OBS Guide - Video
Before installing OBS please do a speed test using http://speedtest.xcdnpro.com This will test your connection with our servers.
![](https://www.cam4support.com/wp-content/uploads/speedtest.png)
Based on your results here are our recommendations regarding the resolution and Bitrate (you will need to set this once you configure OBS)
Upload Speed | Resolution | Bitrate |
higher than 9Mbits /s | 1920x1080 | 4000 Kbps |
between 5Mbits and 9 Mbits | 1280x720 | 3000 Kbps |
between 3Mbits and 5Mbits | 960x720 | 2500 Kbps |
between 2Mbits and 3Mbits | 800x600 | 2000 Kbps |
less than 2Mbits | 640x480 | 1000 Kbp |
- Download OBS software from https://obsproject.com/download
Please Note: There is a phishing campaign at the moment that encourages downloading OBS from non-official sites. Please make sure you download the version available on the official website only
- Select the Operating System (Windows / MacOS / Linux)
![](https://www.cam4support.com/wp-content/uploads/obsdownload-1024x610.png)
- Click on Download Installer
- Once the download is finished, install the application
- Open OBS software
- The first time you open OBS you will be asked if you want to Auto Configure OBS → Click CANCEL
![](https://www.cam4support.com/wp-content/uploads/cancel.png)
- Click on + To add a new Video Source
![](https://www.cam4support.com/wp-content/uploads/addvideo-1024x673.png)
- Select Video Capture Device
- Input desired name
- Check "Make source visible”
- Click OK
![](https://www.cam4support.com/wp-content/uploads/videocapture-1024x677.png)
- Device: Select desired Webcam (ex: Logitech C920)
- Check “Use Preset”
- Resolution: Select the Recommended resolution based on the speed test
- Frame rate: 30
- Click OK
![](https://www.cam4support.com/wp-content/uploads/capture-properties-1024x675.png)
- Click On SETTINGS
![](https://www.cam4support.com/wp-content/uploads/settings-1-1024x674.png)
- Choose the STREAM TAB
![](https://www.cam4support.com/wp-content/uploads/streamtab-1024x673.png)
-
Select Service → Show All… → CAM4
-
Select Server → CAM4
- In order to get the Stream Key you need to open the Broadcast Window on Cam4
- Choose External Encoder
- Choose Get Stream Key
- Copy the Stream Key
- Choose External Encoder
- Choose Get Stream Key
- Copy Stream Key
- Paste the Stream Key from cam4 into the input field
![](https://www.cam4support.com/wp-content/uploads/pastestreamkey-1024x674.png)
- Choose the OUTPUT TAB
Go to Output Mode - Select Advanced from the dropdown list
![](https://www.cam4support.com/wp-content/uploads/outputtab-1024x675.png)
IF Encoder is x264 use the following settings:
- Rate Control: CBR
- Bitrate: Based on internet speed (see above table)
- Keyframe Interval (seconds, 0=auto): 1 CPU Usage Preset (higher=less CPU): veryfast or superfast (depending on hardware)
- Profile: main
- Tune: zerolatency x264 Options (separated by space): bframes=0
- Note: For x264 options you need to copy+paste the values manually
IF Encoder is QuickSync use the following settings:
- Check the box for Enforce streaming service encoder settings
- Target usage: balanced
- Profile: main
- Keyframe Interval (seconds, 0=auto): 1
- Async Depth: 1
- Rate Control: CBR
- Bitrate: The one recommended (see above table)
- B frames: 0
- Check the box for Content Adaptive Quantization
- Choose the VIDEO TAB
- Base (Canvas) Resolution: Use the recommended resolution based on the speed test (ex: 1280x720)
- Output (Scaled) Resolution: Use the same resolution as the Base (Canvas) Resolution
- Downscale Filter: Bilinear
- Common FPS Values: 30
- Choose the ADVANCED TAB
- Scroll down to Network Area and check the following box: “Dynamically change bitrate to manage congestion”
- Click OK
- Click Start Streaming
- Open Broadcast window on CAM4 → Select External Encoder
- Allow flash (if it asks for it 1.1)
- Click Start Broadcast (1.2)
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