References ▼
A Closed Captioning Stream is a data stream hidden inside a video stream. It represents the audio portion as text.
An MPEG2 elementary video stream sometimes has closed captioning data embedded in it as EIA-608. In such cases the MPEG2 Decoder generates two output streams: Video and Closed Captioning.
Also, the AVI and OGG container formats can have closed captioning data as a separate stream. So if an MPEG2 file with closed captioning is converted to an AVI format, the resulting output file will have three streams: Video, Audio and Closed Captioning.
Functions that can be used to manage closed captioning include:
IltmmPlay::put_CloseCaptioning: Used to enable the display of closed captioning data.
IltmmConvert::put_AllowedStreams: Used to preserve Closed Captioning data during conversion from one format to another. The output format needs to be able to accept Closed Captioning data.
IltmmConvert::SetClosedCaptioningTargetFile: Used to save the decoded closed captioning data as either TEXT or SRT files.
IltmmCapture::put_CloseCaptioning: Used to enable the capture of closed captioning data.
Additional functions are listed in the See Also section.
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.