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geenloop/macFFmpeg.md

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Created September 19, 2019 08:52
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Mac webcam FFmpeg
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macFFmpeg.md

#Capture and stream a webcam To capture using the iSight camera on a Mac, or infact any other webcam connected to the Mac, we can use FFmpeg. First get a list of the devices installed.

ffmpeg -f avfoundation -list_devices true -i ""

This will list the aviable video and audio devices.

The below will capture at 30fps and the set video size to a file. fmpeg -f avfoundation -framerate 30 -video_size 640x480 -i "0:none" out.avi

The -i 0:none will select the 0 indexed video source and no audio.

We can stream this to the network with

ffmpeg -f avfoundation -framerate 30 -video_size 640x480 -i "0:none" -vcodec libx264 -preset ultrafast -tune zerolatency -pix_fmt yuv422p -f mpegts udp://localhost:12345

This can be viewed using VLC or OpenCV, although there maybe a significant lactancy in the stream

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