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Using CaptionTube to create captions for your YouTube video

Step 1: Go to the CaptionTube home page at and sign in with your account.

Step 2: Make the video you want to caption public so that you can access it in the application. Copy the YouTube URL for your video and paste it into the CaptionTube textbox. You should see your video displayed with the options to Edit or Delete. Click Edit to see the video and select the in and out points for your first caption.

edit captions

Step 3: To set the in point, click "+Add Caption."

set inpoint

You will see a text box where you can type your caption:

caption text box

Step 4: Then play the video until you reach the point where you want the caption to end. Click the out-point icon that appears just to the right of the "Caption Duration" time code.

outpoint button

Step 5: Type in the caption text for that segment and click "Save Caption."

enter caption text and save

Step 6: You'll now see a timeline display below your video showing the first caption. Play the video until you reach the next caption inpoint. Click "Add Caption" again to create the next in point, play the video until you reach the out point, click the icon to the right of the "Caption Duration" time code again, and then enter the text and save. You can play the video as long as you like. If the text is longer than you thought, you may want to set an earlier outpoint and break that segment into two.

Step 7: Repeat this process until your captions are complete. When you're done, click the "Publish" button.

publish button

Step 8: Select the file format to download. Either format is supposed to work but you may find that only one format downloads to your system.


Step 9: Open your video in the YouTube Video Manager and select "Captions."

captions link

Step 10: Click the "Upload captions file or transcript" button.

upload captions file button

Step 11: after selecting the downloaded .sub or .srt file, click the Upload button.


Step 12: Your captions will be displayed in editable text boxes. Make any final changes and then click "Done."

done button

You can now view your final captions in YouTube. If your video is restricted to a course or specific users, you can now reset your privacy settings.

final captions

Instructors- A PDF of this tutorial is available for download for use in your course.