Closed Caption file types supported by PowerPoint

Some videos contain multiple files for things like closed captions or subtitles. If you insert a video into PowerPoint and the video container has closed captions, PowerPoint's media player may or may not support playback of closed captions depending on their file format and which version of PowerPoint you’re using.

In the table below, you can find the supported file formats for closed captions in PowerPoint. File format support is based on which file formats the operating system can decode and/or parse. The information in the table is not exhaustive and is subject to change.


  • New Microsoft 365 features are released gradually to Microsoft 365 subscribers, so your app might not have these features yet. To learn how you can get new features faster, join the Office Insider program.

PowerPoint for Windows

PowerPoint for Mac

PowerPoint for iPad or iPhone

PowerPoint Mobile

MPEG-4 with CTA 608-E (R2014)

MPEG-4 with ISO/IEC 14496-17:2006 (MPEG-4 Timed Text)

MPEG-4 with ISO/IEC 14496-17:2006 (MPEG-4 Timed Text)

MPEG-4 with CTA 608-E (R2014)

MPEG-4 with CTA 708-E

MPEG-4 with CTA 708-E


Learn more in the topic Add captions or subtitles in PowerPoint

MKV with various closed caption formats

See also

Accessibility features in video playback on PowerPoint

Set up your device to work with accessibility in Microsoft 365

Make your PowerPoint presentations accessible

Technical support for customers with disabilities

Microsoft wants to provide the best possible experience for all our customers. If you have a disability or questions related to accessibility, please contact the Microsoft Disability Answer Desk for technical assistance. The Disability Answer Desk support team is trained in using many popular assistive technologies and can offer assistance in English, Spanish, French, and American Sign Language. Please go to the Microsoft Disability Answer Desk site to find out the contact details for your region.

If you are a government, commercial, or enterprise user, please contact the enterprise Disability Answer Desk.

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

Thank you for your feedback!

Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.