Syncing Movies of Your Experiment to Your Data
You can insert video recordings of your experiment into experiment files. You can then synchronize the video to your data so when the experiment is replayed, the data and video can be viewed together.
You can capture movies directly from a video input such as a digital video camera or web camera.
In addition to following the procedure below, tutorials are available to help you sync a movie to your data. Choose Open from the File menu and look in Experiments > Tutorials to find them.
Synchronizing a Movie with Your Data
Use this procedure to sync your data to your video of the experiment. Note: If you are using imported data that was collected with a calculator, not a computer, you must change the name of one of the data columns. See below for more information.
- Choose Movie from the Insert menu, and select the movie you want added to your page. Supported movie formats are Video clip (.avi), QuickTime movies (.mov), or any movie that can be supported by QuickTime.
- 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:
- Move the mouse cursor over the graph and look at the mouse coordinates in the lower left corner of the screen (as long as Mouse Position and Delta is checked in the Graph Options dialog).
- Use the examine feature
and scroll the mouse across the graph. This method will give you a more precise time from the data.
- Click the Sync button
to open the Movie Synchronization dialog.
- Enter the time or click on the graph at the point that you identified earlier as the Graph Time. Make sure you choose the correct Data Set.
- Use the slider and the next frame/previous frame buttons to find the frame in the movie that corresponds with the data point you identified in the graph. Click OK.
- Choose Replay from the Analyze menu to view the synchronized movie and data.
Tips
- It is helpful to have the data-collection rate an integer multiple of the video frame rate so that there are sensor values corresponding to each frame.
- Double-click the movie or choose Movie Options from the Options menu to change the properties of the movie including the playback rate.
- 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. If the original movie file is deleted, it will be removed from the Logger Pro file.
Additional Information for Data Imported from a Calculator
Perform this process only if you imported data from a TI calculator. Data imported from a calculator have the time data in a column that is labeled "L1," which must be renamed to "Time" before attempting to synchronize the data to a movie.
- Choose Column Options > L1 from the Data menu to open the Column Options dialog.
- Change the Column Name to Time. Then, enter an appropriate Short Name and Unit (min, for example).
- Click Done. You can now perform the procedure above to sync your data with your movie.
See Also: