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Questions tagged [recording]

The tag has no usage guidance.

0
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0answers
4 views

MediaRecorder: Audio becomes very fast after start again and again

I have used MediaRecorder in one of my project, in starting questions recording is working fine. But after done recording for 4-5 questions, it become very fast on each recording and voice is totally ...
0
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0answers
18 views

Solus - Fails to record my screen properly (It records but statically)

When I start to record my screen (using both OBS and SimpleScreenRecorder), it only records the initial screen when I start the recording and it only records the pointer movement and its changes. It ...
2
votes
1answer
73 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'...
1
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1answer
35 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
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0answers
66 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) ...
0
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1answer
100 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 ...
0
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0answers
84 views

FFmpeg fails to record full screen on Linux(Devuan derivative)

Using FFmpeg on Devuan derivative: I have been struggling to record desktop with ffmpeg, below are my attempts so far. Script 1 ffmpeg -f x11grab -i :0.0 -vcodec libx264 -pix_fmt yuv420p -loglevel ...
3
votes
1answer
413 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="$(...
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0answers
151 views

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 ...
1
vote
1answer
340 views

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

Im 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 ...
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0answers
3k views

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 ...
1
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1answer
367 views

X Window / VNC session recording

While I am aware of rfbproxy and ffmpeg's x11grab capability, all the examples online seem to be aimed at users wanting to record their own sessions. My usage model is to maintain a (reasonably) ...
2
votes
1answer
148 views

What are several different and alternative methods to backup the audio levels in linux?

The audio recording levels can be saved for Ubuntu / Debian users using a command from the package alsa-mixer, alsactl --file ~/filename store However I am looking for alternative ways to save and ...
1
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0answers
652 views

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 ...
1
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0answers
385 views

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 ...
0
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1answer
44 views

Growisofs renaming files

I was trying to copy several files to a dvd with growisofs. The command I use it is: growisofs -Z /dev/dvd -R -J /media/34GB/tmp/ But when I send it to command line, I receive this message I: -...
1
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0answers
23 views

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 ...
5
votes
1answer
11k 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)+" ...
0
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0answers
63 views

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....
2
votes
1answer
95 views

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
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4answers
401 views

Record keystrokes through ssh and be able to replay them

I've been working on a small script today for our minimal server here where I can log into our inventory software, download the csv and put it into the web directory using a cron job periodically. ...
0
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4answers
8k 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
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0answers
438 views

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 ...
1
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0answers
590 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
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1answer
807 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 ...
8
votes
1answer
2k views

Programmatically redirect audio output of specific program to file

I would like to redirect the audio output of a program to file, on the command line, like in $ redirect-wrapper file.wav my-program so that I don't hear the output of the program, i.e. the output ...
1
vote
1answer
776 views

Understanding scriptreplay timing file

I am trying to understand the timing files produced by the script command (which are supposed to be read by scriptreplay while running typescript files). The timing file is always made of two columns, ...
0
votes
1answer
1k 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
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0answers
104 views

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 ...
1
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0answers
549 views

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 ...
0
votes
2answers
829 views

Execute command inside another command

I'm trying to record my tmux session. I've got an alias record-session which executes command from ttygif ttyrec ~/ttygif/files/last-session. As far as I understand ttygif starts new terminal instance ...
1
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0answers
77 views

“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 ...
2
votes
1answer
494 views

Record/Capture desktop for specific time period

I use gtk-recordmydesktop and/or recordmydesktop to record my desktop and create screen-casts. I need to record my desktop for a given period of time, let's say 1 hour, so that I can record stuff ...
1
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0answers
709 views

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. ...
2
votes
0answers
191 views

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 ...
2
votes
1answer
11k views

Issues with arecord command: Channels count non available

I'm having some mixed results with the arecord command in the terminal. The hardware I'm using consists of the Cirrus Audio Card for the Raspberry Pi. I'm trying to record a 24-bit 192kHz sound (from ...
1
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1answer
193 views

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 ...
0
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0answers
3k views

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 (...
2
votes
3answers
100 views

Cannot remember the name of a CLI recorder software

I stumbled across a useful command line recorder that allows the user to copy the text when watching the 'recording'. I just cannot remember the name of the project. I just remember you can play and ...
2
votes
0answers
377 views

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, ...
1
vote
1answer
455 views

What is preventing me from recording the output of my speakers?

I am using Trisquel GNU/Linux 6.0.1 (a modified version of Ubuntu) on the XFCE desktop environment. I am trying to record the output of my speakers. I do not have a microphone, and so cannot use it ...
4
votes
1answer
1k views

How to record Skype calls (audio) on Debian 6?

I conduct business over Skype. Sometimes when I talk to clients they give a lot of instructions real quick. It would be nice to have a way to record conversations so that I could listen to them at a ...
2
votes
1answer
1k views

Record from the microphone indefinitely

I'm working with the application "arecord" (under Arch Linux). I'm want to capture sound from my microphone and save it to the disk. This is my command: arecord -f dat -d 2 --channels 1 -D hw:1,0 /...
13
votes
1answer
10k 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 ...
3
votes
1answer
3k views

Record audio from multiple devices with ALSA and Pulseaudio

I want to record audio from multiple input devices using ALSA and Pulseaudio. More precisely, I want to play UltraStar Deluxe. It is a game using SDL. As far as I can tell, it supports ALSA only. ...
8
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5answers
11k views

recording audio from web-based audio player using ALSA loop device

I am trying to save voicemail messages from Verizon Fios phone in best quality possible. The voicemail messages are available online, but for playing only (Java based player), no saving. Officially, ...
4
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1answer
2k views

What is the modern equivalent of reading `/dev/audio`?

Recently my trusty home PC died after 10 years. The ensuing upgrade (from SuSE 10 to OpenSuSE 12.3) was something of a culture shock for me - none of the convenient shortcuts and utilities I had ...
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0answers
688 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 ...
0
votes
1answer
794 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 ...
0
votes
1answer
2k views

Alsaaudio module, recording for specific amount of time

The below code records the audio for some time (I don't know how much) How to calculate the total time of its recording? For example, if I want to record for just one minute then how would I limit ...