# Audio recording

Source: [https://docs.qualcomm.com/doc/80-70015-50/topic/gst-audio-encode-example-without-flac.html](https://docs.qualcomm.com/doc/80-70015-50/topic/gst-audio-encode-example-without-flac.html)

The **gst-audio-encode-example** application encodes audio in FLAC or WAV formats.

A common use case for this application can be to encode live audio data for streaming or
            storage.

The figure shows the pipeline, which captures the audio, converts the stream into FLAC or
            WAV formats, encodes the stream, and stores it in a file. For more information on the
            plugins used in the pipeline, see [Pipeline flow](https://docs.qualcomm.com/doc/80-70015-50/topic/gst-audio-encode-example-without-flac.html#gst-audio-encode-example-without-flac__section_uj5_4v5_4bc).

Figure : gst-audio-encode-example pipeline
            
            ![](data:image/png;base64,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)

## Prerequisites

- To access your host device, enable SSH. For instructions, see [Use SSH](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-254/how_to.html#use-ssh).
- Enter the SSH shell and run the use cases:

        ssh root@<ip-addr of the target device>Copy to clipboard
- Enable the
                    display:

        export XDG_RUNTIME_DIR=/dev/socket/weston && export WAYLAND_DISPLAY=wayland-1Copy to clipboard
- Push the files from the host
                    machine:

        scp <filename> root@<IP address of target device>:/opt/Copy to clipboard

## Use case

For this use case, if you have a live audio source (like a microphone or an internet
                radio stream), you can encode this audio data into a more compact or standardized
                format for efficient transmission or storage.

Do the following to run the use case:

1. To run the application for different audio formats, use the following syntax:
                            
    `gst-audio-encode-example -o <path-file>
                            --audio_format=<format>`

The table provides a description of the command-line
                            parameters:

    | Command-line parameter | Description |
    | --- | --- |
    | `-o` | Specifies the absolute path to the output audio<br>                                        file. |
    | `-format` | Specifies the format of the audio file:<ul class="ul" id="gst-audio-encode-example-without-flac__ul_vhx_vw5_4bc"><br>                                            <li class="li"><code class="ph codeph">1</code> = FLAC</li><br><br>                                            <li class="li"><code class="ph codeph">2</code> = WAV</li><br><br>                                        </ul> |

    Run the application for FLAC and WAV audio formats:

    - Encode FLAC
                            audio:

            gst-audio-encode-example -o /opt/<filename>.flac --audio_format=1Copy to clipboard
    - Encode WAV audio:

            gst-audio-encode-example -o /opt/<filename>.wav --audio_format=2Copy to clipboard

To stop the use case, press CTRL + C.

## Expected output

The captured audio is encoded and written to a file based on the chosen format (FLAC
                or WAV).

Pull the files from the host machine:

    scp root@<IP address of target device>:/opt/<destination directory>Copy to clipboard

## Pipeline flow

In the audio encoding, the pipeline differs slightly based on the encoding
                format.

The table lists the plugins used to run the audio recording pipeline:

| Plugin | FLAC | WAV |
| --- | --- | --- |
| pulsesrc | Captures audio from the system<br>                                sound device. | Captures audio from the system<br>                                sound device. |
| capsfilter | Ensures that the audio is in a format suitable for the FLAC<br>                                encoder. | – |
| audioconvert | Converts the audio to the required<br>                                format. | Converts the audio to the required<br>                                format. |
| <ul class="ul" id="gst-audio-encode-example-without-flac__ul_n35_vy5_4bc"><br>                                    <li class="li">flacenc</li><br><br>                                    <li class="li">wavenc</li><br><br>                                </ul> | flacenc encodes the audio into FLAC format. | wavenc encodes the audio into WAV format. |
| filesink | Writes the encoded audio to a<br>                                file. | Writes the encoded audio to a<br>                                file. |

**Parent Topic:** [Sample applications for video and audio](https://docs.qualcomm.com/doc/80-70015-50/topic/audio-sample-applications.html)

Last Published: Oct 27, 2025

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