A self-service multilingual streaming platform

Clevercast makes it easy to deliver multilingual live streaming to global audiences. Our live management dashboard allows you to broadcast, translate and stream live video with any number of audio languages and closed captions.

If your interpreters are present at the event location or in the studio, their audio streams can be sent to Clevercast along with the video stream as an SRT multi-track or RTMP multi-channel broadcast.

If not, they can use Translate@Home (T@H), our award-winning solution for multilingual live streams with Remote Simultaneous Interpretation (RSI). Translate@Home allows remote interpreters to add their translation to a live video broadcast. This is possible as audio translations and as closed captions. They only need an internet connection and their browser, in order to use Clevercast’s RSI interface.

Finally, you can let Clevercast automatically generate multilingual closed captions for a live stream through speech-to-text conversion (with optional human correction) or human transcription. In both case, the output can also be automatically translated to closed captions in multiple languages.

In each of these cases, Clevercast delivers a high-quality, global live stream using adaptive streaming. Our multilingual video player allows your viewers to switch to their preferred language while watching the video. Clevercast player provides the best possible experience on any device and platform.

If you require a fully hosted solution, you can also use Clevercast Webinar with multilingual streaming. If your content is pre-recorded you may want to use pseudo-live streaming, with support for closed captions and audio translations.

Audio translation at the event

Traditionally, a multilingual live stream with simultaneous translation is broadcasted with interpreter booths at the event location. In that case, all audio streams are sent along with the video stream. Clevercast offers several ways to do this:

» An SRT broadcast with an audio track for each language. Up to 32 languages are possible, depending on your SRT encoder (eg. Makito XIntinor, OBS Studio).

» A multi-channel RTMP stream with an audio channel for each language (via OBS Studio). Multi-language streaming for up to 7 languages is possible.

» If you only need two languages, you can use any encoder (eg. vMix, Wirecast) to send a stereo broadcast (RTMP or SRT) to Clevercast in which the languages are panned L+R.

» Sending a separate RTMP broadcast per language is also possible, if you only need a couple of languages and have sufficient outgoing bandwidth. Note: this is not included in our standard plans.

Remote interpretation (T@H)

Translate@Home (T@H) lets interpreters add remote simultaneous interpretation to a live stream using only their internet browser. Both audio translation and closed captions are supported. The number of languages is unlimited.

It works like this:

» A regular SRT or RTMP broadcast with a single audio stream is sent to Clevercast.

» Clevercast allows interpreters to see and hear the incoming livestream and add an audio translation. Or they can add a textual transcription for closed captions.

» As an event manager, you can use Clevercast to manage the interpreters and live stream.

» Clevercast merges the translated audio streams and/or closed captions with the broadcasted video and audio. The result is a multilingual live stream that can be watched globally on every device or platform.

Multilingual closed captions

Clevercast allows you to add any number of closed captions to your live stream through speech-to-text with correction, real time transcription and automatic translation into multiple languages.

» In the Clevercast backend, simply select the closed caption languages.

» When using manual transcription, use the Transcription Room. When using speech-to-text, you can use the Correction Room for editing captions.

» Viewers can watch the live stream globally on every device or platform via our embedded player. The player’s closed caption menu allows them to select their preferred language.

» The closed captions are recorded by Clevercast and can be used for Video on-Demand, in the same way as T@H.

» Multilingual closed captions can be combined with audio translation via T@H.

Use the CC menu to select closed captions and the headphone menu to switch the audio language.

Video: Tears of steel | (CC) Blender Foundation | mango.blender.org. Since no audio translations are available, we added a voice over in the extra audio languages that tells you to which language you are listening.

A customizable multilingual video player

You can add our video player to a website or a third-party platform by just copying its embed code. Clevercast player works on any device or platform. You can customize it via our web application or API.

Clevercast transcodes any incoming video stream into multiple resolutions for adaptive streaming. The player automatically switches to the best possible resolution depending on screen size, bandwidth and CPU/GPU.

Clevercast player can show a countdown timer, as well as custom images or messages. It supports a redundant set up: if the main stream becomes unavailable, the player will automatically detect this and fail over to the backup stream.

Viewers can select their preferred audio language (headset menu) or closed captions (CC menu – available for pseudo-live streams and soon also for regular live streams).

Fragment from Sintel by the Blender Foundation. Press the headset menu to change the language.

Multilingual broadcasts with OBS Studio

OBS Studio can broadcast a video stream with multiple audio channels over RTMP or with multiple audio tracks over SRT. This way, you can add many audio streams to your broadcast without having to include additional video streams.

Clevercast receives the broadcast and automatically transmits it as a global live stream. You can use the Clevercast dashboard to configure your live broadcast, monitor the live stream(s), see realtime statistics and much more.

Clevercast player can be easily embedded on your site. Just copy-paste the embed code from Clevercast and provide your viewers with the best possible experience on any device, in their own language.

Brands and organizations using Clevercast for multilingual live streaming

How to use Translate@Home?

