Sync Movie to Graph
Logger Pro
can import videos of your experiment. You can then
synchronize
the video to your data, so when the experiment is replayed, the data
and
video will be viewed together. To perform a synchronization, you must
be able to identify a time on the graph that corresponds to a
particular frame in the video.
A tutorial covering movies is available. Choose Open from the
File
menu, then look in the Experiments folder to access it.
When you are ready to match your data to activity of your
movie,
click
from the bottom of the movie object.

You can select which Data Set you want
synchronized to the
video.
If the Synchronize Video Analysis Data Set with Selected Data
Set
check box is checked, the times generated by
the video analysis tool will be from the selected Data Set instead
of the raw times
in the movie.
The Graph Time is the time you have
selected from your
graph
(or manually entered in the field) that best corresponds to the chosen
frame (or manually entered Movie
Time)
of your movie.
For example, you might have a movie that starts 0.75833s (as
shown
above) before your
sensor data. Sync the movie to the sensor data using some event in the
video. Now when you do video analysis for the movie, the time entered
for a point on the first frame will be -0.75833s if the box
above is checked, since that corresponds to the graph time. If the box
is
not checked, a time of zero will be entered for the first frame.
Check the box next to Use
This
Synchronization In Video Capture to apply the
synchronized
offset
to subsequent captured videos.
Synchronizing
Your Movie with Existing Data
Data collected with a computer can easily be synchronized with
a
movie. A tutorial covering synchronization is available. Choose Open
from the File
menu, then select 11-1 Working with Movies.cmbl to access
it.
- From the Insert
menu, choose Movie
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.
- Click the Sync button
to open the Movie Synchronization
dialog . To synchronize the movie with the data, you need to first
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. Click the graph at the time you are using to sync.
Next, 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.
- Choose the Data Set that holds the data being synchronized
to the
video.
- Click OK.
Choose the Replay
from the Analyze
menu to view the synchronized movie and data.
Synchronizing Your Movie with
Imported Data
If you collected data away from the computer using
LabQuest, LabPro,
WDSS, Go! Motion
remotely, or
a calculator or Palm handheld with a data-collection interface, you
need to import your data to Logger Pro.
After importing the data, you can
synchronize that data with a movie you have made of the experiment.
- Import
the data.
- Perform this step only if you imported data
from a TI calculator. If you did not, skip to the next step.
Data
imported from a calculator have the time
data in a
column
that gets labeled "L1" which then 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 (s, for example).
- Click Done.
- From the Insert
menu, choose Movie
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.
- Click the Sync button
.
The Movie Synchronization
dialog
will
be opened. To synchronize the movie with the data, you need to first
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. Click the graph at the time you are using
to
sync. Next, 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.
- Choose the Data Set that holds the data being synchronized
to the
video.
- Click OK.
Choose the Replay
from the Analyze
menu
to
view the synchronized movie and data.
See Also:
How To/Making
Movies of your Experiment