dominKnow | ONE videos support closed captions. The recommend format is VTT (best cross browser and device support).
- YouTube: Creating transcripts with YouTube!
- IBM Watson: Create your transcripts
- Use Amara to reate subtitles and synch your audio
- Rev.com: Fast high quality on demand trascriptions, closed captions, for foreign languae subtitles
- PlayMedia: Tool to convert from one format to another - e.g., SRT to VTT
- Jubler: Free tool to author and create subtitles