Guessed Channel Layout for Input Stream #1.0 : stereoĭuration: N/A, start: 1428348285.225901, bitrate: 1536 kb/s Trailing options were found on the commandline.ĭuration: N/A, start: 1428348285.201679, bitrate: N/A This is despite ffmpeg claims to record the audio with 2 channels, here is the input: ffmpeg version N-71312-ga66dcfe Copyright (c) 2000-2015 the FFmpeg developersīuilt with gcc 4.8.3 (GCC) 20140911 (Red Hat 4.8.3-7) The position of -ac 2 doesn't change the behaviour, nor does repeating it only once. I'm getting a video with 0 audio channels, which I can check running FFmpeg/ffplay output.mpeg Input #0, mpeg, from 'output.mpeg':ĭuration: 00:00:09.44, start: 0.540000, bitrate: 2743 kb/s However, when I try both screen capture and audio, like this: FFmpeg/ffmpeg -video_size 800圆00 -framerate 25 -ac 2 -f x11grab -i :0.0+0,0 -ac 2 -f alsa -i pulse -ac 2 -acodec copy output.mpeg -ac 2 I am able to record audio perfectly fine with the command: FFmpeg/ffmpeg -f alsa -ac 2 -i pulse - output.wav Lastly, set your Profile to Main and Tune to None.I am using ffmpeg built from source at this revision in Fedora 20. Higher-end CPUs should use Medium or Fast, and older processors should work best with the Very fast or Superfast preset. Your CPU Usage Preset should be set to how new and fast your processor is running. Below, set the Keyframe Interval to 2 seconds. A higher bitrate will use more available storage, so keep that in mind. I suggest trying out a few values around 10’000 to see what works best for you. When recording in 720p, a bitrate of 3 or 4 thousand can suffice, depending on which content you intend to record. A bitrate of 20’000, which will require about 20MB per recorded second, is more than enough to record my screen in this setting. In my example, I am recording in 2k resolution and 60FPS. Video games, for example, require a higher bitrate as there is more overall movement on your screen. This will also depend on which type of content you are recording. If you’re recording your screen in 1080p, then a bitrate of 10000 should be enough. Below, make sure to use a decent bitrate to get enough detail in your video. Set the Rate Control to CBR, which stands for constant bitrate. If you’re using an abnormal native screen resolution as I am, then make sure not to change your output resolution here, as we will be able to change it later. Using it will then be favorable, but for most users, make sure to set this to x264.īelow, you have the option to rescale your video output. If you have access to a dedicated graphics card, it will appear in this list. The Encoder option should be set to x264, as this will result in the best OBS performance for most Mac users. This is the best video format for most users, as it won’t require much storage space for the quality, and it will allow you to edit the video using most applications and upload it to most websites. I like to select my desktop, and it will be in your videos or movies folder by default. In the Recording section of your Output settings, set the Type to Standard, and below, you can change the recording path if you want. This will give you access to some additional settings. Here, navigate to the Output tab and set the Output Mode option to Advanced. After this initial setup, you should look at your OBS settings to ensure that your screen recordings look the best without causing lag or low performance on your device.
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