Questions tagged [recording]
The recording tag has no summary.
101 questions
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Why must I use scale_vaapi with kmsgrab, but hwupload with x11grab when using vaapi with ffmpeg?
I am wondering why, when using vaapi with ffmpeg, if I use x11grab I must use -vf format=nv12,hwupload but with kmsgrab I must use -vf scale_vaapi=format=nv12 instead.
In particular I want to know 2 ...
- 2,562
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1
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Can ffmpeg record screen on wayland?
Is it possible to record the screen with ffmpeg on wayland using the Hyprland compositor?
I've read some posts that imply people managed to do it with kmsgrab, but cannot figure out how to do it ...
- 2,562
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1
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412
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linux record audio (arecord or similair) and separate left/right channel
I want to record (line in) from an audio device and separate the left and right channel each to a different process, or record them separately of course.
What I want is something like that (play ...
- 111
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1k
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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/...
- 758
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1
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614
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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 ...
1
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1
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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 &...
- 1,209
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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 ...
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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 ...
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966
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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
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1
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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 ...
- 495
6
votes
2
answers
4k
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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 ...
1
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2
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8k
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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 ...
- 758
1
vote
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answers
151
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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 ...
- 358
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1
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439
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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 ...
- 239
0
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1
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395
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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:...
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