Broadcasting to an RTMP Server

To connect to our RTMP Servers you will need a server url and a stream key, both obtained prior to any live broadcast. below will be the tutorials on how to input our URL and stream key for your broadcast.

Open Broadcaster Studio:

CUSTOM RTMP LINK

Launch OBS Studios and head over to the settings tab in the bottom right of your window or select File and then settings, in the upper left navigation.

Once inside the settings tab head on over to the section called ‘Stream’.

Inside here you will see a dropdown for services, this will give you the options to broadcast to different services, such as Twitch.tv / Youtube / Facebook and many more.

Select the ‘Custom‘ Tab near the bottom.

Once selected, you will be able to input a custom URL and Stream key into the windows below, for example, an image has been placed below, to show the correct format.

Once you have received the URL and Stream key, you can hit apply and ok.

You will be provided a time when to press the button Start Broadcast, located on the lower right of your main-streaming dashboard.

Setting up Audio

In the settings tab, head over to the ‘Audio’ category and select sample rate, this is your windows defined sample rate, 48khz is selected by default to avoid any audio crackling.

Now select your channels to Stereo, this provides a left and right plane of audio, mono audio can be used as a filter or advanced audio format.

below is an example of your audio configuration.

(please note that your input and output devices change per computer.)

Output settings:

By selecting the category ‘Output’ on the left-hand side, this will detail all broadcasting quality, based on your internet speed.
Your output method should be set to ‘Simple’, for easier use.

Video Bitrate:

Our accepted bitrate range is set to 3500Kbps.

Encoder:

• x264 for cpu based performance.
• NVIDIA NVENC H.264 (NEW) for gpu based performance
• H264/AVC Encoder (AMD Advanced Media Framework) for gpu based performance

The basic x264 encoder will be set up by default, depending on the simulator you are broadcasting, for example, DCS world uses high GPU Priority, this gives better use for x264 encoder, allowing the CPU to handle the majority of the broadcast.

Audio Bitrate:

The basic audio bitrate is set to 160 an average audio sample.

If your hardware and bandwidth are able to increase audio bitrate, this can be adjusted.

Quality Guide –

• Medium                – 128
• High                      – 192
• High Quality         – 256
• High Defenition   – 320

Recoding your display is by option, but please note, that broadcasts to the mainstream will be recorded.

Output Resolution:

Head over to the Video’s Catagory on the left-hand side, this will display two resolution settings.

Base: The base resolution of your content, as we require 1920×1080 (1080p), the base can also be the resolution of 3840×2160 (4k) along as your downscale and output kbps are set to the highest capture rate for our servers.

by default, a canvas of 1920×1080 is the best choice.

Output:

Your output resolution must be 1920×1080, compacting or simplifying the output data across all streams, keeping continuity in place.

Downscale filter: (default setting to Bicubic)

FPS:

Frames per second must be set to 60fps, if unable to do so, please select 30fps. note that at 30fps your content may become less smooth.