Simulcast

Simulcast allows you to simultaneously broadcast to multiple 3rd party platforms while also broadcasting from your website.

The most common platforms that people are simulcasting to are: Youtube Live, Facebook Live, Twitch, and Tik Tok

Simulcasting maximizes your reach and bring new viewers to your content.

To use the simulcast feature

• Go to your Backoffice

• Create or edit an upcoming live

• Scroll down to find the Simulcast Switch

• Add up to 5 channels

• Start your live from your external source or the mobile -> the live will automaticaly start on your website and all the added channels.

• Stop the live like usual. Some channel like Facebook will require you to stop the live also from the facebook live moderation tool otherwise Facebook viewers will see a frozen frame after the end.

Chat moderation has to be done on the original channel, for exemple if you stream on facebook, you need to use the facebook moderation page to see the chat, viewers...

Simulcast is not available for Instagram (you can only go live from the Instagram app)

Facebook

To create a live stream on Facebook:

• Go to https://www.facebook.com/live/create.

• Click Create Live Stream.

• Choose where you want to post your live broadcast.

• Click Select from Go Live module.

• Click Streaming Software from Select a video source section.

• Copy and paste the Server URL and Stream key or Persistent stream key into the settings of your streaming software and start the video stream from your encoder. A preview screen will appear.

• Write a description and title for your live stream from Add post details section.

• Click Go Live Now. If you want to schedule your broadcast for later, click Select from Create live video event module from Choose Video Type module.

More informations on how to find your Stream Key:

Go live on Facebook using streaming software | Facebook Help Center

Tik Tok

To find you RTMP information on Tik Tok

• Open the TikTok app and select the plus sign at the bottom.

• Select the LIVE option.

• Choose your title and filter effects.

• Select the Cast to PC option underneath the Go LIVE button.

• You’ll see your TikTok stream key and server URL

To stream on Tik Tok you must have at least 1,000 followers.

Twitch

Stream keys are assigned by Twitch. Retrieve your stream key from the Creator Dashboard (Settings -> Stream)

More informations on how to find your Stream Key https://help.twitch.tv/s/article/twitch-stream-key-faq?language=en_US

How to get you RTMP URL https://stream.twitch.tv/ingests/

Youtube

Go to YouTube. From the top right, click Create and then Go live.

You’ll see a screen with settings for your stream. Under Stream Settings, you’ll see your stream key, which you can reset or copy and your RTMP Server.

More information on Youtube live-streaming:

https://support.google.com/youtube/topic/9257891?hl=en&ref_topic=9257610support.google.com

Settings recommendation for Simulcast

If you dig into all the guides for these platforms you'll see that they each have their own specific requirements and guidelines

Follow our recommendations to make sure your viewers get the best experience for every platform

Advanced settings for Simulcast

Facebook	Twitter	Twitch
Resolution: Up to 1920 × 1080	Resolution: 1280 x 720 (recommended) and 1920 x 1080 (maximum)	Resolution: 1920 × 1080
FPS: max 60	FPS: max 60	FPS: max 60
Codec: H.264 (x264)	Codec: H.264 (x264)	Codec: H.264 (x264)
Mode: Strict CBR	Mode: Strict CBR	Mode: Strict CBR
Keyframe Interval: 2 seconds (recommended), max 4	Keyframe Interval: 3 seconds	Keyframe Interval: 2 Seconds
Max Bitrate: 9,000 Kbps	Max Bitrate: 9,000 Kbps (recommended) and 12,000 Kbps (maximum)	Max Bitrate: 6,000 Kbps
Audio Guidelines:	Audio Guidelines:	Audio Guidelines:
Codec: AAC-LC, Stereo or Mono	Codec: AAC-LC, Stereo or Mono	Codec: AAC-LC, Stereo or Mono
Max Bitrate: 128 Kbps (AAC), max 256 Kbps	Max Bitrate: 128 kbps (AAC)	Max Bitrate: 160 kbps (AAC)
Sampling Frequency: 44.1 (AAC)	Sampling Frequency: 44.1 (AAC)	Sampling Frequency: 48.0 (AAC)

Youtube

YouTube has fewer limitations than other platforms. Make sure that you choose a quality that will result in a reliable stream based on your Internet connection. Here are the best settings for YouTube..

Linkedin

If your stream exceeds any of these requirements, especially the FPS, LinkedIn will not allow the stream to connect to its platform.

Duration: max 4 hours Aspect Ratio: 16:9 Resolution: max 1080p Frame Rate: max 30 fps Key Frame: every 2 seconds (60 frames) Bitrate: max 6,000 Kbps video; max 128 kbps audio, 48 kHz sample rate Encoding: H264 video, AAC audio Protocol: RTMP/RTMPS (preferred)

To go further

We Video accepts most modern video formats and CODECs. However, certain types of inputs need to be normalized in order for us to do further operations on them, and this can add time before the video is ready to be streamed. If you want to normalize your content before sending it to us, and potentially improve performance, this guide will show what you need to do.

Standard input has the following attributes.

• 1080p/2K or smaller. Video up to 2048x2048 is considered standard, including 1080p (1920x1080) video. Video larger than this is considered non-standard.

• H.264 video CODEC. H.264 is the dominant video CODEC in use today and almost every device supports H.264. While we accept other CODECs as input, other CODECs must be normalized to H.264 and are considered non-standard.

• Max 20-second keyframe interval. To stream well using HTTP-based streaming methods like HLS, we require all keyframe intervals to be less than 20 seconds.

• Closed GOP (group-of-pictures). (Warning: video jargon ahead. You can likely ignore this.) In a closed-GOP video, all B frames reference other frames in the same GOP. Closed GOP always begins with an IDR (Instantaneous Decoder Refresh) frame. This means that every GOP can be played independently, without reference to another GOP. Standard input must be closed-GOP, which means that open-GOP video will be treated as non-standard and will be normalized to standard.

• 8Mbps or below. While we accept higher bitrate inputs, bitrates higher than 8Mbps (and the bitrate should not exceed 16Mbps for any single GOP) are generally challenging for most viewer's connections and are considered non-standard.

• 8-bit 4:2:0 or below. This refers to the colour depth and chroma subsampling. If you don't know what this is, you can probably ignore this, since most streaming video is 8-bit 4:2:0. This means that high dynamic range video (HDR) is currently considered non-standard, and will be normalized to SDR.

• Simple Edit Decision Lists. Edit Decision List (EDL) is typically added during post-production and defines how certain segments are used to build the track timeline for playback. A good example of a Simple Edit Decision List is to fix out-of-order frames in the video. Video with more complex uses of EDLs are considered non-standard.

• Frame rate between 5 and 120. Video with average frames per second (fps) less than 5 or greater than 120 is considered non-standard. Video frame rates within this range will be preserved. Video with less than 5 fps or greater than 120 fps will be normalized to 30 fps.

• AAC audio CODEC. AAC is the dominant audio CODEC in use today and almost every device supports this audio CODEC. While we accept other CODECs as input, we only deliver AAC audio and non-AAC audio inputs are considered non-standard...