POV-Ray : Newsgroups : povray.binaries.animations : waving flag with motion-blur Server Time
22 Dec 2024 11:30:54 EST (-0500)
  waving flag with motion-blur (Message 1 to 6 of 6)  
From: Kenneth
Subject: waving flag with motion-blur
Date: 28 Feb 2009 22:05:01
Message: <web.49a9fad36c7b9ce6f50167bc0@news.povray.org>
My first POV-Ray animation. It's an .avi MPEG file, made using the monkeyjam app
and the Xvid video compression codec. I had to heavily compress it, to get it to
fit within the newsgroup's 700K file-size limit. The 'cloth' look of the flag
didn't reproduce well as a result.

I discussed this animation in a separate thread. Please post any comments
there...

http://news.povray.org/povray.binaries.images/thread/%3Cweb.49a9ca8c64fd75ebf50167bc0%40news.povray.org%3E/

I'm mostly curious to find out if this animation plays on everyone's
systems. The Xvid codec didn't come with my Windows XP machine; I had to
download it.  I don't know if it's standard on more modern computers. If not,
you can download it here...

www.xvid.org

Ken W.


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Attachments:
Download 'flag_full_blur_d.avi.dat' (693 KB)

From: clipka
Subject: Re: waving flag with motion-blur
Date: 1 Mar 2009 05:40:00
Message: <web.49aa65c99f77899074c3e19a0@news.povray.org>
"Kenneth" <kdw### [at] earthlinknet> wrote:
> I'm mostly curious to find out if this animation plays on everyone's
> systems. The Xvid codec didn't come with my Windows XP machine; I had to
> download it.  I don't know if it's standard on more modern computers. If not,
> you can download it here...

plays perfectly fine on my machine (though I know I did download & install that
codec manually, too, some while ago).

The motion blur looks perfect to me. Feels to me like stills from a DVD
typically have even stronger MB.


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From: Chambers
Subject: Re: waving flag with motion-blur
Date: 1 Mar 2009 17:07:05
Message: <49ab0709$1@news.povray.org>
On 3/1/2009 2:39 AM, clipka wrote:
> plays perfectly fine on my machine (though I know I did download&  install that
> codec manually, too, some while ago).

Plays great on my machine, too.  Although XVid is not "standard" in that 
it doesn't come with Windows, it IS "standard" in that almost everyone 
who does anything with video has it.

> The motion blur looks perfect to me. Feels to me like stills from a DVD
> typically have even stronger MB.

I think that's because they're interlaced, so you see the MB from two 
different frames at the same time.

-- 
...Chambers
www.pacificwebguy.com


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From: clipka
Subject: Re: waving flag with motion-blur
Date: 1 Mar 2009 18:05:01
Message: <web.49ab13979f7789902ddf2a340@news.povray.org>
Chambers <ben### [at] pacificwebguycom> wrote:
> > The motion blur looks perfect to me. Feels to me like stills from a DVD
> > typically have even stronger MB.
>
> I think that's because they're interlaced, so you see the MB from two
> different frames at the same time.

Yeah, that makes sense.


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From: Kenneth
Subject: Re: waving flag with motion-blur
Date: 1 Mar 2009 19:55:01
Message: <web.49ab2e359f778990f50167bc0@news.povray.org>
"clipka" <nomail@nomail> wrote:
> Chambers <ben### [at] pacificwebguycom> wrote:
> > > The motion blur looks perfect to me. Feels to me like stills from a DVD
> > > typically have even stronger MB.
> >
> > I think that's because they're interlaced, so you see the MB from two
> > different frames at the same time.
>
> Yeah, that makes sense.

And also, I think, because of the "2:3 pulldown" method of transferring 24fps to
30 'fps' video (in the 'States.) The sum total of which probably looks like
additional blur, but only once every 2 (or three?) frames. Interestingly, what
I've read on-line is that DVDs themselves don't incorporate this telecine
'transfer method'--the DVD is recorded at 24 fps, 1:1 with the film speed--but
then the DVD player itself imposes the "2:3" thing, so that the player's output
is compatible with regular television. That was a new discovery for me, and
different from how VCR videotapes used to be transferred.

KW


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From: Kenneth
Subject: Re: waving flag with motion-blur
Date: 2 Mar 2009 03:05:00
Message: <web.49ab90aa9f778990f50167bc0@news.povray.org>
Chambers <ben### [at] pacificwebguycom> wrote:

>
> Plays great on my machine, too.  Although XVid is not "standard" in that
> it doesn't come with Windows, it IS "standard" in that almost everyone
> who does anything with video has it.

Good to know!  Thanks for the feedback.

BTW, I sent this animation to a friend who has a modern Mac, and he reported
that it plays well, too. (He's not well-versed in codecs or MPEG and didn't know
anything about Xvid.) So perhaps Macs come with it pre-installed.

KW


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