Making Movies of Your Experiment

Logger Pro can insert videos of your experiment into files. You can then synchronize the video to your data, so when the experiment is replayed, the data and video will be viewed together. Note: It is helpful to have the sensor data collection rate an integer multiple of the video frame rate so that there are sensor values corresponding to each frame. Also, it is important to know that Logger Pro simply links to your movie file. The movie is not merged into your Logger Pro file. The movie is a separate file. To keep the movie linked to the Logger Pro file, do not delete the original movie file.

You can capture movies directly from a video input such as a digital video camera or web camera.

Sample files with movies are also available. Select Open from the File menu, then look in the Experiments folder to access them.

To synchronize the movie with the data, you need to find a spot in the data that is easy to identify in the movie, e.g. the time when a ball reaches the peak of a toss. There are two ways this can be done:

1. Move the mouse cursor over the graph and look at the mouse coordinates in the lower left corner of the screen.

2. Use the examine tool  and scroll the mouse across the graph. This method will give you a more precise time from the data.

Once you have identified this time, complete the following steps:

3. Double-click on the movie or choose Movie Options from the Options Menu to change the properties of the movie including the playback rate.

4. Choose the Replay from the Analyze menu to view the synchronized movie and data.
 

A tutorial covering movies is available. Select Open from the File menu, then look in the Experiments folder to access it.
 
 

See Also:

Video Capture

Video Analysis