A self-service multilingual streaming platform

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

Traditionally, when broadcasting video with simultaneous interpretation, all translators have to be present at the event location. Their audio streams are sent to Clevercast along with the video stream (as an SRT multi-track or RTMP multi-channel broadcast). Clevercast turns them into a high-quality, global live stream (with the help of Amazon CloudFront). We recommended this method for high-profile media or entertainment events, since it gives you full control over the audio streams (mixing, sound levels …).

With our new Translate at Home (T@H) service, we allow you to broadcast only the video and original audio stream to Clevercast (over SRT or RTMP). Translators don’t have to be present, they can do the simultaneous translation at home, via a browser that supports WebRTC (preferably Mozilla Firefox). Translate at Home is suited for presentations, conferences… where you don’t need a dynamic audio mix of the interpretations.

Clevercast’s multi language 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 (using adaptive streaming). You can embed Clevercast player on your website.

For more info, see our Multi-Language Streaming FAQ.

Two ways to create a multilingual live stream

Translate at the Event Location

Traditionally, a multilingual live stream with simultaneous translation is broadcasted with all interpreters present at the event. In that case audio streams are broadcasted along with the video stream. Clevercast supports multiple broadcast protocols that allow you to do this:

» An SRT broadcast with an audio track for each language. The SRT protocol is reliable for broadcasts over very long distances and may contain multiple audio tracks. Clevercast lets you turn an SRT broadcast with multiple audio tracks (supported by OBS Studio) into a multilingual livestream.

» A multi-channel RTMP stream with an audio channel for each language. OBS Studio, the free and cross-platform streaming software, is capable of broadcasting video with surround sound audio streams. Clevercast allows you to use this feature for multi-language streaming. Just add an audio channel for each language to your RTMP broadcast and start streaming.

» A separate RTMP stream per language. If you only need two or three languages and have sufficient outgoing bandwidth, you may decide to go for a setup with multiple RTMP broadcasters sending a regular RTMP stream (video+audio stream) for each language.

NEW: Translate at Home (T@H)

In COVID-19 times, it may not be possible for all interpreters to gather at the broadcast location. Clevercast’s new Translate at Home (T@H) functionality allows translators to provide remote simultaneous interpretation from their own home using only a webbrowser.

It works like this:

» From the event location, a regular SRT or RTMP broadcast is sent to Clevercast. This contains the video stream and the single original audio stream (floor language).

» For each additional language you set up, Clevercast provides a language room to translators. In this room, they can see and hear the incoming livestream, connect their microphone and start translating in realtime. Multiple translators can use the same room. The number of languages is no longer limited by your encoder.

» Clevercast receives the audio streams of the translators and merges them with the original broadcasted stream. The result is a multilingual live stream that can be watched globally on every device or platform via Clevercast player.

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 using our CDN and Amazon CloudFront. 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.

How to Translate at Home?

Translate at 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 even re-stream your Zoom meeting.

Interpreters only need a fast, wired internet connection and a headset with noise cancelling. 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 their browser (Mozilla Firefox). Several translators can alternate for the same language.

For more info, see the T@H overview page, our guide for translators and instructions for broadcasters and our general broadcasting guidelines. The number of languages you can add depends on your Clevercast plan.

Want to try it yourself?

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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 pancarte before and after the live stream…

Company 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).

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

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.

Realtime adaptive transcoding
Clevercast automatically transcodes your incoming broadcasts into multiple resolutions for adaptive streaming, including HD.

Priority support
Get a support plan according to your needs with faster response times, uptime service level agreements or even a dedicated support engineer for live stream monitoring.

Frequently Asked Questions

Can I broadcast a multilingual livestream without huge costs?
Yes. OBS Studio is free, open-source software and supports multilingual webcasts (see the OBS surround sound manual). But feel free to contact us if you’re unsure or need help with the production.

Do I need much technical knowledge to use Translate at Home?
No. You should only be able to broadcast a video over RTMP or SRT.

Can I use Translate at Home for any number of languages?
Yes. Since the realtime translation is done in Clevercast, there are no limitations.

Can I show the video player on any website?
Yes. Our player can be easily embedded on any website, by simply copy-pasting the embed code and/or using the Javascript API.

Do my viewers need to install any software or browser plugins?
No. Clevercast player is an HTML5 player that works out of the box, in any modern browser and on any device (tablet, smartphone).

Can a multilingual live stream be combined with webinar functionality like viewer registration, interactivity…?
Yes. Clevercast Webinar also supports multilingual live streams.

What happens if there are (network) issues during the live broadcast?
Clevercast is fully redundant, so you can also broadcast to a backup URL. If the main live stream is unavailable, Clevercast player automatically switches to the backup stream.

Do you have any questions?

Contact us