Questions tagged [recording]
The recording tag has no usage guidance.
40
questions with no upvoted or accepted answers
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answers
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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 ...
3
votes
0
answers
842
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Linux sound: play back audio from input only on specific output device
I currently have a shairport (AirPlay) server which receives audio data and outputs it over optical SP/DIF (Toslink) via a USB-to-Toslink adapter.
This digital signal goes through an equalizer, and ...
- 364
2
votes
0
answers
228
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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, ...
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2
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0
answers
450
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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
93
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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?
...
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2
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0
answers
151
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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 ...
- 129
2
votes
1
answer
281
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Creating a timelapse with guvcview
Is there a way to create a timelapse video (or similar) with guvcview?
I'm using an external (USB) camera and ordinary footage seems to very quickly fill a hard drive.
Can I get it to record an ...
- 1,302
2
votes
0
answers
236
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Record video from camera and get frame number on demand
I'm using avconv at the moment to store the input of my camera as an video. This works fine. Now i'm asking myself if it is possible to get the current frame number at a particular time of the video ...
- 121
2
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0
answers
562
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Capture timestamped X mouse events, and render a video with custom mouse pointer?
I am typically using recordmydesktop to record some application interaction; however, on my system, recordmydesktop always shows the same mouse pointer/cursor (the arrow) - regardless if, in reality, ...
- 6,878
2
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Record Minecraft with recordmydesktop on Linux Mint 12 64bit
With Ubuntu 11.04 or 11.10 I was able to record Minecraft video with the following command:
recordmydesktop --windowid $(xdotool selectwindow) --no-cursor --full-shots --fps 25 --no-wm-check --no-...
- 52.1k
1
vote
1
answer
2k
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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 &...
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1
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0
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803
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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 ...
- 11
1
vote
0
answers
130
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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 ...
- 346
1
vote
0
answers
461
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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?
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....
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1
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0
answers
236
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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 ...
- 851
1
vote
0
answers
499
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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) ...
- 761
1
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0
answers
5k
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ffmpeg "moov atom not found" when merging MP4 & MKV
I am trying to merge an MP4 file (which contains only video), with a MKV file (which contains only audio). I am using this command:
ffmpeg -i video.mp4 -i audio.mkv -c copy output.mp4
But I am ...
- 175
1
vote
0
answers
2k
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Capturing remote VNC to x264 without storing first
I'm looking for a way to capture a remote VNC display into a local h.264 recording without having to record first in another format and then convert it after the fact. I'd see that it's is possible to ...
- 111
1
vote
0
answers
843
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Uploading a webcam stream via ftp in realtime
So here's the situation. I'm trying to build a watching program for my linux box with an inbuilt webcam, that starts recording when motion is detected, and uploads the recording to my domain.
Motion ...
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1
vote
0
answers
33
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streamer not recording audio
I am trying to record a video from my webcam with streamer, this is my command:
streamer -t 1:0:0 -c /dev/video0 -f rgb24 -r 5 -o outfile.avi
Unfortunately this is not recording any audio, which ...
- 991
1
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answers
158
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recordMyDesktop can't use jackd for audio
If I try to have recordMyDesktop (technically qt-recordMyDesktop) capture audio via jackd, when I hit record it immediately stops with the message:
recordMyDesktop has exited with status: 4352
...
- 3,415
1
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0
answers
147
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"Replay" feature (repeat / rewind)
This occurred to me playing some games where there is no live rewind feature.
Basically what I'm looking for is an application which records the screen, and - when pressing a shortcut - rewinds what ...
- 201
1
vote
0
answers
1k
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Treat USB Sound card mic input as line input
I have a Creative Labs Sounds Blaster Play (SB1140) USB Sound card. When I plug it into either a Windows or Mac computer, I am able to record line level audio through the Mic jack - clean and clear.
...
- 111
1
vote
1
answer
215
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Is there any app that records notes with synchronized Audio?
Is there any application that it records audio and you take notes. After recording you can play the audio that was recorded when a specific text was written. There are apps that does this for other OS ...
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1
vote
0
answers
893
views
Pulseaudio doesn't record sound
Pulseaudio fails to record any sound, even though the sound configuration
applications (both KDE and Gnome) correctly show the input level as I speak
something.
I am using the microphone built into ...
- 5,937
1
vote
1
answer
1k
views
Opening ALSA Microphone in two programs?
I'm using a raspberry pi to capture some audio, but I only want it to do it when the noise level goes above a certain level, and then the device will record until two seconds after it falls below that ...
- 11
0
votes
1
answer
119
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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 ...
- 111
0
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0
answers
95
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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 ...
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0
votes
1
answer
391
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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 ...
0
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0
answers
110
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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 ...
- 119
0
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1
answer
288
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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
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0
answers
81
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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 ...
- 111
0
votes
1
answer
3k
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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-...
- 1,100
0
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0
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215
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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 ...
- 235
0
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0
answers
476
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record audio on Linux - stop generating output automatically
I am using pulseaudio, but I don't really understand it.
I am recording the audio stream from a video playing in my browser. If I use module-combine-sink, I can record the monitor stream as well as ...
- 161
0
votes
0
answers
103
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Why does Debian records in 1080p and Ubuntu record in 720p
Last year I was using Debian Jessie 8 as my main linux os and I used to record my screen with Record My Desktop the resolution of the video rendered as 1080p but recently I have switched to Ubuntu 16....
- 1,081
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0
answers
1k
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Mic records sound twice as fast
I've a webcam with a built-in microphone. When I record sound with eg. arecord, it says I've recorded eg. 6 seconds of sound, but when I try to play it with eg. aplay, it says I've only recorded 3 ...
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0
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4k
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How to record video from an old webcam using ffmpeg on Linux?
After couple of hours I'm finally ready to accept my absolute lack of knowledge in that topic and decided to post this question here.
I've been trying to record video from an old external USB webcam (...
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0
votes
1
answer
2k
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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 ...
- 130