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- Problem-solving:
- Mastering-physics:
- Scaleup and pedagogy:
- Logger Pro:
- Installation:
LoggerPro for MAC OSX and Windows, please find instructions and password on Blackboard: Files section, LoggerPro Wiki.
You will need to download Quicktime in order to load, view, and analyze movies.
Within loggerpro, use pull-down menus >>insert >> movie .... If the movies do not run smoothly, right click, select properties, deinterlace movie.
More on LoggerPro ... e.g., displaying multiple graphs.
Capturing and modifying video<:
Download and install two pieces of software,
Virtualdub and
Avisynth.
Avisynth is a script driven program that feeds filtered
AVI files to a viewer, like virtualdub or windowsmedia player.
We use virtual dub because it can capture video, and can
also save the modified, filtered avi file that is put together by
Avisynth. Below are a few example commands. Put together,
the script appends to the avi containing the microscope
calibration, a video clip of moving chloroplasts. The combined
file is then decimated, keeping only every 16th frame, starting
at frame 0:
dd=AVISource("c:\highlow\calibration40x.avi") #read the calibration
dd=dd+AVISource("c:\highlow\chloroplast.avi") # add film strip from cells in microscope
SelectEvery(dd,16,0) # show only every 16th frame
Note: If you want to edit files produced by loggerpro, you must import them by the DirectShow filter rather than the AVISource filter used above.
To create the script, open the text editor and type the lines above.
Then save as anyname.avs. To execute, from the file manager, right
click on the text file (anything.avs), and select open in virtualdub.
The resulting video clip may then be saved or simply viewed.
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