OBS Studio example

This article describes the steps that you have to take to stream to KLASH from the computer software OBS | Open Broadcaster Software.

First, set up the stream endpoint in OBS to identify where to send the stream.

In OBS, navigate to Settings and then Stream.
Locate the Start stream button on KLASH and expand the button. Choose the External stream. Here you see an RTMP URL and an RTMP Stream Key that you use to configure OBS.
Enter these two values in the OBS Stream as follows:
- Service: Custom.
- Server: Use the RTMP URL from the KLASH External stream.
- Stream Key: Use the RTMP Stream Key from the KLASH External stream.

Secondly, we will configure our video settings.

In OBS, navigate to Settings and then Video.
The frame rate should usually be set at 30 fps. A higher FPS puts more strain on the computer, which could cause stuttering.

Lastly, set the quality parameters of the stream.

In OBS, navigate to Settings, Output, and then Streaming.
Set the output mode to Advanced.
Disable B-Frames, since leaving it enabled can lead to stuttering during streams. Disabling B-Frames is done in different ways depending on the chosen encoder.

For the x264 video encoder: Input “bframes=0” in the text field “x264 Options”.
For the Apple H264 Hardware/Software encoder: Untick the box “Use B-Frames”.
For NVIDIA encoders: Set the B-Frames field to 0.
For other encoders: Look for an option with B-Frames in the name and disable it by unticking or setting its value to 0, whichever is relevant.

Note: It’s recommended to use your monitor’s native resolution for the best experience. However, if you’re using a 2K or 4K screen and experiencing lag while streaming, consider lowering the resolution to HD quality (1080p). You can do this by enabling the Rescale Output feature and setting it to 1920x1080p.

Bitrate is the amount of data you send to KLASH. The higher the bitrate, the better the quality. If you have a higher resolution, the bitrate needs to increase.

Recommended bitrate and resolution ratios: