[opensuse] recording flash audio output with pulseaudio
Hello: I want to record flash audio output on my hard disk as wave file. Up to now I have done by running the command pacat --record -d alsa_output.pci-0000_00_1b.0.analog-stereo.monitor | sox -t raw -r 44100 -s -L -b 16 -c 2 - "output.wav This records not only the flash output but every sound sent to the speakers including desktop effect sounds etc. It is also sensible to the volume, that is the recorded sound's volume depends on the volume sent to the speakers. Because of this I can't change the speaker output volume when recording. Fortunately I found a solution: https://en.opensuse.org/User:Gnyers/RecordFlashAudioOutput This gives instructions how to record the flash audio only: 1. Create a virtual stream For a clean recording without any "contamination" from other audio sources create a dedicated virtual stream $ pactl load-module module-null-sink sink_name=FlashPlugin 2. Find out the Sink index of the Flash audio output. Look for the 'plugin-container' binary $ pacmd list-sink-inputs | egrep 'index:|sink:|application.process.binary' index: 0 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "plugin-container" index: 503 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "mplayer" In this case: INDEX=0 3. Move the audio output of the Flash plug-in to "FlashPlugin", the dedicated stream. pactl move-sink-input $INDEX FlashPlugin 4. Record the "FlashPlugin" sink uncompressed wav: parec -d FlashPlugin.monitor --file-format flash-audio-output-capture.wav This works well, but when I apply the 3rd command (pactl move-sink-input) the sound is redirected and can't be heard on the speakers, I can not monitor what I record. How could I record and monitor the recorded sound simoultaneously? Another question: how can I move the audio output back to the speakers? The instruction doesn't say it. Thanks, Istvan -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 16/09/14 02:08, Istvan Gabor wrote:
Hello:
I want to record flash audio output on my hard disk as wave file.
Up to now I have done by running the command
pacat --record -d alsa_output.pci-0000_00_1b.0.analog-stereo.monitor | sox -t raw -r 44100 -s -L -b 16 -c 2 - "output.wav
This records not only the flash output but every sound sent to the speakers including desktop effect sounds etc. It is also sensible to the volume, that is the recorded sound's volume depends on the volume sent to the speakers. Because of this I can't change the speaker output volume when recording.
Fortunately I found a solution:
https://en.opensuse.org/User:Gnyers/RecordFlashAudioOutput
This gives instructions how to record the flash audio only:
1. Create a virtual stream For a clean recording without any "contamination" from other audio sources create a dedicated virtual stream $ pactl load-module module-null-sink sink_name=FlashPlugin
2. Find out the Sink index of the Flash audio output. Look for the 'plugin-container' binary $ pacmd list-sink-inputs | egrep 'index:|sink:|application.process.binary' index: 0 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "plugin-container" index: 503 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "mplayer" In this case: INDEX=0
3. Move the audio output of the Flash plug-in to "FlashPlugin", the dedicated stream. pactl move-sink-input $INDEX FlashPlugin
4. Record the "FlashPlugin" sink uncompressed wav: parec -d FlashPlugin.monitor --file-format flash-audio-output-capture.wav
This works well, but when I apply the 3rd command (pactl move-sink-input) the sound is redirected and can't be heard on the speakers, I can not monitor what I record.
How could I record and monitor the recorded sound simoultaneously?
Another question: how can I move the audio output back to the speakers? The instruction doesn't say it.
Thanks,
Istvan
Do you have pavucontrol installed? BC -- Using openSUSE 13.1, KDE 4.14.0 & kernel 3.16.2-1 on a system with- AMD FX 8-core 3.6/4.2GHz processor 16GB PC14900/1866MHz Quad Channel RAM Gigabyte AMD3+ m/board; Gigabyte nVidia GTX660 GPU -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
Basil Chupin írta:
On 16/09/14 02:08, Istvan Gabor wrote:
Hello:
I want to record flash audio output on my hard disk as wave file.
Up to now I have done by running the command
pacat --record -d alsa_output.pci-0000_00_1b.0.analog-stereo.monitor | sox -t raw -r 44100 -s -L -b 16 -c 2 - "output.wav
This records not only the flash output but every sound sent to the speakers including desktop effect sounds etc. It is also sensible to the volume, that is the recorded sound's volume depends on the volume sent to the speakers. Because of this I can't change the speaker output volume when recording.
Fortunately I found a solution:
https://en.opensuse.org/User:Gnyers/RecordFlashAudioOutput
This gives instructions how to record the flash audio only:
1. Create a virtual stream For a clean recording without any "contamination" from other audio sources create a dedicated virtual stream $ pactl load-module module-null-sink sink_name=FlashPlugin
2. Find out the Sink index of the Flash audio output. Look for the 'plugin-container' binary $ pacmd list-sink-inputs | egrep 'index:|sink:|application.process.binary' index: 0 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "plugin-container" index: 503 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "mplayer" In this case: INDEX=0
3. Move the audio output of the Flash plug-in to "FlashPlugin", the dedicated stream. pactl move-sink-input $INDEX FlashPlugin
4. Record the "FlashPlugin" sink uncompressed wav: parec -d FlashPlugin.monitor --file-format flash-audio-output-capture.wav
This works well, but when I apply the 3rd command (pactl move-sink-input) the sound is redirected and can't be heard on the speakers, I can not monitor what I record.
