American micro-blogging and social networking service Twitter has rolled out automatic captions for videos.

Auto captions will be available on the web, iOS and Android in over 30 languages, including English, Hindi, Spanish, Japanese, Arabic, Thai, Chinese and more, IANS has reported.

The captions will only be added for new videos which means that those videos that have already been uploaded to the social network won’t get automatic captions.

Currently, Twitter’s auto-captions are not editable, this feature is being tested on both Android and iOS for users in certain countries.

Twitter said in a statement, “Where are video captions when you need them? They are here now automatically on videos uploaded starting today. Android and iOS: auto-captions will show on muted Tweet videos; keep them on when unmuted via your device’s accessibility settings. Web: use the “CC” button to turn on/off.”

The company said it is a visual-forward way of surfacing content that already exists on Twitter and it is a part of Twitter’s ongoing effort to improve personalised recommendations and discovery across the platform.