when ''save myavi'' the size of it in matlab folder much more than the size of original video?
1 view (last 30 days)
Show older comments
Hello everyone,
I have a avi 320x240, 20 sec., 7.5 mb. but when i save ''save myavi''(after myavi=aviread('mov'); ), the form of it in matlab folder (as MAT-file), it shows 88,mb. what information gets involved?
much appreciated.
1 Comment
Matt Kindig
on 7 Aug 2012
The compression algorithm for an AVI and a MAT file is quite different. In particular, identical pixels which occur in many frames (background regions, for example) will usually compress in the AVI format. As Matlab doesn't know that the particular 4-D matrix is an AVI file, no such compression takes place, resulting in a larger file.
Answers (0)
See Also
Categories
Find more on File Operations in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!