Re: ridiculous avi export
- To: mathgroup at smc.vnet.net
- Subject: [mg66793] Re: ridiculous avi export
- From: Peter Pein <petsie at dordos.net>
- Date: Tue, 30 May 2006 05:49:07 -0400 (EDT)
- References: <acbec1a40605251445k8ffad34w33384f4caade86fe@mail.gmail.com> <e5av1r$nsc$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Chris Chiasson schrieb: > Why is it that the avi version is about 75 times the size of the the > 3.5 MB animated gif file below? Is Mathematica just dumping the pixel > data without compression? Both were created by using the Export > function on a set of Graphics objects (not containing any raster > data). > > http://chris.chiasson.name/temp/test.gif > > http://chris.chiasson.name/temp/test.avi > > Also, both exports take "forever"... what's going on? > > Mathematica 5.2 on Winodws XP, > -- > http://chris.chiasson.name/ > > Hi Chris, unfortunately, Mathematica doesn't allow to select a codec for compression (or missed something). If you are using Windows, VirtualDub [1] helps to commpress this raw AVI-file. For other systems, mmencode [2] is a good choice (IMHO). I imported your test.gif into Mathematica and exported the 268MB-Monster-AVI. Using the H264-codec, I got a 402.516-Byte avi [3] with reasonable quality. hth, Peter [1]: http://virtualdub.sourceforge.net/ [2]: http://mplayerhq.hu/design7/news.html [3]: http://people.freenet.de/Peter_Berlin/Mathe/test-h264.avi
