Cinema standard has been 24fps for years. In North America, it's usually 30fps (or 29.97), and in Europe it's usually 25fps. The resolution for a 16:9, 720p video is 1280x720 pixels.įPS (frames per second) is a standard that changes depending on your location. If you need an MP4 for post-editing, in OBS's menu, find File / Remux Recordings, browse and open the MKV file, click on Remux, and it will generate a MP4 file with no decrease in quality. You can also upload MKV directly to YouTube. You have a choice among FLV, MOV, MP4, MKV, and others for Recording Format. MKV is the safest container to use, because if OBS or the operating system crashes, you can recover the recording (up until the crash). With this configuration, expect files to be around 800MB for a 40-minute talk. Keep in mind that a Core i5 CPU is not ultra-powerful. A medium compression produces larger files, but requires less power. In terms of Recording Quality, note that the more you compress your file, the more power you need, but the smaller the output file. The other default options are fine for a Core i5 processor. This is how it will look when it's finished.Ĭhange the audio quality to 192khz at minimum and set your recording path (where you want to save the recording). The first step is to create a mask for the speaker recordings that displays the speaker, the slides, and the conference information on one screen. Now that you have everything plugged in, let's dive into the software with the methods we used at EclipseCon France 2017. Check that the USB sound card is detected.Remove unnecessary USB devices so your USB ports are dedicated to your recording devices.If you aren't live streaming, disable networking.Stable recording needs all of the computer's power. Before starting OBS, close all other applications and dedicate your computer to the recording.Plug all your devices together before starting your recording computer so the system loads drivers during startup and is more stable.Download and install both from their respective websites or repositories/packet managers. This project uses two cross-platform, free and open source software packages: Open Broadcaster Software (OBS) presentation capture software, which is used to do live recordings, and Inkscape vector graphics editor software, which is used to create a mask for OBS with information about the talk, logo, background, and transparent areas for the video inputs. Now it's time to prepare your software to capture video, and part 3 will explain how to record a presentation and troubleshoot anything that goes wrong. Part 1 of this series on recording live presentations covered the equipment you need. Fortunately, this is easy and relatively inexpensive today, thanks to open source software and readily available hardware. If you're part of a team producing live meeting or conferences, chances are you'd like to record speakers' presentations and make them available on the web.
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