In the Video Captions Options dialog, you can set options for capturing videos.
Choose Video Capture Synchronized with Sensor Data Collection if you want the video capture to be the same duration as the data-collection experiment. To change the experiment duration, use the Data Collection dialog.
Choose Video Capture Only if you want the video capture to be independent of the data-collection experiment. After choosing this option, enter the duration of the video capture and the unit of time, e.g. second, minute, hour.
If you want to collect a time-lapse movie, choose the Time-Lapse Capture option. Extended video capture will create very large files unless this feature is used.
Enter the time between frames and the unit of time, e.g. second, minute, hour.
Click Camera Settings to access up the camera manufacturer's dialog box, which should allow you to adjust the camera settings. Options might include being able to set the shutter speed, control the contrast, control white balance, etc. The options available will be determined by the camera manufacturer and the particular camera driver in use, not Logger Pro.
Click Advanced Options to access additional settings.
Each video capture is saved as a separate file when the associated Logger Pro file is saved. The video file names will begin with the name entered in this field, and a number is appended to successive video capture files. Most users will not need to adjust this entry.
Adjust Video/Data Synchronization allows you to correct for typical differences in video and data startup times. The difference is usually less than half a second, so if this discrepancy will not affect your experiment and analysis, you do not need to use this option.
To adjust the video/data sync, you will need to first determine the time offset between the video and the data streams. Do this by collecting a run in which there is some event that can be identified unambiguously in both the video and data streams. For example, you might take a video of your finger tapping a force sensor, or your thumb covering the end of a light sensor. Use the methods found here to determine the time offset. If the Movie time from the Movie Synchronization dialog is always greater than the Data Set time, then the video is said to be "behind" the data. Enable Adjust Video/Data Synchronization, select Behind, and then enter the appropriate time difference in seconds. It is typical to be behind by about 0.500 seconds, but this will depend on your computer, your camera, and how busy the computer is when a capture is started.