Open source recording Studio software

December 11, 2016
For video editing software

The OBS Studio user interfaceIt may be a relatively niche market, but not all video editing is done in post production. There are use cases for live, on-the-fly video editing and basic compositing. You've seen it done yourself, whether you realize it or not—news broadcasts, live webcasts, and live TV events usually use multiple-camera setups controlled by one central software suite.

OBS Studio (formerly Open Broadcaster Software) is an open source central control room for live, realtime video editing. It features instant encoding using x264 (an open source h.264 encoder) and AAC and streams to services like YouTube, DailyMotion, Twitch, your own streaming server, or just to a file.

Scenes and sources

Assuming you have installed OBS Studio, you can launch it as usual. It is compatible with Pulse Audio, ALSA, and JACK, so you can manage audio however you prefer. ALSA and Pulse are the most straightforward, although JACK offers more options.

The initial window of Open Broadcast Studio is the main way for controlling the application.

The large video monitor in the middle is your canvas; anything in that screen is being streamed to your delivery destination. The panels in the bottom of the window are quick-access lists to scenes and sources.

You can think of scenes as directories that contain sources, which are clips or streams of media.

The first step is for you to create your sources. These are probably location-based; if you have a studio setup, some pre-recorded video files, and some on-screen footage, then one source might be studio, another vids, and the third screencap.

If your studio set up has two cameras, then create two sources within the scene. Sources can be nearly any kind of media you can imagine: still images on your hard drive, webcam feeds, JACK inputs, video files, and more. For example, to add a video camera as a source, click the plus button under the sources window and select Video Capture Device (V4L2).

Select the camera you want to add and its appropriate settings (or accept the defaults) and click the OK button in the bottom right corner.

Once the source has been added to a scene, it becomes the displayed source. Depending on what kind of camera you are using and your intended destination, there may be a disconnect between the input and your output. If this is the case, scale the image as needed so that it fits into your screen.

Similarly, for your pre-recorded clips, select the vids scene and add a Media Source source. Set the source as a local file and select the video clip you want to add.

Adjust the clip to fit the portion of the screen you need it to fill, and continue adding sources.


Sources within a scene are exactly like layers in GIMP or Kdenlive; the top source takes precedence over lower sources, and any source may be made invisible by clicking the eye icon to the source's left.

By clicking and dragging the red bounding box, sources can also be scaled to achieve a picture-in-picture effect.

Text and still images are also acceptable input formats, so standard lower thirds are easy to cobble together. Add text as a Text (Freetype2) source, and add a backdrop for the text created in GIMP. Usually, a PNG file with an alpha channel is best.

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