World Caption is a free Macintosh software program created at the
University of Wisconsin-Madison that makes it easy to add captions to any
QuickTime compatible video. Before starting, you must produce a
transcript of the audio portion of the video and save it as a .txt file. You can
do this yourself or employ a professional transcription service.
Importing video and text into World Caption is as simple as dragging a file
from one folder to another. Just select the QuickTime compatible video file
and drag it onto the black video pane at the upper part of the World
Caption Document Window. Select the .txt file containing the transcript and
drag it onto the caption pane in World Caption. World caption
automatically breaks the transcript file into separate captions. You tell the
program how many words per caption to place via a preferences setting.
World Caption starts by evenly distributing the captions over the length of
the video. You complete the synchronization process by adjusting the
timing of the captions to match the spoken dialog.
Press play to begin the video. When the spoken dialogue matches the text
of the first caption, check the box next to that caption. Advance the video
until near the end and click play. When the spoken dialogue reaches the
text of the last caption, check the box next to that caption. Now adjust a
caption near the middle of the video in the same way. Continue to adjust
the caption timing as needed by selecting the checkbox next to each
caption when the spoken dialogue reaches it. Every time you adjust the
timing of a caption the “unadjusted” captions on either side of it are
automatically adjusted as well. Even in a long video, you can save a lot
time in the synchronization process by making a making a small number of
adjustments relative to the total number of captions in the video. It’s rarely
necessary to individually adjust each caption.
Once your captions are synchronized, you can adjust the font, font size,
font color, background color and choose the position in which your
captions will appear. Another great thing about World Caption is that it
allows you to encode multiple caption tracks into a video so you can
provide caption tracks in more than one language. You can also create a
caption track as a graphic rather than a text track to avoid problems
caused by the viewer’s computer lacking your chosen font.
Once you complete the process of creating and synching your captions,
you are ready to export your final captioned video. Select the "Export"
command from the "File" menu. Choose a destination for finished file and
enter the desired file name in the "Save As:" dialog. Click "Save” and sit
back while World Caption creates the captioned version of your movie.
For more information and to download World Caption, visit
World Caption development and support by Brian Deith, Learning Support
Services, College of Letters and Science, University of Wisconsin -
Video courtesy of Professor Randall B. Dunham,
U.W. School of Business