POV-Ray : Newsgroups : povray.macintosh : Problem with Quicktime files Server Time
25 Oct 2021 22:10:38 EDT (-0400)
  Problem with Quicktime files (Message 1 to 4 of 4)  
From: tpwaterh
Subject: Problem with Quicktime files
Date: 25 Jun 2004 18:30:01
Message: <web.40dca65c932f7fd23e7b70250@news.povray.org>
When I use POV-Ray to render an animation into a QuickTime file, the movie
comes out just fine and I can play it in QuickTime Player with no problems.
 BUT - if I then scp the file to my website and download it in Safari, I
get an error message from QuickTime - "Could not open the file ... because
it is not a file that QuickTime understands."  This happens even if I scp
the file back to my Mac.  In fact, I can take a working .mov rendered by
POV-Ray, scp it to another machine, scp it back, and run diff to verify
that the files are completely identical - and yet the downloaded version
won't work with QuickTime.  How is this possible?  What's going on?


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From: Thorsten Froehlich
Subject: Re: Problem with Quicktime files
Date: 26 Jun 2004 04:16:24
Message: <40dd30d8$1@news.povray.org>
In article <web.40dca65c932f7fd23e7b70250@news.povray.org> , "tpwaterh" 
<tpw### [at] alumniuwaterlooca> wrote:

> When I use POV-Ray to render an animation into a QuickTime file, the movie
> comes out just fine and I can play it in QuickTime Player with no problems.
>  BUT - if I then scp the file to my website and download it in Safari, I
> get an error message from QuickTime - "Could not open the file ... because

POV-Ray is not meant to create QuickTime files for web display directly.  It
is meant to create QuickTime movie files for easy post-processing.  The
QuickTime movie output is only useful if you export with a high-quality
codec and then compress the files for web streaming later on.

> How is this possible?  What's going on?

Use the QuickTime Player File menu Export option.  Please read the QuickTime
documentation how to create web-ready QuickTime movie files.

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org


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From: tpwaterh
Subject: Re: Problem with Quicktime files
Date: 26 Jun 2004 19:05:01
Message: <web.40de007a60236aa43e7b70250@news.povray.org>
I thought of that too, but QT Player 6.5.1 doesn't have an Export command.
I was able to get a working print by feeding my movie through iMovie, but
the results weren't very satisfactory; it dropped every second frame,
regardless of the codec I used.


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From: Thorsten Froehlich
Subject: Re: Problem with Quicktime files
Date: 27 Jun 2004 10:51:08
Message: <40dededc@news.povray.org>
In article <web.40de007a60236aa43e7b70250@news.povray.org> , "tpwaterh" 
<tpw### [at] alumniuwaterlooca> wrote:

> I thought of that too, but QT Player 6.5.1 doesn't have an Export command.

Ah, forgot, you need QuickTime Pro for that.  It is a good idea to have
(unless you have some other movie editor - iMovie is for editing digitized
video) if you want to publish video on the web to have a tool to compress
movies for optimal playback online.  POV-Ray can only store one frame after
the other, and it has to close and reopen the movie after every frame in
order to allow recovery in case you abort a render.  As such, movies created
by POV-Ray will never be efficiently compressed anyway - that is also why
you should select a lossless (i.e. PNG) or not very lossy compressor (Motion
JPEG with low compression) when selecting QuickTime movie output in POV-Ray.
You can then feed that movie to a program to do a final and very effective
compression using a compression method much more suitable for web use (in
particular MPEG-4 or Sorensen).

If you have Classic, you could try to use the older MooVer to do this.  It
will allow you to compose single frames POV-Ray will render if you select
any other output file format; and MooVer will turn them into a movie:
<http://www.geocities.com/SiliconValley/Horizon/4977/espsw/moover.html>

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org


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