Setting caption export parameters

By default when the Add captions checkbox is set checked only captions stored in the captions database overlay the exported video with default display parameters. These parameters can be changed and captions specifying camera time and/or name can be added. For this click the Configure… button next to the Add captions checkbox.

The Edit captions box will appear:

The following parameters can be set in this box:

1. Caption line export parameters:
   1. The Copy captions to separate files checkbox enables saving exported captions as an individual file with .srt extension (1). The file with captions has .srt extension and is saved to the specified folder. Captions are exported as an individual line.

   2. The Combine captions into one track checkbox enables saving captions of all kinds into one track (or one .srt file) (2). If the checkbox is set unchecked, then the time and camera name captions are exported separately from the captions from the captions database.

      Note

      Set both Copy captions to separate files and Combine captions into one track checkboxes in order to view all captions in Windows Media Player (WMP). This is due to WMP feature: it does not allow selecting or switching the caption tracks (only enabling or disabling them).

2. Text scroll parameters:
   1. The Enable automatic text scrolling checkbox is used to limit the number of lines in captions overlaying exported video (3).
   2. The maximum number of caption lines that can overlay the video is set in the Maximum lines to show field (4). If there are more lines in captions that are to be displayed on the video, then the lines will be displayed partially with 1 second interval.
3. The captions may be added as a track or built in over the video.
   1. Parameters for time and name caption track:
      1. The Add line of captions with timestamp checkbox enables overlaying camera time and date captions track on the exported video (5). 

      2. The Add camera name checkbox enables overlaying camera name captions track on the exported video (6).

         Note

         Captions of time and camera name are exported as individual lines.
      3. The Font button opens the standard Windows box to specify font parameters for captions (7).
      4. The Color button opens the standard Windows box to select the color of captions (8).
      5. The Horizontal alignment and Vertical alignment dropdown lists allow positioning of time, name and other captions on the video (9).
   2. Parameters for built in caption:
      1. The Show camera name checkbox enables built-in captions with the camera name (10). These captions are always located in the bottom left corner on the video.

      2. The Show frame timestamp checkbox enables built-in captions with the frame timestamp (11). These captions are always located in the bottom right corner on the video.

         Note

         Use FontCamNameHeight, FontCamTimeHeight, ExportFontAdaptive registry keys to adjust the built in captions size (see Registry keys reference guide).

If it is necessary to set the default settings, click the Default... button (12).

If it is necessary to apply the settings specified in the Captioner object for captions (see Configuring captions display on a video image), click the Streams settings button (13). The window for setting up caption streams will open:

In this window, you can set the following parameters:

1. Set the check boxes in the Export column for those caption streams that should be displayed in the exported video file (1).
2. Set the settings for the displayed stream:
   1. Left-click the required stream to select it (2).
   2. To configure the font, click the button next to the Font field (3). The button opens a standard Windows OS window for setting the parameters of the caption font.
   3. To adjust the color, click the  button next to the Color field (4). The button opens a standard Windows OS window for selecting the caption color.
   4. In the Horizontal and Vertical drop-down lists, select the caption alignment method (5).
   5. Set the coordinates of the upper left corner of the caption display area: X (horizontal offset from the left screen border) and Y (vertical offset from the upper screen border) (6).
   6. Set the dimensions of the caption display area: Width (caption display area width) and Height (caption display area height) (7).
   7. Click the Apply button to save the specified settings (8).
3. Configure settings for other streams by repeating the steps from paragraph 2.
4. Click the Save button (9).