Translate@Home allows remote simultaneous interpretation for any number of languages. It requires no expensive equipment or advanced knowledge. You can broadcast the live stream with OBS StudioWirecastvMix or any other encoder. You can also use an in-browser studio or even re-stream your Zoom meeting.

Interpreters only need a fast, wired internet connection and a good headset. You send them a secure link to their language room in Clevercast. They use it to watch the live stream, translate in realtime and communicate with each other via a browser that supports WebRTC (preferably Mozilla Firefox). Several translators can alternate for the same language.

For more info, see the T@H overview page.


Live stream manager
Our live stream dashboard allows you to configure and control all aspects of your live stream. It lets you select your languages, preview the broadcast, get info about stream quality, show a custom image before and after the live stream…

Branded multilingual video player
Our responsive HTML5 player can be styled as desired. It supports video advertising, advanced styling (CSS) and custom behaviour (buffering, pre-loading). It works out of the box, in any modern browser and on any device (tablet, smartphone).

Easy embedding
The embed code for every live stream can be copy/pasted to any website(s). Works on any modern device and platform.

Realtime adaptive transcoding
Clevercast automatically transcodes your incoming broadcasts into multiple resolutions for adaptive streaming, including HD. Our player automatically switches to the best resolution depending on screen size, bandwidth and CPU/GPU.

Limit stream accessibility
You can determine who can watch your live stream by configuring white and blacklists for countries, domains and IP addresses.

Detailed analytics
Our realtime dashboard informs you how many viewers are watching and from which country. Our analytics dashboard provides more detailed insights into the behaviour of your viewers.

Recording and Video on-Demand streaming
Clevercast supports server-side recording and conversion to multilingual Video on-Demand (if included in your plan).

Pseudo-live streaming
This allows you to stream a recorded video with multiple languages as if it were a live stream. Viewers will not see any difference.

Player API
The player API lets you add arguments to the embed code (eg. default caption selected) or customize player behaviour using Javascript.

Frequently Asked Questions

How many languages are possible?
» Translate at Home (T@H): unlimited, both for audio translations and (automatic or manual) closed captions
» SRT multi-track broadcast: up to 16 languages, depending on your encoder
» RTMP multi-channel broadcast (OBS Studio): up to 7 languages via 7.1 channels

Do I need a special encoder?
No, OBS Studio has support for SRT multi-track and RTMP multi-channel broadcasts. A broadcast for Translate@Home can be sent with any encoderin-browser studio or third-party solution that supports RTMP or SRT broadcasting (eg. vMixZoom).

Do you have worldwide coverage?
Yes. We use the global Akamai Content Delivery Network (CDN) to deliver the live stream close to your viewers all over the world.

How many concurrent viewers can watch the live stream?
Since we use global CDNs, any number of concurrent viewers is possible.

Do you also provide interpreters?
No. But we can refer you to a partner company with professional interpreters.

What are the costs? Do you offer event support?
Use our price calculator to calculate the price for your monthly plan. For more info, see our pricing FAQ.

Can I limit access to registered viewers and let them interact via Q&A and text chat?
Yes. Clevercast Webinar also supports multilingual live streams. For webinars, you will need a different plan.

Can Clevercast simulcast single language streams?
Yes, simulcasting the video with a single language (eg to YouTube, Facebook) is currently available as an optional feature.

More questions?
See our FAQ pages.

Getting started

To get started with a specific solution, go to the overview page:

If you still have questions, check out our FAQs:

Or ask for a trial account. In Clevercast, click on the question mark in the upper right corner for our user manuals.

More info

Want to try it yourself?

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US Chamber of Commerce – International Events and Congresses


Still – Press Conferences with realtime translation in 4 languages


Zinzino – Hybrid Conference with RSI to 12 languages


EU Conference with 9 languages

multilingual-live-streams multilingual-livestream

Caterpillar – Live Events with realtime translation


SPAR – Live Marketing Events with realtime translation


SIAC – Virtual Conference of the Inter-American Society of Cardiology


Live Medical Congress from Chile using T@H


8 Multilingual Marketing Webinars for Davines


mindandvision GmbH – T@H with Einfache Sprache


Sar-El Group – 7 day conferences in 12 languages


Europalco – Multilingual Live Events

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Avivox – Multilingual Live Events


Neolife Multilingual Webinar with T@H

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DPG Media – Multilingual Press Conferences


Schwarzkopf – Multilingual Workshop

multilingual-live-streams multilingual-livestream

Amway – Platinum Meeting

multilingual-live-streams translate-at-home

Stauff – multilingual company communication

multilingual-live-streams translate-at-home

On Air Multimedia – weekly multilingual streams


Learnence – multilingual live events


Approved by clients, interpreters and viewers

Our clients not only get a multilingual streaming solution, but also the necessary support. Upon request, we can provide remote event supervision or a custom setup.

Based on their feedback, we continue to develop T@H into an easy-to-use tool that allows interpreters to get the best out of themselves.

Clevercast Player provides viewers, anywhere in the world, with the best possible video and audio quality in their preferred language.