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.

Below is a table of supported file formats for closed captions. File format support is based on which file formats the operating system can decode and/or parse. If the file format is supported, it's listed as “Yes”. If it isn’t, it’s listed as “No.”

File Type

PowerPoint for Mac

PowerPoint for iPad or iPhone

PowerPoint Mobile

CEA 608

Yes

Yes

Yes

CEA 708 - Apple Variant

Yes

Yes

No

CEA 708 - Windows Variant

No

No

Yes

WebVTT

No

No

No

TTML

No

No

No

SRT

No

No

No

ASS/SSA

No

No

No

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