| Re: creating MPEG in IDL [message #51747] |
Wed, 06 December 2006 16:15  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Brian Larsen writes:
> I don't have a license for IDLgrMPEG so I can't test this out :(
Licenses are free for the asking.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: creating MPEG in IDL [message #51749 is a reply to message #51748] |
Wed, 06 December 2006 14:47  |
Kenneth Bowman
Messages: 86
Registered: November 2006
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Member |
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In article <1165444518.289665.290400@f1g2000cwa.googlegroups.com>,
"kostis" <kostiskaz@gmail.com> wrote:
> I have a sequence of plots which i want to convert to an mpg video
> However, the quality of the mpg created is very bad in comparison to my
> plots.
> How can i increase resolution??
> So far i only managed to change the x and y size of my picture.
>
> I use the following code:
>
> nfr=frames
> xsize=1000
> ysize=1000
> mpegID=MPEG_OPEN([xsize,ysize])
> ......
> (here i do the plotting)
> ......
> mpeg_put,mpegID,WINDOW=0,FRAME=it-1,order=1
> endfor
> MPEG_SAVE,mpegID,FILENAME='movie.mpg'
> MPEG_CLOSE,mpegID
>
> Thanx in advance!!
Here are some suggestions aimed at Macs running OS X, but some of this
software runs on other systems as well
http://idl.tamu.edu/mactips/movies.php
Ken Bowman
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| Re: creating MPEG in IDL [message #51756 is a reply to message #51749] |
Wed, 06 December 2006 15:34 |
Karl Schultz
Messages: 341
Registered: October 1999
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Senior Member |
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On Wed, 06 Dec 2006 14:35:18 -0800, kostis wrote:
> I have a sequence of plots which i want to convert to an mpg video
> However, the quality of the mpg created is very bad in comparison to my
> plots.
> How can i increase resolution??
> So far i only managed to change the x and y size of my picture.
>
> I use the following code:
>
> nfr=frames
> xsize=1000
> ysize=1000
> mpegID=MPEG_OPEN([xsize,ysize])
> ......
> (here i do the plotting)
> ......
> mpeg_put,mpegID,WINDOW=0,FRAME=it-1,order=1
> endfor
> MPEG_SAVE,mpegID,FILENAME='movie.mpg'
> MPEG_CLOSE,mpegID
>
> Thanx in advance!!
You might try using the IDLgrMPEG object and set FORMAT to 1 to get MPEG2.
Karl
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| Re: creating MPEG in IDL [message #51758 is a reply to message #51749] |
Wed, 06 December 2006 15:04 |
Brian Larsen
Messages: 270
Registered: June 2006
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Senior Member |
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In my experience the best thing is to write out each image to jpg, gif,
png whatever with numeric names and then use quicktime pro (yes its $30
but it does the best job). One can also use ImageMagick and a few
others. I think this was mentioned recently do a quick search of the
usenet group.
Cheers,
Brian
On Dec 6, 3:35 pm, "kostis" <kostis...@gmail.com> wrote:
> I have a sequence of plots which i want to convert to an mpg video
> However, the quality of the mpg created is very bad in comparison to my
> plots.
> How can i increase resolution??
> So far i only managed to change the x and y size of my picture.
>
> I use the following code:
>
> nfr=frames
> xsize=1000
> ysize=1000
> mpegID=MPEG_OPEN([xsize,ysize])
> ......
> (here i do the plotting)
> ......
> mpeg_put,mpegID,WINDOW=0,FRAME=it-1,order=1
> endfor
> MPEG_SAVE,mpegID,FILENAME='movie.mpg'
> MPEG_CLOSE,mpegID
>
> Thanx in advance!!
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| Re: creating MPEG in IDL [message #51823 is a reply to message #51748] |
Thu, 07 December 2006 10:07 |
Karl Schultz
Messages: 341
Registered: October 1999
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Senior Member |
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On Wed, 06 Dec 2006 16:12:42 -0800, Brian Larsen wrote:
> how is IDLgrMPEG different than mpeg_put? They are not the same
> fundamental back end that does the writing?
The mpeg_* functions are just "procedural" wrappers around the IDLgrMPEG
object. Unfortunately, mpeg_open doesn't let you change the IDLgrMPEG
FORMAT property, which is why I suggested using the object interface.
Karl
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