CART Captions not displaying in Teams with URL API Ingestion code

Question

CART Captions not displaying in Teams with URL API Ingestion code

Amanda Marvin 0

We are trying to use Teams exclusively for our business meetings which need to be closed captioned for accessibility. Recently the API generated ingestion code is not working with Teams Meeting. The CART Captioner is given the ingestion code and puts it into a third-party software, Streamtext. The captions are not displaying in Microsoft Teams. Through troubleshooting we found that the text will display if the RTT Realtime Text option is flipped on in Meeting Options in Teams, however this causes every line to show with the Captioner's meeting name and the line of text next to it. Additionally if the captioner puts in a code to change paragraph, it results in putting another line of the same, the captioner's meeting name with a colon and then the text they are captioning.

This leads to confusing readability and in turn in a meeting participant types in a question as a result of the RTT setting being on, it intermingles their text with the captioner's text and leads to a very jumbled display.

In talking with Nick at Streamtext, who helped develop the Microsoft Teams CART Captioner feature, he suggested I report this is a display error to Microsoft.

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Answer 1

Kha-N 400 Microsoft External Staff Moderator

Hi @AmandaMarvin,

Welcome to the Microsoft Q&A forums and thank you for sharing the details of your issue.

I truly understand how important CART captioning is for accessibility and communication, and I’m sorry to hear that it’s not working as expected in Microsoft Teams. I appreciate your patience while we try to assist.

As a Microsoft moderator, my ability to test and troubleshoot third-party integrations like StreamText is limited. However, I’ll do my best to guide you toward the right support channels.

To help improve Microsoft Teams and raise visibility of this issue, I encourage you to submit feedback through the Microsoft Feedback Portal. This helps our product teams prioritize and investigate recurring problems.

Additionally, while Microsoft support has limitations when it comes to third-party troubleshooting, you may consider reaching out through Unified Support. This channel connects you with Microsoft engineers who can troubleshooting and assist you further.

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Sayali-MSFT 4,026 Reputation points Microsoft External Staff Moderator

2025-08-20T05:14:15.6933333+00:00

Hi @AmandaMarvin,Could you please confirm if your issue has resolved with provided suggestions or still looking for any help?
Amanda Marvin 0 Reputation points

2025-08-20T14:03:44.8166667+00:00

The issue has not been resolved however I will follow the suggestions and submit my question to the Microsoft Feedback Portal as well as the Unified Support.
Tracy Reinke 10 Reputation points

2025-08-20T23:17:40.88+00:00

I am experiencing the same issue as Amanda. Nick at Streamtext has confirm we are hitting the server with the captions, but this is what appears in Teams:

The captions that are there in the screen shot are the auto captions. As soon as you put the API in Streamtext and start it, it switches to "Captioner CART," but nothing is appearing.
Kha-N 400 Reputation points Microsoft External Staff Moderator

2025-08-21T01:25:50.06+00:00

Hi @AmandaMarvin,
Thanks for your understanding and for submitting the issue via Microsoft Feedback and Unified Support. Your persistence is appreciated and could help move things forward.
If you found my initial response partially helpful, please consider marking it as an answer. Warm thanks.
Amanda Marvin 0 Reputation points

2025-08-21T20:03:38.9766667+00:00

We are still looking for help on this unresolved CART Captioning issue.
Kha-N 400 Reputation points Microsoft External Staff Moderator

2025-08-22T10:31:35.2433333+00:00

Hi @AmandaMarvin,

Thanks you for the update. I understand how frustrating this situation is, and I wish I could assist more directly. Unfortunately, as Microsoft Q&A forum moderator, troubleshoot and test third-party integrations like StreamText is limited on my end.

Currently as I checked, raise a ticket through Unified Support is your best option. I realize Unified Support may involve a fee, but it’s the recommended path to engage directly with Microsoft engineers who can help resolve your issues as quick as possible.
Tracy Reinke 10 Reputation points

2025-08-22T16:41:29.5033333+00:00

Amanda, we were able to figure out a way to make captions work. Give the API URL to your captioner. When you get the screen that I shared above, click on auto-generate, and you'll get both the API Streamtext captions and automated captions. Click on Captioner(CART) again, and then you should see ONLY the CART captions. Each person viewing the captions will have to go through this process.
Amanda Marvin 0 Reputation points

2025-08-24T17:40:36.26+00:00

Thanks Tracy, we'll give it a try.
Kha-N 400 Reputation points Microsoft External Staff Moderator

2025-08-27T04:38:49.74+00:00

Hi @AmandaMarvin,
It has been a while, and I am writing to see how things are going with this issue.

Is Tracy workaround is able to work on your end?

Looking forward to your reply.
Kha-N 400 Reputation points Microsoft External Staff Moderator

2025-08-29T01:13:27.91+00:00

Hi @AmandaMarvin,

It has been a few days, and I am just checking in to see if there are any updates on this thread.

Is Tracy workaround also work on your end?

Any update would be appreciated.
Warm thanks.

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CART Captions not displaying in Teams with URL API Ingestion code

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