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pulseaudio - How to capture desktop sounds (Pulse …
https://askubuntu.com/questions/291910/how-to-capture-desktop-sounds-pulse-audio-output-from-avconv
-f: Force input or output file format.-i: input file name. To record from ALSA we need the format to be alsa, and the input depends on the device we record (usually this will be the defualt device). Then your command should be as follows: avconv -f alsa -i default record.wav
sound - Splitting audio channels using pulseaudio - Ask …
https://askubuntu.com/questions/277260/splitting-audio-channels-using-pulseaudio
Splitting audio channels using pulseaudio. Bookmark this question. Show activity on this post. My mission is record desktop using avconv (ffmpeg) + record microphone input + use sphinx program which also need the same microphone for voice control. Now, the problem is that if I start sphinx first, then I can't start avconv (because microphone ...
Record desktop and microphone audio with Avconv | Newbedev
https://newbedev.com/record-desktop-and-microphone-audio-with-avconv
Install Pulse Audio Control. sudo apt-get install pavucontrol Only playback record (no microphone) Open it → Input Devices → Show: All input devices → Use Green Button to the right to Select "Monitor: Analog Audio" There are different channel names but You can run some player and see which has signal.
avconv - How to capture screen and audio input and push …
https://stackoverflow.com/questions/35826867/how-to-capture-screen-and-audio-input-and-push-to-rtmp-server
Secondly, let's take apart the two commands that you have found: -f alsa - format for the input is alsa. -i pulse - you are reading pulse (the pulseaudio driver) -f x11grab - planning to read from the screen on x11. -r 25 -s 1280x720 - rate and size of the incoming video stream.
how to use avconv to record streaming audio (how to define ...
https://unix.stackexchange.com/questions/88139/how-to-use-avconv-to-record-streaming-audio-how-to-define-sources
Below are the two that I need to define as inputs to avconv. alsa_output.usb-Focusrite_Scarlett_2i2_USB-00-USB.analog-stereo.monitor/#2: Monitor of Scarlett 2i2 USB Analog Stereo alsa_input.usb-Focusrite_Scarlett_2i2_USB-00 …
Converting video/audio using avconv - ROXLU
https://www.roxlu.com/2013/002/converting-video-audio-using-avconv
The general usage of avconv is: $avconv [global_options] [input options] -i [some_inputfile] [output_options] [output file]. Convert from raw x264 to quicktime mov: ./avconv -i test_input.264 -vcodec copy output.mov. Convert from raw x264 to flv …
Snippets/avconv - Libav
https://wiki.libav.org/Snippets/avconv
avconv. Thanks to roxlu for providing most of them. Convert from raw x264 to flv (when you get an error with monotonically increasing dts) avconv -i test_input.264 -c:v copy output.flv. Convert from flv to mov and specify bitrate. avconv -i test_input.flv -b 512k output.mov. Extract audio from movie. avconv -i test_input.mp4 -c:a copy -vn -y out.aac
Libav documentation : avconv
https://www.libav.org/avconv.html
File access protocol. Allow to read from or read to a file. For example to read from a file ‘ input.mpeg ’ with avconv use the command: avconv -i file:input.mpeg output.mpeg. The av* tools default to the file protocol, that is a resource specified with the name "FILE.mpeg" is interpreted as the URL "file:FILE.mpeg".
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