Knowledge Base

Correct Event Log Errors Manually

IMPORTANT: Always make a backup of your project before editing data. See Create a Backup of a Project.

What do you want to do?

• Replace an element in the Event Log
• Delete an element in the Event Log
• Add an element to a scored event
• Add a new event row in the Event Log
• Remove event rows from the Event Log
• Change the time of a scored event

Replace an Element in the Event Log

Click its cell in the Event Log and then score the correct element.

Delete an Element in the Event Log

Click its cell in the Event Log and press Delete.

Add an Element to a Scored Event

Example: Add one more Modifier Value to the Behavior 'Initiate Play'.

1. Click the cell where you want to add the element. The Codes window displays the elements that you can add in that cell.
2. Either type in the keycode for the new element or click the code in the Codes window.

Result: The new modifier is added in a new cell that was inserted under the cell you wanted to edit.

Add a New Event Row in the Event Log

Example: To add an event between the event scored at 1.72 and the event scored at 4.36.

1. Click the row immediately above where you want the new row (in the example above, the header of the row with 1.72).
2. Click the Insert Event button on the toolbar. Alternatively, right-click in the event row and select Insert Event Above or Insert Event Below.

Result: A new empty event is added below the selected row. The time stamp is the same as that of the selected row.

3. Score the data as usual. If necessary, change the time stamp (see below).

If you score events from a video file, it is also possible to insert a line in the following way:

1. Position the video to the moment where the event occurs.
2. Score the event as usual. The new event line is inserted between two existing lines.

Remove Event Rows from the Event Log

1. Click the left-most cell of the row or rows you want to delete. Result: The entire row is highlighted in black.
2. Click the Delete Event button on the toolbar.

Change the Time of a Scored Event

Example: You have scored an event slightly later (or earlier) than the real time. Instead of deleting the event and re-scoring it at the right time, change the time of the existing record.

1. Locate the event line you want to change and double-click the cell in the Event Time column. Result: The time cell is highlighted in blue.
2. Click the number you want to change and type the new time, or use the two arrow buttons to adjust its value.
3. Press Enter.

Tip: Alternatively, use the option Update Time. Click the left cell of the event line to select the line, move the video or audio to the correct time, and press Ctrl+T to update the time in the Event Log to the correct timestamp. Alternatively, right-click the row and select Update Time.

The new timestamp cannot be earlier or later than the timestamp of the previous or next event from the same Behavior group.

Synchronize Data Sets

Aim

To change the Start time of a data set (Event Log, Video, Audio, External Data) relative to others.

Example 1: You started video recording with one camera 30 seconds earlier than with the other camera. Before you start observing, you want to synchronize the video files.

Example 2: After the observation, you imported associated physiological data. You want to synchronize the physiological data with the events.

Prerequisite

An event can be recognized in all streams to synchronize. For example, you type a key that is assigned to a behavior in the Coding Scheme and record that on video. The key press will appear in the Event Log and will be visible in the video as well. When you record external data and you cannot use automatic synchronization (see External Data), the event can be recognized in the external data as well. For example, you counted down aloud until you pressed the start button on the external data system and you recorded this on video.

Procedure

1. Open an existing observation, and make sure that the video, audio and external data linked to the observation are visible on your screen. If a data set is not shown on your screen, click View Settings on the far-right side of the toolbar and select that option.
2. You can synchronize data sets in two ways: numerically, by typing in the offset value, or manually, by moving the slider of the video file or dragging the visual presentation of the data set. See Numerical Offset and Manual Offset below.

Numerical Offset

1. Click the Offset button on the Component toolbar, then choose Numerical Offset. Result: The File Synchronization window appears. This window lists the event log currently open, the video and audio files, and the external data linked to it.
2. Locate the data set (event, video, audio or external data) of which you want to change the start time relative to others, and click the Offset cell.
3. Enter the offset value. Example: If your event log starts 20 seconds after the video file, locate the row of the video file and enter -20 in the seconds group of the Offset column.
4. Click Apply.

Manual Offset

1. Click the Offset button on the Component toolbar, then choose Manual Offset. Result: The Synchronize window appears explaining the next three steps. Click Start Synchronization.
2. Click the window with the data you want to synchronize. Result: A red border appears around the window. You can now alter the time in this window while the time in the other windows remains fixed.
3. For video or audio, use the Playback Control buttons to play the media file to the new position. For external data, click the window and move the data stream with the cursor to the new position. The aim is to position the video, audio, or external data to the matching event in the Event Log.
4. Click the Offset button again. Result: The red border disappears. The files are now synchronized as you have specified.

Notes:

• If you use MediaRecorder 4 or higher to record video, the video files are automatically synchronized with your observation.
• You can use the File Synchronization window (see Numerical Offset) to check that the time difference between video, audio, event log and other data streams is correct. You can change this difference at any time.