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Streaming With OBS Studio

How to use OBS Studio with FTL (sub second latency)

This is a step by step guide to get you streaming to Mixer with OBS Studio.

  1. Download OBS Studio from https://obsproject.com/
  2. Once downloaded and installed, head to File > Settings
  3. Open the “Stream” tab. On this screen you’ll want to:
    • Stream Type: Streaming Services
    • Service: Mixer.com - FTL
    • Server: auto
      • We highly recommend auto.
      • Only hand pick a server if you have trouble.
    • Stream Key: 
      • Your stream key is your secret code that allows you to stream to your channel (Do NOT share this key with anyone!). To grab your Stream Key, head to the Manage Channel page on Mixer.com by clicking your avatar in the top right of the page and then Manage Channel. Click the double square icon to copy the key - paste it into OBS Studio. mixer-streamkey.png
    • Click Apply.
  4. Next click on the "Output" tab. In this section:
    • Output Mode: Simple
    • Video Bitrate:
      • This setting intimately depends on the upload speed of your internet. We recommend most users use 2000kbps to 7000kbps. See Stream Settings: The Basics for more information regarding these settings. 
    • Click apply.
  5. Click Apply once again and then OK. Now you're setup! Just hit Start Streaming and you should be live on Mixer!

Advanced OBS Studio Settings:

* Advance settings are all about trade off. High bitrate make a better quality, but more bandwidth. Slower encode produces better quality, but has more latency. We encourage streamers to play with all the settings to figure out what’s best for them.

  1. Head to Settings and then the Output tab.
  2. Output Mode: Advanced
  3. Encoder: 
    • x264:
      • Software encoder that will use up your CPU.
      • Typically has lower latency.
      • Typically has a lower stream quality.
    • NVENC H.264
      • Only streamers with Nvidia graphic cards will have this option.
      • Doesn't use any CPU resources.
      • Has slightly higher latency over CPU encoding.
      • Typically has better quality than CPU encoding. 
    • Rate Control: CBR
    • Bitrate:
      • This setting intimately depends on the upload speed of your internet. We recommend most users use 2000kbps to 7000kbps. See Stream Settings: The Basics for more information regarding these settings. 
    • Keyframe Interval:
      • Recommended 1-3
      • The higher the number, the better the stream quality, but the longer it takes your stream to load and recover from packet loss for your viewers.
    • Preset:
      • Higher quality better looking stream, but higher latency. For CPU encode the higher quality will also require more CPU.
    • Profile: Main
    • Tune: [CPU only] zerolatency for super low latency streams. (None) for higher latency.
    • x264 Options: Paste in "bframes=0"

 

How to use OBS Studio with RTMP (higher delay)

  • We recommend you use FTL, but if your internet isn't strong enough to support FTL, RTMP might be a good option.
  1. Download OBS Studio from https://obsproject.com/
  2. Once downloaded and installed, head to File > Settings
  3. Open the “Stream” tab. On this screen you’ll want to:
    • Stream Type: Streaming Services
    • Service: Mixer.com - RTMP
    • Server: Usually you'll want to select the closet ingest server to your location. If you’re unsure which ingest to pick, visit https://mixer.com/me/channel and click "setup stream". Then "Use OBS" and you’ll be given the closest ingest. beam2_ingest.png
    • On the same screen as the ingest above, you’ll also see your stream key. You’ll want to copy and paste that into Stream key in OBS Studio (Do NOT share this key with anyone!). Please make sure there is no spaces before or after the key.
    • Click Apply.
  4. Next you’ll want to click the “Output” tab. On this screen you’ll need to enter your Video Bitrate to a respected upload that you have through your internet provider. You can check this by visiting speedtest.net. Please note that we currently have a bitrate cap of 10000kbps. See Stream Settings: The Basics for more information regarding these settings. 
  5. Click Apply once again and then OK. Now you're setup! Just hit Start Streaming and you should be live on Mixer!

For more in depth information on setting up different resolutions and quality, see here.

There are many other options in OBS Studio that you can play around with to fine tune your quality and experience. You can find many tutorials online or on the official OBS website here.

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