https://github.com/andrewrk/waveform

simultaneously transcode and generate visuals for an audio file
https://github.com/andrewrk/waveform

Last synced: 3 months ago
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simultaneously transcode and generate visuals for an audio file

• Host: GitHub
• URL: https://github.com/andrewrk/waveform
• Owner: andrewrk
• License: mit
• Created: 2012-08-04T02:22:09.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2014-10-08T03:47:29.000Z (over 9 years ago)
• Last Synced: 2024-01-16T22:08:38.445Z (5 months ago)
• Language: C
• Homepage:
• Size: 342 KB
• Stars: 257
• Watchers: 31
• Forks: 30
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-stars - andrewrk/waveform - simultaneously transcode and generate visuals for an audio file (C)

README

        
# waveform

![](http://i.imgur.com/oNy41Cr.png)

Input: any format audio or video file

Output: any or all of these:

 * transcoded audio file

 * waveform.js-compatible JSON representation of the audio file

 * PNG rendering of the waveform

## Usage

    waveform [options] in [--transcode out] [--waveformjs out] [--png out]

    (where `in` is a file path and `out` is a file path or `-` for STDOUT)

    Options:

    --scan                       duration scan (default off)

    Transcoding Options:

    --bitrate 320                audio bitrate in kbps

    --format name                e.g. mp3, ogg, mp4

    --codec name                 e.g. mp3, vorbis, flac, aac

    --mime mimetype              e.g. audio/vorbis

    --tag-artist artistname      artist tag

    --tag-title title            title tag

    --tag-year 2000              year tag

    --tag-comment comment        comment tag

    WaveformJs Options:

    --wjs-width 800              width in samples

    --wjs-precision 4            how many digits of precision

    --wjs-plain                  exclude metadata in output JSON (default off)

    PNG Options:

    --png-width 256              width of the image

    --png-height 64              height of the image

    --png-color-bg 00000000      bg color, rrggbbaa

    --png-color-center 000000ff  gradient center color, rrggbbaa

    --png-color-outer 000000ff   gradient outer color, rrggbbaa

## Installation

1. Install [libgroove](https://github.com/andrewrk/libgroove) dev package.

   Only the main library is needed.

2. Install libpng and zlib dev packages.

3. `make`

## Related Projects

 * [Node.js module](https://github.com/andrewrk/node-waveform)

 * [PHP Wrapper Script](https://github.com/polem/WaveformGenerator)

 * [Native Interface for Go](https://github.com/dz0ny/podcaster/blob/master/utils/waveform.go)