Non-realtime video analysis, exporting motiongrams and various quantitative features of movement in the video file.
Imports a folder of video files for batch processing
Realtime previewing of video, motion image, motiongrams and analysis data
Outputs horizontal and vertical motiongrams
The output files are saved in the location of, and names based on, the original video file.
Outputs a text file with the following data:
The first column contains a time stamp.
Columns 2 through 10 contains filtered data
Columns 11 through 19 contains unfiltered data
Xposition, Yposition, Xvelocity, Yvelocity, absolute velocity, direction, absolute acceleration, change in direction, Quantity of Motion
Please see the wiki page about how to use the exported data.
A quick video demonstrating how the program works:
Download high-resolution QuickTime version of this movie.
Q: What are the numbers being exported?
A: Check this wiki page
Q: What type of video file should I use?
A: VideoAnalysis uses the QuickTime engine, so any video file that can open and play in QuickTime should also open and play in VideoAnalysis.
Q: How do I import the data into OpenOffice
A: This video shows how to import (in Norwegian).
Q: What type of video compression should I use?
A: This depends on many factors. The best is to use uncompressed video, but this is usually not practically possible. Second best is to use a file format that compresses the video on a per frame basis, e.g. Motion JPEG (MJPEG). Other compression types, e.g. MPEG-1/2/4 use keyframes for compression. That said, we often use MPEG-4 (H.264) compression, since this gives a high visual quality and small file size.
Claudia Mauléon and Esteban Etcheverry have written a short overview of their experiences with working with VideoAnalysis on Windows.
- Built with Max/MSP/Jitter by Cycling '74.