Questions tagged [recording]

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1 answer
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linux record audio (arecord or similair) and seperate left/right channel

I want to record (line in) from an audio device and seperate the left and right channel each to a different process. or record them seperately of course. what I want is something like that (play ...
0 votes
1 answer
3k views

Setting the default pulseaudio capture source to "monitor" via command-line

I want to do this from commandline: What I've done so far is to create a ~/.asoundrc file with the following contents: pcm.pulse_monitor { type pulse device alsa_output.pci-0000_00_1b.0.analog-...
0 votes
0 answers
53 views

ALSA - USB Interface - How to choose only one channel

I am currently trying to record audio with ALSA and a USB interface. I am using a focusrite scarlett 4i4 3rd gen and a raspberry pi 4b with linux debian bookwarm installed. My question is how do I ...
0 votes
3 answers
1k views

Hardware accelerated lossless recording on a 6700 XT using ffmpeg

I'm trying to record my screen losslessly (or at near lossless quality) with hardware acceleration on a 6700 XT with ffmpeg. I'm running Linux Mint with the 5.14.14-051414-generic kernel. I've tried: ...
3 votes
2 answers
3k views

Cannot record microphone with SimpleScreenRecorder

As mentioned in the title, I'm unable to simultaneously record my headset microphone and my desktop audio when using SimpleScreenRecorder in KDE Neon 5.24. In the "Audio Input" section of ...
5 votes
2 answers
6k views

record screen and internal audio with ffmpeg

What is the ffmpeg command to record screen and internal audio (on Ubuntu 18.04)? I'll omit the many things I tried that did not work and skip to the something close to what I am looking for; V="$(...
9 votes
2 answers
27k views

'Device or resource busy' error thrown when trying to record audio using arecord

I'm trying to record audio that is being played on separate channels using arecord. I do this by executing the following command in separate threads in a python script: arecord -D plug:"+str(in_id)+" ...
7 votes
1 answer
570 views

ffmpeg: record screen area selected by mouse

I have found a ffmpeg command to record area of my screen: ffmpeg -video_size 2000x1600 -framerate 25 -f x11grab -i :0.0+2140,280 output.mp4 But to find the correct area, I had to do multiple trial/...
3 votes
0 answers
714 views

Microphone is detected, but no input from it

I am currently using Pop!_OS version 22.04 LTS. I was trying to get on a Discord call with a friend, but he couldn't hear me. I later discovered that it would detect audio out as the input. I went to ...
-1 votes
2 answers
828 views

Highest Quality Possible in SimpleScreenRecorder

I have installed SimpleScreenRecorder On My Linux Machine but I recorded and Edited Some Videos With it Like This Example But the Recorded Quality is Not Good Enough, Please Tell me Some Settings ...
0 votes
1 answer
246 views

What is a UVC device and how does it work without drivers?

I searched for video recording equipment to use with Linux. Upon searching I find some products that state that they do not come with drivers because it is a UVC device. Assuming that other products ...
43 votes
10 answers
40k views

How can I record the sound output with gtk-recordmydesktop?

I am using gtk-recordmydesktop to record the video output to my desktop. However, the videos have no sound. All the tutorials I found regarding this involved getting sound recorded from a microphone, ...
1 vote
1 answer
1k views

What is "New Virtual Output" in kde screen share (portal) dialog?

In kde wayland when you choose the pipewire source in obs, you get the Desktop Portal dialog that allows you to choose one of your screens or a "Full Workspace". But also there is an option &...
-1 votes
1 answer
373 views

Debian 11 - How to record Google Meeting audio?

I'm having psychoterapy through Google Meet and would like to record the sessions for studying them later. But Google does not allows recording natively except if you are the inviter and pay for a ...
1 vote
0 answers
679 views

ffmpeg; video duration is longer than the actual recording time

I'm using the following command to record the screen with ffmpeg. ffmpeg -nostdin -video_size 720x878 -framerate 24 -f x11grab -i :0.0+720,0 -vf setpts=N/FR/TB -vcodec libx264 -y -loglevel quiet ...
1 vote
1 answer
1k views

Is there a way to record the audio directly from the soundcard (e.g. using ffmpeg)?

