2019-07-26 09:28:05 +00:00
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# Convert
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# MKV to WebM
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~~~
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$ ffmpeg -i input.mkv -c:v libvpx -qmin 0 -qmax 50 -crf 10 -b:v 2M -c:a libvorbis output.webm
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~~~
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2017-11-30 09:40:43 +00:00
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# Recording Screen
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## Within a specified zone
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```
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avconv -threads auto -f pulse -i bluez_sink.0C_E0_E4_81_2F_C1.monitor -ac 2 -f pulse -i alsa_input.usb-BLUE_MICROPHONE_Blue_Snowball_201306-00-Snowball.analog-mono -ac 1 -f x11grab -show_region 1 -s 1024x768 -i :0.0+112,111 -c:v libvpx -pre:v libvpx-720p -vsync cfr -r 15 -c:a libvorbis -q:a 6 -filter_complex amix=inputs=2 output.webm
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```
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With sound from microphone and monitor of input.
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