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Open Broadcaster Software

Free, open source software for live streaming and recording

As of 2015-05-27, this project may now be found at

4.3 Stars (27)
4,351 Downloads (This Week)
Last Update:
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NOTE: Please visit our website for downloads.

Open Broadcaster Software is free and open source software for the purposes of streaming live media content to the internet or to video files. Originally I made Open Broadcaster Software for myself because I thought "why should I pay a subscription for software I could probably write?" And so, I did and Open Broadcaster Software evolved into somewhat of a monster of a project. That's pretty much the Open Broadcaster Software story.

I hope people can make use of Open Broadcaster or learn something from it. I know I'm having a ton of fun writing Open Broadcaster and am learning much in the process. Overall it's been an excellent experience.

This project is free and licensed under the GNU General Public License v2.

Open Broadcaster Software Web Site



  • Encoding using H264 (x264) and AAC.
  • Support for Intel Quick Sync Video (QSV) and NVENC.
  • Unlimited number of scenes and sources.
  • Live RTMP streaming to Twitch, YouTube, DailyMotion, Hitbox and more.
  • File output to MP4 or FLV.
  • GPU-based game capture for high performance game streaming.
  • DirectShow capture device support (webcams, capture cards, etc).
  • Windows 8 high speed monitor capture support.
  • Bilinear or lanczos3 resampling.


User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 3 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
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Additional Project Details

Programming Language

C++, C



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