CaptionSync produces a wide variety of output file formats, including "side-car" caption files and encoded outputs. The Smart Player feature is also a great tool to caption your media files in a seamless way, especially files you don't own.
The typical format generated for a Captioning request is a "side-car" caption file that is picked up at play time by players that support closed captioning. The different players and platforms have different requirements when it comes to displaying captions. But for most users, associating a side-car caption file on a desktop player is not suitable for their needs: to deliver a large amount of files at the same time, and to stream the video with captions to a variety of devices, an online video platform is the best option. Our Smart Player feature is also a good tool to caption online media in a seamless way, particularly video/audio you don't own.
Video Encoding can also be useful for players that only support the display of encoded subtitles, or that don't support closed captioning (only open captioning).
For most users, associating a side-car caption file on a desktop player is not suitable for their needs as large amounts of files need to be made available at the same time, and the captioned media need to be streamed to a variety of devices. So online video platforms are the best option for such cases as they are cross-platform, and usually independent from the browser, operating system, or desktop player. Also, no caption encoding is required since the caption files are kept locally. We have articles on several popular platforms, where you can learn how to associate your caption file with the media: YouTube, Vimeo, integrations with multiple online platforms/lecture capture systems, other Video Platforms, and other Lecture Capture systems.
This tool displays captions for online media in a hassle-free manner, including videos that you do not own. Captions are associated locally with the media files and you just need to share the URL to the player with your audience. It also provides a number of enhancements over regular players, like an interactive transcript, among others. More information is available in our Smart Player tutorial.
"Side-car" Caption files:
The typical format generated for a Captioning request is a "side-car" caption file: a file containing timing information and a verbatim transcription of the audio content. This file is picked up at play time by players that support closed captioning. The different players and platforms have different requirements when it comes to displaying captions.
- Our Which Caption Files Do I Need article provides more information about which formats some of the most popular players require.
- How to associate a caption file with your media in some of the most common desktop players is described in the following articles: Windows Media Player, QuickTime, VLC, and RealPlayer.
- To just quickly check your results, you can use one of the methods/players laid out in the checking Results and Synchronization article.
As an alternative to the side-car caption files, some media types allow you to encode the caption data right back into the movie. CaptionSync allows you to do this for mp4, mov, m4v, or f4v media files. First, we generate the normal caption files (the side-car files), then we encode the caption data back into your movie. We generate subtitled (captioned), or open captioned videos. More information is available in our Video Encoding feature tutorial.
- If you have a complete job but didn't request the caption files you need, you can use our Redo feature for free (for 1 year after the original request) and generate a new set of outputs.