Adobe Flash provides support for adding closed captions to Flash (flv) video. The FLVPlaybackCaptioning control make it easy to attach TimedText (dfxp) format captions, and many of the built-in player skins include buttons to enable users to show and hide closed captions.
The following files are involved in creating a captioned Flash video using the FLVPlaybackCaptioning control:
The free captioning tool, subtitle-horse.org, can be used to create TimedText (dfxp) format caption files. To try subtitle-horse, do the following:
- Browse to subtitle-horse.org
- Enter the URL of our sample Flash video (http://www.dhs.state.il.us/accessibility/tests/flash/video.flv).
- When the video loads, copy and paste the first caption from our sample Transcript (http://www.dhs.state.il.us/accessibility/tests/flash/video.txt)
- Play the video
- When the audio track reaches the end of your first caption, click the video to pause it
- Copy and paste the second caption from the sample Transcript
- Repeat steps 4 - 6 until you reach the end of the video
- From the Titles menu, select Write TT File (unfortunately this is a mouse-only operation)
- Enter the name of your caption file in the form of "video.dfxp"
- Follow the instructions to download and save your file locally.