How could I record and monitor the recorded sound simoultaneously?
Another question: how can I move the audio output back to the speakers? The instruction doesn't say it.
Thanks,
Istvan
Do you have pavucontrol installed?
Basil, I have puvucontrol and I (try to) use it. But I could not find how to do what I want with pavucontrol. Even setting the output volume is problematic. For example even if I move the sliders the change is not reflected below in the output level indicator . I tried to get information from pulseaudio documentation (man pages) but it is a kind of incomplete. The pulseaudio web-page and wiki is even worse. For example if I use the command:
pactl list short sinks
0 alsa_output.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2ch 44100Hz RUNNING 1 FlashPlugin module-null-sink.c s16le 2ch 44100Hz IDLE Where can I find the meaning of the different columns? I could not find it in the pulseaudio man poages (man pulseaudio, man pactl)? Is there somewhere a detailed howto, manual or other doc for pulseaudio? Thanks, Istvan -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
On 16/09/14 21:21, Istvan Gabor wrote:
Basil Chupin írta:
On 16/09/14 02:08, Istvan Gabor wrote:
Hello:
I want to record flash audio output on my hard disk as wave file.
Up to now I have done by running the command
pacat --record -d alsa_output.pci-0000_00_1b.0.analog-stereo.monitor | sox -t raw -r 44100 -s -L -b 16 -c 2 - "output.wav
This records not only the flash output but every sound sent to the speakers including desktop effect sounds etc. It is also sensible to the volume, that is the recorded sound's volume depends on the volume sent to the speakers. Because of this I can't change the speaker output volume when recording.
Fortunately I found a solution:
https://en.opensuse.org/User:Gnyers/RecordFlashAudioOutput
This gives instructions how to record the flash audio only:
1. Create a virtual stream For a clean recording without any "contamination" from other audio sources create a dedicated virtual stream $ pactl load-module module-null-sink sink_name=FlashPlugin
2. Find out the Sink index of the Flash audio output. Look for the 'plugin-container' binary $ pacmd list-sink-inputs | egrep 'index:|sink:|application.process.binary' index: 0 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "plugin-container" index: 503 sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo> application.process.binary = "mplayer" In this case: INDEX=0
3. Move the audio output of the Flash plug-in to "FlashPlugin", the dedicated stream. pactl move-sink-input $INDEX FlashPlugin
4. Record the "FlashPlugin" sink uncompressed wav: parec -d FlashPlugin.monitor --file-format flash-audio-output-capture.wav
This works well, but when I apply the 3rd command (pactl move-sink-input) the sound is redirected and can't be heard on the speakers, I can not monitor what I record.
How could I record and monitor the recorded sound simoultaneously?
Another question: how can I move the audio output back to the speakers? The instruction doesn't say it.
Thanks,
Istvan Do you have pavucontrol installed?
Basil,
I have puvucontrol and I (try to) use it. But I could not find how to do what I want with pavucontrol. Even setting the output volume is problematic. For example even if I move the sliders the change is not reflected below in the output level indicator .
I tried to get information from pulseaudio documentation (man pages) but it is a kind of incomplete. The pulseaudio web-page and wiki is even worse. For example if I use the command:
pactl list short sinks 0 alsa_output.pci-0000_00_1b.0.analog-stereo module-alsa-card.c s16le 2ch 44100Hz RUNNING 1 FlashPlugin module-null-sink.c s16le 2ch 44100Hz IDLE
Where can I find the meaning of the different columns? I could not find it in the pulseaudio man poages (man pulseaudio, man pactl)?
Is there somewhere a detailed howto, manual or other doc for pulseaudio?
Thanks,
Istvan
I really do not know the answer to the problem you are having with your sound because my sound needs are different and I as I don't have any hassles I have had no need to go "fiddling". But I can offer the following: why are you having to do scripts to run your sound? Do you know which sound card/chip you have and isn't it supported by openSUSE's install process? I gave a Creative Sondblaster and during installation the correct driver for it was installed. The other thing- have you run 'alsamixer' (in terminal, command line, as normal user) to view and set the available channels for your sound card/chip? NOTE AT THIS POINT: pulseaudio used to stuff up the output from 'alsamixer' and you only saw 3 or 4 channels displayed; for example in my case by uninstalling pulseaudio I would then see all ~12 channels instead of only 4 with pulseaudio installed. (After you have set the channels for your sound card then you can re-install pulseaudio if you really need pulseaudio.) Lastly, there is some documentation - but I haven't read it - for both pavucontrol and pulseaudio in /usr/shar/doc/ . BC -- Using openSUSE 13.1, KDE 4.14.0 & kernel 3.16.2-1 on a system with- AMD FX 8-core 3.6/4.2GHz processor 16GB PC14900/1866MHz Quad Channel RAM Gigabyte AMD3+ m/board; Gigabyte nVidia GTX660 GPU -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org
participants (2)
-
Basil Chupin -
Istvan Gabor