![]() You'll probably see some warnings: Frame rate very high for a muxer not efficiently supporting it. ![]() If recording screen with no other options like this: ffmpeg -f avfoundation -i "1" out.mov I guess most of the time we'll ignore the program warnings, but not this one. UPDATE: I've tried this on an older OS (Yosemite) and got the same results (thought it might be the new OS that broke it). It just says "The document could not be opened". If someone can solve that riddle, my next question is how can I watch the newly created file in quicktime (I'm thinking I'll need to encode or decode or something) because even the FaceTime video file would not open in QuickTime. I've tried this same command but using device 0 (FaceTime camera) and it stops after 5 seconds. Ctl-C doesn't work either, and I am left with force quitting via Activity Monitor. In fact, I can't even stop the recording as it suggests by pressing 'q'. It creates an mov file in the working directory but doesn't stop after 5 seconds. ![]() I don't need audio so I start my 5 second screen recording via: ffmpeg -f avfoundation -t '5' -i '1' test.mov Which returns: AVFoundation video devices: I list my devices via: ffmpeg -f avfoundation -list_devices true -i "" I'm on a Mac with MacOS Sierra installed.
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