| Re: mpeg quality [message #39077] |
Sat, 24 April 2004 16:18  |
DPJ
Messages: 3
Registered: October 2003
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Junior Member |
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Thanks Haje...it looks like this will work.
David
"Haje Korth" <haje.korth@jhuapl.edu> wrote in message
news:c68b7q$aus$1@aplcore.jhuapl.edu...
> Miguel,
> idl2avi can be found at
http://www.kilvarock.com/freesoftware/dlms/avi.htm.
> As Mark points out v5.6 works for IDL 6.0, even though I compiled my own
> version. idl2avi will pop up a window and you can select any Video for
> Windows compatible codec. There are other ones, but vp3 gave me the best
> quality/file size ratio. Unlike MPEG it is good for scientific
presentation.
>
> Haje
>
>
>
>
> "Miguel Angel Cordoba" <cordoba_nospam@grahi.upc.es> wrote in message
> news:40878D50.4070901@grahi.upc.es...
>> Hi Haje,
>> can you explain where can we find the idl2avi.dlm module and how we can
>> use the vp3 code?
>>
>> Thanx
>> --
>> Miguel �ngel
>>
>> Haje Korth wrote:
>>
>>> David,
>>> I quit using the mpeg routines because of the crummy quality. I am
pretty
>>> happy with the idl2avi.dlm from Ronn Kling and the vp3 codec, which can
> be
>>> downloaded free of charge at http://www.vp3.com. I have been using this
>>> solution for a several months and it works great.
>>>
>>> Haje
>>>
>>>
>>>
>>
>> --
>> _________________________________________________________
>> Miguel Angel Cordoba mailto:cordoba@grahi.upc.es
>> Tel. +34 934 017 371
>> Fax. +34 934 054 194
>> ---------------------------------------------------------
>> Grup de Recerca Aplicada en Hidrometeorologia (GRAHI-UPC)
>> http://www.grahi.upc.es
>> ---------------------------------------------------------
>> Centre membre de la Xarxa d'Innovacio Tecnologica XIT
>> http://www.cidem.com/xarxait
>> _________________________________________________________
>>
>>
>
>
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| Re: mpeg quality [message #39098 is a reply to message #39077] |
Thu, 22 April 2004 14:49  |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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Yunxiang Zhang wrote:
> On Wed, 21 Apr 2004, Haje Korth wrote:
>> I quit using the mpeg routines because of the crummy quality. I am pretty
>> happy with the idl2avi.dlm from Ronn Kling and the vp3 codec, which can be
>> downloaded free of charge at http://www.vp3.com. I have been using this
>> solution for a several months and it works great.
> What's the best choice for Unix/Linux guys?
For many purposes, the FLIC format, which was designed some time ago by
Autodesk as a format for CAD animations. The big limitation with FLIC is
that it supports only 8-bit colour. If you can live with that, I think
it's your best bet.
You can generate FLIC files with a command-line program, ppm2fli, and
view them on Unix with Xanim.
I have an HTML page that talks about different animation formats & shows
examples. It's normal home is hidden behind the NIWA firewall, but for a
limited time only you can see it at
ftp://ftp.niwa.co.nz/incoming/m.hadfield/animation/index.htm l
The discussion is a bit disorganised and does not take full account of
all the valuable info that Rick Towler has posted to the IDL newsgroup
over the years (though I do mention this). Also, the page suffers a bit
from being uprooted & transplanted in a new location, but it may give
you some useful info. Please be sparing when viewing the animation files
for the second example: they're big!
--
Mark Hadfield "Ka puwaha te tai nei, Hoea tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)
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| Re: mpeg quality [message #39214 is a reply to message #39077] |
Mon, 26 April 2004 10:47 |
Rick Towler
Messages: 821
Registered: August 1998
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Senior Member |
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This may be obvious but remember that in order to play back an animation
created with vp3 the user needs the vp3 codec installed. If your animations
are intended for a limited audience which you have some control over you're
usually fine. But if you are making these available to a wide audience then
you're in for a bit of a headache.
Not that there is much you can do to limit the pain though. The only codecs
that are shipped with most every OS are the Radius Cinepack codec and some
version of the MPEG-1 codec. Both are poor codecs for scientific animation
so there is no universal solution.
If you are going to be presenting your animations find out well ahead of
time if you can use your own laptop. Most seminars/conferences I attend
these days seem to strongly encourage all speakers to use a single laptop to
cut down on laptop/projector "issues". I don't know if this is a trend...
(Physicists insert joke about how biologists can't use computers here.)
Using custom codecs in this scenario takes extra effort.
-Rick
"DPJ" <dpjackson@yahoo.com> wrote in message
news:mBCic.331$g31.234@newsread2.news.atl.earthlink.net...
> Thanks Haje...it looks like this will work.
>
> David
>
> "Haje Korth" <haje.korth@jhuapl.edu> wrote in message
> news:c68b7q$aus$1@aplcore.jhuapl.edu...
>> Miguel,
>> idl2avi can be found at
> http://www.kilvarock.com/freesoftware/dlms/avi.htm.
>> As Mark points out v5.6 works for IDL 6.0, even though I compiled my own
>> version. idl2avi will pop up a window and you can select any Video for
>> Windows compatible codec. There are other ones, but vp3 gave me the best
>> quality/file size ratio. Unlike MPEG it is good for scientific
> presentation.
>>
>> Haje
>>
>>
>>
>>
>> "Miguel Angel Cordoba" <cordoba_nospam@grahi.upc.es> wrote in message
>> news:40878D50.4070901@grahi.upc.es...
>>> Hi Haje,
>>> can you explain where can we find the idl2avi.dlm module and how we
can
>>> use the vp3 code?
>>>
>>> Thanx
>>> --
>>> Miguel �ngel
>>>
>>> Haje Korth wrote:
>>>
>>>> David,
>>>> I quit using the mpeg routines because of the crummy quality. I am
> pretty
>>>> happy with the idl2avi.dlm from Ronn Kling and the vp3 codec, which
can
>> be
>>>> downloaded free of charge at http://www.vp3.com. I have been using
this
>>>> solution for a several months and it works great.
>>>>
>>>> Haje
>>>>
>>>>
>>>>
>>>
>>> --
>>> _________________________________________________________
>>> Miguel Angel Cordoba mailto:cordoba@grahi.upc.es
>>> Tel. +34 934 017 371
>>> Fax. +34 934 054 194
>>> ---------------------------------------------------------
>>> Grup de Recerca Aplicada en Hidrometeorologia (GRAHI-UPC)
>>> http://www.grahi.upc.es
>>> ---------------------------------------------------------
>>> Centre membre de la Xarxa d'Innovacio Tecnologica XIT
>>> http://www.cidem.com/xarxait
>>> _________________________________________________________
>>>
>>>
>>
>>
>
>
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