If you watch a video on the app, it can be automatically transcribed into an auto-generated caption. If you want to post videos with caption in the app, you'll have to enable the feature first.
The auto-generated caption is available in 17 languages at the time of writing: English, Spanish, Portuguese, French, Arabic, Vietnamese, Italian, German, Turkish, Russian, Thai, Tagalog, Urdu, Malay, Hindi. There will be support for more languages in the future.
If you want to post a video with subtitles or just want to watch a video with a caption, this is how to turn it on and off.
Turn on / off captions for all videos in your feed
The auto-generated caption is turned off by default. You just need to adjust a single setting if you want to turn the caption on for every video in your feed. You can turn the caption off by repeating the steps.
Tap your profile in the bottom right corner of the screen.
Select the hamburger menu in the top right of the screen, and then select Settings.
Go to Account > Captions, and then toggle the Captions option on. You can toggle the Captionsoption back again if you wish to turn them off.
Turn on captions for a single video
If you don't want the caption on every video, you can turn on the caption for a single video. This is how to do it.
Tap the three dots in the top-right corner of a video.
If the video supports captions, you’ll see an option that says Manage Captions.
Toggle on the Captions option.
Posting a video with captions
The auto-generated videos on the photo sharing site come in handy for creators as well, as this means you won't have to add a caption to your videos. When creating a post, follow these steps to turn the caption on or off.
Start by uploading a video from your gallery or shooting one within Instagram.
When you’re finished applying any edits, select AdvancedSettings from the menu that appears before you post your video.
Under Accessibility, toggle the Show Captions option on or off.
After you post a video, you can always turn on the caption.
Tap the three dots that appear in the top-right corner of your video, then tap Edit.
On Android, select Remove Captionsto disable them.On an iPhone, hit Advanced Settings and then toggle the Show captions option on or off.