Re: Video compression
- To: mathgroup at smc.vnet.net
- Subject: [mg108357] Re: Video compression
- From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
- Date: Mon, 15 Mar 2010 00:05:23 -0500 (EST)
- References: <hnicss$t0d$1@smc.vnet.net>
The vast majority of movie formats uses compression. So, if Mathematica can import a given video format is most likely that it is compressed. The help for the Import/AVI format says: "Import supports the following codecs: "YUV", "H261", "H263", "JPEG", "Uncompressed", "Cinepak", "MotionJPEG". " Looks like there are compressed video formats in there. Cheers -- Sjoerd On Mar 14, 12:13 pm, Robert Pigeon <robert.pig... at videotron.ca> wrote: > Hello all, > > As you all know we can Import a video in Mathematica 7 and > then explore frames for example. But, usually a video that is obtain from > the Net is in a compress form of some sort. Then frames cannot be extracted > to do some image processing. We cannot even play it in Mathematica. > > My question: is it possible to uncompressa video in > Mathematica or do I have to open the video outside Mathematica in a video > player and, if possible, save it in an uncompress form? > > Thanks for any help, > > Robert