I know there it is possible to record sound from the speaker of the computer using command such as: ffmpeg -f avfoundation -i ":0" -t 10 audiocapture.aiff But as the recorded sound is far ...
1 vote
1 answer
4k views

alsa: record everything on given sound card

Is there a simple, application-independent way to record audio on given sound card? Lets say I plug in USB headset, which appears as /dev/snd/foo. I then use zoom or skype or any other application to ...
1 vote
0 answers
121 views

How to avoid audio recording fade in?

Audios recorded from the microphone start with a pop and a fade in. I tried 2 mics from two hardware inputs. I found this solution that describes my problem but Fedora 35 has no default.pa file: In ...
0 votes
1 answer
287 views

Why isn't sox recording anything?

I have an RTL-SDR radio receiver which outputs streaming data to stdout. I can listen to the audio with this command: $ rtl_fm -M wbfm -f 96.5M | play -r 32k -t raw -e s -b 16 -c 1 -V1 - As you can ...
0 votes
1 answer
350 views

ffmpeg recording slows down when audio inputs are added

I'm trying to record my screen, my mic, and my game audio with ffmpeg. This command records only my screen. ffmpeg \ -video_size 2560x1440 \ -framerate 60 \ -f x11grab -i :0 \ -map 0 \ -c:a copy \ -c:...
0 votes
0 answers
102 views

Video is delayed when recording

I need to record my screen. I have tried different recording softwares, but I always have the same issue: the recording of the video is delayed with respect to the audio (so I hear the audio before ...
0 votes
1 answer
5k views

Using and configuring ALSA plugins dmix and dsnoop for stereo play and capture

I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use lines 3-8 for input (mics) and 3-8 for ...
1 vote
0 answers
395 views

ffmpeg how to record a specific window (even when not visible)

I want to record a specific window even when its not visible(another window is above it) using ffmpeg is it possible? if so how?
0 votes
1 answer
2k views

How do I record just the internal audio with ffmpeg?

ffmpeg -f x11grab -s 1920x1080 -i :0.0 -f alsa -i default -c:a aac -c:v libx264 -crf 18 -preset slower ~/Videos/recording-(date +%F-%I-%M).mp4 I'm using this command to record the screen and my ...
16 votes
4 answers
18k views

Can I setup a loopback audio device?

If I can send audio to the output devices, then I can record the same audio as a wave. With filesystems, you can just setup a loopback filesystem and write binary data on a file instead of a device. ...
1 vote
4 answers
25k views

Kali Linux screen recorder

I want kali linux default screen recorder on my Ubuntu but don't know the name since I do not have the kali linux. The unique property which make me fall in love with it was the icon on the top panel ...
0 votes
1 answer
3k views

Change default recording sample rate for "arecord"

I'm attempting to change the default sample rate when recording audio with arecord. Currently, when running arecord test.wav the rate is 8000 Hz: arecord test.wav Recording WAVE 'test.wav' : Unsigned ...
1 vote
1 answer
3k views

Change default sampling input rate for ALSA

I am working on Jasper project on Raspberry pi for voice recognition. The problem is that there is a lot of crackling noise when I record with the default settings. After tinkering with arecord, I ...
0 votes
1 answer
886 views

How can one record mic audio straight to a FLAC file?

Months ago I would occasionally record little snippets of audio as FLAC files using ffmpeg and ALSA. I used a command that looked more or less like this: ffmpeg -f alsa -ar 48000 -ac 1 -acodec flac -...
4 votes
2 answers
3k views

record audio on Linux - capture both sides of a VoIP conversation

I want to use Audacity (or similar) to record audio for podcasting. The podcasts will be interviews conducted via voice-over-IP (SIP) telephone. I came across an excellent tutorial here: http://www....
1 vote
1 answer
213 views

How to use an handheld device with GNU/Linux and YouTube to protect from death threats?

Suppose you fear you could meet someone who will threaten you with death. Assuming the bad guy won't destroy your handheld (for example an Ubuntu Touch device) on sight, a barely decent form of ...
1 vote
1 answer
839 views

Recording from Pulseaudio sink AND source at the same time

I'm trying to record a Google Meet call I'm participating in (audio only). Creating a combined sink from a null sink and my headphones sink, redirecting browser to combined sink and recording null ...
0 votes
1 answer
270 views

How can i use my headset for listening but using laptop built-in microphone to record my voice?

