Difference between revisions of "Audio capture"

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You can record audio from any recording or playback device on the recorded video. This includes microphone input or output of the speakers. Select an audio device by the '''Audio Device''' button in the Main View.
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Screenbits captures audio from output and input audio devices. You can capture audio either individually in audio capture mode or add it to the captured video when using other [[Capture_mode|capture modes]].
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[[File:Audio-devices.png|frame|left|Figure 1: Audio Devices]]
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== Input and output audio ==
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Screenbits uses general terms for the audio sources which it can capture.
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The term ''output audio'' refers to the audio which is generated by the system and provided to an external device. This is usually the system sound which you can hear from speakers or headphones. In contrast, ''input audio'' refers to the audio generated by an external device, usually a microphone, and is provided as an input to the system.
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== Audio capture mode ==
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In audio capture mode, audio devices are the only capture source so the output only contains audio, and [[Recorder|recorder]] produces audio files.
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#From the application window, click '''Audio''' button under ''Mode'' section.
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#Under ''Source'' section, enable at least one of the input or audio devices to capture.
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[[File:capture_mode-audio.png|frame|left|Figure 1: Audio Capture (Audio capture mode)]]
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=== Notes ===
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*You can manually choose a specific device to capture rather than the default device.
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== Other capture modes ==
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To capture audio in a capture mode other that audio capture mode:
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#From the [[Getting_started#Application_window|application window]], under ''Options'' section, turn '''Output audio''' or '''Input audio''' switch on.
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[[File:Audio-capture.png|frame|left|Figure 2: Audio capture (Screen capture mode)]]
 
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To enable audio recording:
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== Input mode ==
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#In the main view, click the '''Audio Device''' button to open the selection menu.
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You can choose the input mode for capturing audio from an input audio device such as a microphone. Currently, two input modes are available: ''Open-mic'' and ''Push-to-talk''.
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#Select an audio device from the selection menu.  
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#Click the '''Record''' button to start recording.
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In open-mic mode, the input audio gets captured continuously while in push-to-talk mode, input audio gets captured only when the specified push-to-talk key on keyboard is pressed. You can use push-to-talk mode to capture your voice only when you speak.
  
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=== Notes ===
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To change the input mode:
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*List of input devices may vary depending on your hardware.
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*To disable audio recording, select '''<none>''' from the selection menu.
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#From the [[Getting_started#Application_window|application window]], click '''Input audio options''' button next to the input audio switch under ''Options'' or ''Audio'' section to open ''Input audio options''.
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*You may change the bit-rate, sample-rate or number of channels of the output stream from [[Settings#Audio|Audio Settings]].
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#Select the desired input mode from '''Input mode''' selector.
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[[File:Input-audio-options.png|frame|left|Figure 3: Input audio options]]
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== Volume ==
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Screenbits uses system volume settings to capture audio devices. You can use ''Settings'' app to change volume for output and input audio:
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#Click '''Start''' to open ''Start Menu''.
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#Click '''Settings''' to open ''Settings'' app.
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#Click '''System''' to open ''System'' settings.
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#Click '''Sound''' to change sound settings.
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[[File:System-sound-settings.png|frame|left|Figure 4: System sound settings]]
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== Supported formats ==
 
== Supported formats ==
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Screenbits supports recording the following audio formats:
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Screenbits supports devices with the following audio formats to capture:
  
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* 44100hz 16bits mono
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* 8kHz, 11.025kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz sample rates
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* 44100hz 16bits stereo
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* 1 (mono), 2 (stereo), 4, 6 and 8 channels
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* 48000hz 16bits mono
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* 16, 24 and 32 bits per sample
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* 48000hz 16bits stereo
 
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* 96000hz 16bits mono
 
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* 96000hz 16bits stereo
 
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* 196000hz 16bits mono
 
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* 196000hz 16bits stereo
 
  
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If you attempt to record an audio device with an unsupported format, an error message pops up asking you to select a different format for the device.  
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If you attempt to capture an audio device with an unsupported format, an error message pops up asking you to select a different format for the device.  
  
 
To change the default format of an audio device:
 
To change the default format of an audio device:
  
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#Select '''Settings''' from the ''Recording'' menu to open ''Settings'' view.
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#Click '''Start''' to open ''Start Menu''.
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#From the ''Audio'' section under the ''Audio & Video'' tab, click '''Configure''' to open ''Sound'' settings.
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#Click '''Settings''' to open ''Settings'' app.
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#Right click on the name of the device in list under the ''Playback'' or ''Recording'' tab and click '''Properties'''.
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#Click '''System''' to open ''System'' settings.
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#From the ''Default Format'' section under the ''Advanced Tab'' select one of the supported formats above.
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#Click '''Sound''' to change sound settings.
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#Click '''Sound Control''' panel under ''Related Settings'' to open ''Sound'' control panel.
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#Right click on name of the device in list under ''Playback'' or ''Recording'' tab and click '''Properties'''.
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#From ''Default Format'' section under the ''Advanced Tab'' select one of the supported formats above.
 
#Click '''OK''' to apply changes to the device properties
 
#Click '''OK''' to apply changes to the device properties
  
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[[File:Audio-format.png|frame|left|Figure 5: Audio Format - Sound settings]]
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[[File:Audio-format.png|frame|left|Figure 2: Audio Format - Sound settings]]
 
 
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Latest revision as of 15:05, 23 July 2021

Screenbits captures audio from output and input audio devices. You can capture audio either individually in audio capture mode or add it to the captured video when using other capture modes.

Input and output audio

Screenbits uses general terms for the audio sources which it can capture.

The term output audio refers to the audio which is generated by the system and provided to an external device. This is usually the system sound which you can hear from speakers or headphones. In contrast, input audio refers to the audio generated by an external device, usually a microphone, and is provided as an input to the system.

Audio capture mode

In audio capture mode, audio devices are the only capture source so the output only contains audio, and recorder produces audio files.

  1. From the application window, click Audio button under Mode section.
  2. Under Source section, enable at least one of the input or audio devices to capture.
Figure 1: Audio Capture (Audio capture mode)


Notes

  • You can manually choose a specific device to capture rather than the default device.

Other capture modes

To capture audio in a capture mode other that audio capture mode:

  1. From the application window, under Options section, turn Output audio or Input audio switch on.
Figure 2: Audio capture (Screen capture mode)


Input mode

You can choose the input mode for capturing audio from an input audio device such as a microphone. Currently, two input modes are available: Open-mic and Push-to-talk.

In open-mic mode, the input audio gets captured continuously while in push-to-talk mode, input audio gets captured only when the specified push-to-talk key on keyboard is pressed. You can use push-to-talk mode to capture your voice only when you speak.

To change the input mode:

  1. From the application window, click Input audio options button next to the input audio switch under Options or Audio section to open Input audio options.
  2. Select the desired input mode from Input mode selector.
Figure 3: Input audio options


Volume

Screenbits uses system volume settings to capture audio devices. You can use Settings app to change volume for output and input audio:

  1. Click Start to open Start Menu.
  2. Click Settings to open Settings app.
  3. Click System to open System settings.
  4. Click Sound to change sound settings.
Figure 4: System sound settings


Supported formats

Screenbits supports devices with the following audio formats to capture:

  • 8kHz, 11.025kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz sample rates
  • 1 (mono), 2 (stereo), 4, 6 and 8 channels
  • 16, 24 and 32 bits per sample

If you attempt to capture an audio device with an unsupported format, an error message pops up asking you to select a different format for the device.

To change the default format of an audio device:

  1. Click Start to open Start Menu.
  2. Click Settings to open Settings app.
  3. Click System to open System settings.
  4. Click Sound to change sound settings.
  5. Click Sound Control panel under Related Settings to open Sound control panel.
  6. Right click on name of the device in list under Playback or Recording tab and click Properties.
  7. From Default Format section under the Advanced Tab select one of the supported formats above.
  8. Click OK to apply changes to the device properties
Figure 5: Audio Format - Sound settings


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