jitter or crand

Not even the default AA jitter?

- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]

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ney !!!


3c608acc$1@news.povray.org...
> > No, I'm not using jitter or crand
>
> Not even the default AA jitter?
>
> - Slime
> [ http://www.slimeland.com/ ]
> [ http://www.slimeland.com/images/ ]
>
>

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