Caption You can check or uncheck the "Enable caption" box to enable or disable text caption on video. To display text caption on your video, simply enter the words in the Text string field or click on Time Code button to put up a timestamp. If you wish to display time and text at the same time, click Time Code and then type in the text after the code. Click on Bounding Box. Press the mouse down and draw the area on Text Box to set the position of your caption. You can set the font of your caption by clicking on Font.