POV-Ray : Newsgroups : povray.binaries.animations : Mpeg1 Test Server Time
1 Nov 2024 01:22:02 EDT (-0400)
  Mpeg1 Test (Message 1 to 4 of 4)  
From: Sebastian H 
Subject: Mpeg1 Test
Date: 5 Dec 2005 17:18:11
Message: <4394bca3@news.povray.org>
Hello

Finally I managed mpeg2enc to create a mpeg1 animation
out of some png's. The Scene contains some Isosurfaces,
a sphere wrapped around a sphere and a ground made of dies.
It's loop animation of the ground waving a bit.
Could someone please tell me if there occur problems
on playing this piece?

Thank you very much
Sebastian


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Attachments:
Download 'rsocp_05d.m1v.mpg' (337 KB)

From: Daniel Hulme
Subject: Re: Mpeg1 Test
Date: 5 Dec 2005 17:32:25
Message: <20051205223326.11ac2405@surreal>
> Could someone please tell me if there occur problems
> on playing this piece?
It plays fine here (xine on debian/sid amd64), but the sphere looks
decidedly non-spherical. According to the info page, the res is 160x90
but the aspect ratio is set to 2.3704 (>> 1.77...), which would explain
why it is stretched.

-- 
"And  what if  I assign  a  hundred  programmers  to  it?"   The  master
programmer shrugged. "Then the design will never be completed," he said.
http://www.google.com/search?q=%22pgp+singing%22  <-- childish but funny
http://surreal.istic.org/ <-- It's like a DEATH CIRCUS! | keyid 885b170d


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From: Sebastian H 
Subject: Re: Mpeg1 Test
Date: 6 Dec 2005 02:41:34
Message: <439540ae@news.povray.org>
Daniel Hulme wrote:
>>Could someone please tell me if there occur problems
>>on playing this piece?
> 
> It plays fine here (xine on debian/sid amd64), but the sphere looks
> decidedly non-spherical. According to the info page, the res is 160x90
> but the aspect ratio is set to 2.3704 (>> 1.77...), which would explain
> why it is stretched.
> 

Daniel, thank you very much.
This is weird.
MPlayer plays it fine with 160x90 which is the intended resolution
but the Gnome-Preview scales it with this 2.37 aspect ration.
Digging in mpeg2encs Docs I found this:
...
For MPEG-1 mpeg2enc infers the MPEG-1 pixel aspect code from the video 
norm specified and the specified playback aspect ratio.
...
So the given aspect ratio is silently overridden with something else.
Great...

I'll post an other try later.

Regards,
Sebastian


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From: Sebastian H 
Subject: Re: Mpeg1 Test
Date: 6 Dec 2005 03:06:44
Message: <43954694@news.povray.org>
Sebastian H. wrote:

> Could someone please tell me if there occur problems
> on playing this piece?

Ok here's another version, this time with correct aspect ratio.
The resolution should be 160x90 (16:9 obivously).
Not setting the aspect ratio manually with mpeg2enc -a 3 help.
Who knows why...

Regards,
Sebastian


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Attachments:
Download 'rsocp_05d_160x90.m1v.mpg' (147 KB)

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