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Audio capture

798 bytes added, 15:05, 23 July 2021

→‎Input mode

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]]. == Recording Devices Input and output audio ==You Screenbits uses general terms for the audio sources which it can record 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 any recording speakers or playback headphones. In contrast, ''input audio'' refers to the audio generated by an external device or both. This includes , usually a microphone , and is provided as an input or to the system. == Audio capture mode ==In audio capture mode, audio devices are the only capture source so the output of speakersonly contains audio, and [[Recorder|recorder]] produces audio files. Select an audio device by #From the application window, click '''Primary Audio''' or button under ''Mode''section.#Under 'Secondary Audio'Source'' button in Main Viewsection, enable at least one of the input or audio devices to capture. [[File:Playbackcapture_mode-devicesaudio.png|frame|left|Figure 1: Playback Audio Capture (PrimaryAudio capture mode) devices]]

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 === 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:#From the [[Getting_started#Application_window|application window]], under ''Options'' section, turn '''Output audio''' or '''Input audio''' switch on. [[File:RecordingAudio-devicescapture.png|frame|left|Figure 12: Recording Audio capture (SecondaryScreen capture mode) devices]]

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To enable recording == Input mode ==You can choose the input mode for capturing audio from an input audio device such as a playback device (emicrophone.g. Speakers)Currently, two input modes are available:#In the main view, click ''Open-mic'Primary Audio'and '' button Push-to open selection menu-talk''.#Select an In open-mic mode, the input audio gets captured continuously while in push-to-talk mode, input audio device from gets captured only when the selection menuspecified push-to-talk key on keyboard is pressed. #Click '''Record''' button You can use push-to-talk mode to start recordingcapture your voice only when you speak. To change the input mode:

#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''.

#Select the desired input mode from '''Input mode''' selector.

To enable recording a recording device (e.g[[File:Input-audio-options. Microphone)png|frame|left|Figure 3:#In the main view, click '''Secondary Audio''' button to open selection menu.#Select an Input audio device from the selection menu. options]]#Click '''Record''' button to start recording.<br clear=all>

=== Notes =Volume ==*List of Screenbits uses system volume settings to capture audio devices. You can use ''Settings'' app to change volume for output and input devices may vary depending on your hardwareaudio:#Click '''Start''' to open ''Start Menu''.*To record the default device, select #Click '''Settings''' to open '<default>'Settings'' from selection menuapp.*To disable audio recording, select #Click '''System'''to open '<none>'System'' from selection menusettings.*If both primary and secondary devices are selected, Screenbits mixes both audio streams into a single audio track#Click '''Sound''' to change sound settings.*Bit[[File:System-rate, samplesound-rate and number of channels of the output are configurable from [[Settings#Audiosettings.png|frame|left|Audio SettingsFigure 4: System sound settings]].<br clear=all>

== Supported formats ==

Screenbits supports recording devices with the following audio formats for the inputto capture:

* 8kHz, 11.025kHz, 16kHz, 22.5kHz05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz and , 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 record 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:

#Select Click '''SettingsStart''' to open ''Start Menu''.#Click '' from 'Settings'Recording'' menu to open ''Settings'' viewapp.#From Click '''System'Input'' section under the to open ''AudioSystem'' tab, click settings.#Click '''ConfigureSound''' to open change sound settings.#Click '''Sound Control''' panel under ''Related Settings'' to open ''Sound'' control panel.#Right click on name of the device in list under the ''Playback'' or ''Recording'' tab and click '''Properties'''.

#From ''Default Format'' section under the ''Advanced Tab'' select one of the supported formats above.

#Click '''OK''' to apply changes to the device properties

 [[File:Audio-format.png|frame|left|Figure 25: Audio Format - Sound settings]]

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== Improving Performance ==

There are several ways to improve performance of Screenbits. If you want are experiencing glitches in the recorded audio or using Screenbits on a low-end device, follow one or more instructions on below to improve the performance.

 

==== Use default formats ====

If you record audio, select one of the following formats for the audio device from the [[Audio_recording#Supported_formats|Audio settings]]

*2 channel (stereo), 16bit, 44100 Hz

*2 channel (stereo), 16bit, 48000 Hz

 

==== Select the same format for multiple devices ====

If you record both recording and playback devices, make sure same format is selected for both devices. To make input and output match together to perform better, select '''Auto''' for sample-rate and channels from [[Settings#Audio_settings|Audio settings]].

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