The primary thing to add to your ffmpeg command line is another DirectShow input: Recording from 2 simultaneous audio inputs is possible with : ' -filter_complex amix=inputs=2' (See further below in this article for colon ' :' syntax with use of not GDIgrab but 'screen-capture-recorder').)Īlso, I managed to combine audio from two sources - make sure the value given/assigned to 'amix=inputs=' is not '1' (Particularly, in this case, that value is '2'). It is possible to record audio input (stream(s)) simultaneously to accompany the video (raster/pixel data from the display/Desktop):įfmpeg.exe -f gdigrab -i desktop -framerate 15 -f dshow -i audio='Headset Microphone (Logitech US' -filter_complex amix=inputs=1 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -vsync vfr -acodec pcm_s16le new-output-video-file.mkvīut, in my experience, this created a lag (latency mis-synchronisation between audio and video content/streams, in which the video lagged behind the audio) (upon playback). window (task) ' title' (the text in the Title bar of a window that is running within/on your Desktop).Read about more options provided by ffmpeg.exe using GDIgrab:

It captures entire Desktop display output, anyway. '-video_size' doesn't seem to work for me. is an acronym that stands for 'Microsoft Windows graphics device interface'įfmpeg.exe -f gdigrab -i desktop -framerate 15 -video_size 1100x800 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast new-output-video-file.mkv One possible means of input (doesn't use dshow but instead) is ' gdigrab'

To (query, and (get a)) list what devices are available to ffmpeg.exe as input and output. ffmpeg for Windows daily/nightly buildsįfmpeg for Windows can access Direct Show multi-media (audio and video) devices.įfmpeg -list_devices true -f dshow -i dummy BSDs or GNU/Linux) (or even Apple's Mac OS X) ,ĭownload a free windows build (compiled version that can run under Windows) from Zeranoe ( NT-based), as opposed to a Unix or unix-like flavour OS distribution (e.g.

Linux ffmpeg capture audio