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import av
av.logging.set_level(av.logging.VERBOSE)
"""
This is written for MacOS. Other platforms will need a different file, format pair.
You may need to change the file "1". Use this command to list all devices:
ffmpeg -f avfoundation -list_devices true -i ""
"""
input_ = av.open("1", format="avfoundation")
output = av.open("out.mkv", "w")
# Prefer x264, but use Apple hardware if not available.
try:
encoder = av.Codec("libx264", "w").name
except av.FFmpegError:
encoder = "h264_videotoolbox"
output_stream = output.add_stream(encoder, rate=30)
output_stream.width = input_.streams.video[0].width
output_stream.height = input_.streams.video[0].height
output_stream.pix_fmt = "yuv420p"
try:
while True:
try:
for frame in input_.decode(video=0):
packet = output_stream.encode(frame)
output.mux(packet)
except av.BlockingIOError:
pass
except KeyboardInterrupt:
print("Recording stopped by user")
packet = output_stream.encode(None)
output.mux(packet)
input_.close()
output.close()
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