Provide closed captioning for videos, whether published to mobile, OTT, Web, or CTV platforms.

MAZ provides tools to enable your app to be ADA (Americans with Disabilities Act) compliant. One of the guidelines requires closed captioning to be available for your video content. Read the below information on how to ensure closed captioning is available for your video content, whether published to mobile, OTT, Web, or CTV platforms.

Important Note: MAZ supports closed captioning for MRSS, JW player and Vimeo.

We only support '.vtt' files on Web & CTV platforms.




Closed Captioning with MRSS and JW Player feeds

Upload an MRSS feed that includes the SRT or VTT subtitle format. Please find details of how the contents .srt file and .vtt should look like here: .srt and .vtt

The MRSS feed must include the following tag for closed captioning to show:

<media:subtitle> or <media:closedcaption> or <jwplayer:track>

We only support '.vtt' files on Web & CTV platforms.

Note : For <jwplayer:track> we will only be looking for kind="subtitles" and kind="captions" instances.

<jwplayer:track file="" kind="subtitles" label="English"/>

The SRT and VTT file must also be included as a href attribute. For example:
<media:subtitle href=""/>


VTT/SRT files are also required to contain the optional sequence values above each timecode.


VTT Example:


00:00:09.200 --> 00:00:10.700
Hello everyone

00:00:10.700 --> 00:00:13.820
Welcome to this example VTT file.

00:00:13.820 --> 00:00:16.520
Follow this spec

00:00:16.520 --> 00:00:20.920
To be sure that your Closed Captioning displays properly

00:00:26.040 --> 00:00:41.320
Thanks for checking this out
Have a wonderful day.


SRT Example:


00:00:00,570 --> 00:00:02,200

Hi there!


00:00:02,200 --> 00:00:03,450

Are you looking to add captions?


00:00:06,850 --> 00:00:09,600

Well then, try adding a SRT to your MRSS feed!


00:00:09,600 --> 00:00:13,343

Use sequence numbers and time codes


00:00:15,960 --> 00:00:18,370

making sure to use proper SRT format.


Closed Captioning with Vimeo

MAZ offers seamless closed captioning/subtitle integration with Vimeo. There is nothing extra you need to do in order to integrate Vimeo subtitles in your MAZ apps. The only requirement is that subtitles should be added to videos, in your Vimeo account. To know more on how to integrate Vimeo with MAZ, click here.

Please Note: It is advised to add subtitles to your videos on Vimeo dashboard before adding your Vimeo feed into a section. If you are adding subtitles to your videos after you have added the feed in the section, please delete the feed from that section and add it again or you can reach out at to reprocess that feed.


NOTE: English (EN and GB) is the only language currently supported for closed captioning.