- Create a text file with your captions. The format is three lines per caption (quick example below):
- timecode: start, stop
- text to display
- blank line
- Go to my videos. Select the video to caption. Click “Edit captions and subtitles” under the video information.
- Select your caption file to upload. Select the language. If you enter a name, it will be appended to the language. For example, if you use the name “Testing,” YouTube will offer users the caption track “English: Testing.” You can’t edit the name, as far as I can tell, once a caption file is uploaded.
- Click “Upload” to upload the file. YouTube will process it. I goofed the format the first time, and it complained right away.
To view captions, look for a “CC” box in the lower right. Click the box, and select the caption track to play.
Here’s the sample caption file:
I do not like green eggs and ham
I do not like them, Sam I am
Not in a car! Not in a tree!
Not in a house! Sam, let me be!
I tried a sample with all the zeroes dropped out (e.g. 00:00:00,00:00:02) and it works fine.
Now to find out more about software to make these kinds of files.