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-1
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0answers
30 views

FFmpeg - Delete unwanted section on video without re-encoding?

Using ffmpeg to copy (extract) part of video without re-encoding audio/video, this is what I did: ffmpeg -i video-in -vcodec copy -acodec copy -ss 00:10:00 -t 00:02:30 video-out How to ...
1
vote
1answer
17 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
vote
0answers
54 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. ...
1
vote
0answers
33 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 ...
1
vote
1answer
379 views

Issues with arecord command

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
vote
1answer
47 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
votes
0answers
383 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
58 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
84 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
87 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 ...
1
vote
1answer
422 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 ...
1
vote
0answers
301 views

Record from the microphone indefinitely

I'm working with the application "arecord" (under Arch-Linux). I'm want to capture sounds from my microphone and save it to the disk. This is my command: arecord -f dat -d 2 --channels 1 -D hw:1,0 ...
10
votes
1answer
1k 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
653 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. ...
5
votes
5answers
2k 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, ...
3
votes
1answer
280 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 ...
1
vote
0answers
241 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
94 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
32 views

How exactly is a Linux desktop/device/display expressed in a terminal?

My plan is to use vpxenc (video encoder) and flac (audio encoder) to record the screen/microphone, but I'm stopped short of entering the input (file) in the command line. How can I exactly address a ...
0
votes
1answer
805 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 ...
1
vote
1answer
1k views

audio recording - record two sources simultaneously, merge into a single 2-track recording

How can I record two audio sources at the same time and create a file where one source is the left channel and the other source is the right channel of a lossless stereo audio recording? My distro ...
2
votes
1answer
951 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: ...
3
votes
2answers
2k views

Using FFMPEG to stream to Twitch.tv with desktop audio?

I've been trying for the last hour or so to stream to Twitch.tv with desktop audio in the stream. Currently, I'm able to use this to get a video to display on Twitch: #! /bin/bash INRES="1280x800" ...
5
votes
2answers
446 views

Can I query which processes (if any) are currently accessing the microphone?

I'm running Debian (technically Raspbian), trying to get a Star-Trek style voice-command system. I've got it mostly up and running, but in the interests of privacy and all that jazz, I don't want my ...
0
votes
0answers
196 views

Fedora17 record screencast doesn't work

I can't start embedded GNOME screencast recorder in F17. I tried to start it using Shift+Ctrl+Alt+R but nothing happened (I can't see any red icon and there isn't any file in my video folder). Could ...
2
votes
1answer
2k 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 ...
2
votes
1answer
221 views

How to record a flash movie from a live cam on the Internet?

I am watching some webcams live from the Internet, showing some big cities around the world. I'd like to record some to show to my friends at home. Is it possible?
5
votes
1answer
646 views

Commands for Auditing Installed Software

Similar to the question here, http://serverfault.com/questions/387111/inventory-or-audit-installed-linux-software, I would like to obtain ideas about commands that should be ran across various ...
6
votes
2answers
806 views

How to encode huge FLAC files into MP3 and other files like AAC?

My problem is very long recordings, longer than supported by WAV. I'm talking about continuous recordings of around eight hours in length. Now, I do most of my recording using sox into FLAC, which ...
1
vote
0answers
437 views

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 ...
3
votes
2answers
2k views

Recording audio output

I've been following these instructions for recording the output of a program I wrote (that uses rtaudio to synthesize music) ...
4
votes
3answers
7k views

amixer - How to change recording channel?

So fat, I am setting up microphone settings : $ amixer set 'Rear Mic' 90% mute cap $ amixer set 'Rear Mic Boost' 80% But, after some sys. update, my default recoding chanell changed to 'Front Mic' ...
3
votes
1answer
2k views

How to get recordmydesktop to record application's audio on Debian/Squeeze?

I'm on an amd64 Debian/Squeeze install on an Intel DX58SO motherboard. I want to use recordmydesktop to record application's audiovisual output. It's important any audio generated by the ...
11
votes
2answers
4k views

How to record my full screen with audio?

If I want to record my desktop, I use: ffmpeg -f x11grab -s `xdpyinfo | grep -i dimensions: | sed 's/[^0-9]*pixels.*(.*).*//' | sed 's/[^0-9x]*//'` -r 25 -i :0.0 -sameq valami.avi But it doesn't ...
16
votes
2answers
11k views

How to get the output inside `screen` out to a script?

I have a screen instance running, and I would need to execute some code inside the screen, and get the result out to my script. The first part is quite easy, I just screen -S session_name -X eval ...
12
votes
4answers
5k 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. ...
20
votes
4answers
23k views

How to record Skype video calls on Linux?

I'd like to conduct recorded video interviews with Skype and am looking for a reliable tool to accomplish that. Is there anything out there that's not slow or buggy? I'm running (K)Ubuntu.
7
votes
5answers
8k views

Is there a CD/DVD disk reading test tool for Linux?

When I was using DOS and Windows I've seen quite a selection of tools to check optical disks for readability and benchmark an optical drive itself. Most of them were even visualising the results in ...
24
votes
3answers
19k 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, ...
5
votes
1answer
728 views

What is the best tool/tools to record video from webcam on linux?

My webcam is detected correctly (and i can use it in skype without any issues), but how can i record video on linux preferably with gui tool ?
4
votes
2answers
442 views

Audio recording does not work — how to diagnose?

I used KRec to record some audio, but when I played it back I got nothing. What are the things I need to do to figure out where the problem is? My computer is a Dell OptiPlex DX620, Intel Pentium 4 ...