In windows it's very easy. How come in linux there is no solution? I have already tried using hda-jack-retask, but it was updated in 2014 last time and now its 2020 with Ubuntu 20.04 LTS. A lot has ...
0 votes
1 answer
2k views

Alsa capturing mono microphone as right channel of stereo

The laptop microphone is mono but audio seems to get captured as stereo. The resulting recording has the sounds captured by the mic in the right channel and for some reason whatever sound is currently ...
1 vote
0 answers
1k views

Create virtual display output device or new X display for recording fullscreen desktop application

I'd like to create a virtual display which emulates a hardware monitor. For example, I'd like to be able to move application windows to this "monitor", record on the "monitor", etc....
18 votes
1 answer
37k views

Creating a virtual microphone

I run a CentOS Server with VNC enabled and some services require a microphone to work properly, but it doesn't have to be used for recording, just a microphone device available. So I was wondering if ...
1 vote
1 answer
624 views

Lossless ffmpeg recordings with low resource usage

I'm trying to record lossless videos with ffmpeg of My screen My computer audio My microphone audio using this script: MIC="alsa_input.usb-Logitech_Logitech_USB_Headset-00.mono-fallback" ...
0 votes
0 answers
74 views

Is it possible to record radio using headphones?

Disclaimer 1: I'm programmer, not a hardware expert, maybe – I just don't know – is the question completely stupid. Disclaimer 2: I'm not a english native. With my MP3-Player I can record radio (in ...
1 vote
1 answer
1k views

Easiest way to record mic and line in simultaneosly and without pain?

I'm using Arch Linux with alsa, pulseaudio, pavucontrol, jack, and whatever else. I want to record a microphone and a guitar simultaneously no matter how low level I should get. There are several ...
2 votes
0 answers
206 views

How to show keyboard hits while recording with kazam?

Looking to make some demonstrations or tutorials, I am able to record the screen "easily" with kazam. However, even if the mouse pointer is recorded, keyboard shortcuts are not. For some software, ...
0 votes
0 answers
210 views

How do I record video from my MacBook Air's webcam?

I recently installed Linux Mint on my MacBook Air, and I would like to record video from it's built in camera. It seems that the drivers are not installed, since guvcview gives an error when I try to ...
2 votes
0 answers
431 views

Using PulseAudio to pipe audio from multiple applications into separate files in parallel

I would like to redirect the audio output of multiple applications to multiple files in parallel on Ubuntu. For example, if I have two instances of Chrome running in the background at the same time, I ...
2 votes
0 answers
80 views

Program for constantly recording audio of the past 24 hours

I want a program to continuously record the audio of my microphone for the past 24 hours (like a surveillance system) so I can have the audio of the past 24 hours. Is there a progeny for doing this? ...
3 votes
1 answer
922 views

Linux Mint - Glitch in Screen Recording video files

I am new to Linux, and most things seem to work fine; but it is not the case of Screen Recording. I have tried with the following programs: OBS Studio Voko Screen Kazam And I have tried with the ...
1 vote
0 answers
224 views

How to record the lock screen and other users sessions?

After I log in to my Linux session I start recording my screen with the command recordmydesktop --fps 2 --no-sound --on-the-fly-encoding --compress-cache --no-frame --v_quality 10 But when I to go ...
2 votes
0 answers
146 views

Recording screen on openSUSE Tumbleweed leads to black screen

I want to record my screen in openSUSE Tumbleweed, but it always fails. I've tried four recorders (listed below), but my video always results in a black video. The only thing that can be seen is the ...
2 votes
1 answer
92 views

Is there a tool that will let me listen to segments of a single audio file while it is still recording

This project encompasses accomplishing the following goals: Record the professor. Listen to past segments of recording while recording is still adding new segments. I apologise if this is obscure. I'...
3 votes
1 answer
5k views

convert arecord output to flac

I'm trying to convert arecord wav output to flac and it does work in part: pi@raspberrypi /tmp $ arecord -d4 -f dat -t wav -r 48000 -c 2 |flac -f -o message.flac - --channels=1 --sample-rate=16000 ...
4 votes
1 answer
2k views

How to use asciinema offline?

How can I record and play asciinema screen recordings in a LAN without internet connection? The tool uploads the recordings per default to the asciinema website but I want to keep it local and run ...
1 vote
0 answers
492 views

ALSA mono configuration not working

I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use input lines 3, 5, 7 for input (mics) ...