Audio Pro Network

Open Source Notices

Audio Pro Network software includes open source components. Each app lists its components, licenses and full license texts at the bottom of its About window, or for our web apps at the bottom of the Help panel.

FFmpeg source code

This software uses code of FFmpeg licensed under the LGPLv2.1 and its source can be downloaded here.

Component

Name: FFmpeg (ffmpeg and ffprobe command line programs)
Version: 8.1.3
License: GNU Lesser General Public License, version 2.1 or (at your option) any later version
Copyright: Copyright © 2000-2026 the FFmpeg developers
Project: ffmpeg.org
How it is used: FramePlayr runs FFmpeg as a separate, unmodified program to read video file information and to convert ProRes and DNx files to H.264 for playback. FFmpeg is not linked into FramePlayr.

Source code

The complete, unmodified source code for the exact FFmpeg version included with FramePlayr, with its official signature:

Download FFmpeg 8.1.3 source

ffmpeg-8.1.3.tar.xz.asc.txt (PGP signature)
BUILD-CONFIG.txt (full build configuration)

Verify the download

The source is signed by the FFmpeg release signing key <ffmpeg-devel@ffmpeg.org>, fingerprint:

FCF9 86EA 15E6 E293 A564  4F10 B432 2F04 D676 58D8

This matches the key published on the FFmpeg download page. To verify with GnuPG:

gpg --verify ffmpeg-8.1.3.tar.xz.asc.txt ffmpeg-8.1.3.tar.xz

Build configuration

FFmpeg was compiled for macOS (Apple Silicon and Intel) as an LGPL-only build: no GPL or non-free components, and no libx264. Video encoding uses Apple VideoToolbox and audio encoding uses Apple AudioToolbox. The complete configure lines for both architectures are in BUILD-CONFIG.txt. Key options:

--disable-gpl --disable-nonfree --disable-version3 --disable-autodetect
--disable-network --enable-static --enable-zlib
--enable-videotoolbox --enable-audiotoolbox

Your rights

You may obtain, study, modify, and redistribute FFmpeg under the terms of the LGPL.
FFmpeg is included in FramePlayr as separate executable files. You may replace them with your own compatible build of FFmpeg.
The full text of the LGPL is included inside the FramePlayr application and is also available at gnu.org.
Audio Pro Network does not own FFmpeg. FFmpeg is a trademark of Fabrice Bellard, originator of the FFmpeg project. FFmpeg does not endorse FramePlayr.

Written offer

For at least three years after we last distribute a version of our software that includes FFmpeg, we will provide the complete corresponding FFmpeg source code to anyone who asks, free of charge apart from any reasonable cost of physically delivering it.

Contact: notices@audiopronetwork.com

SoundTouch JS source code

This software uses code of SoundTouch JS licensed under the LGPLv2.1, modified by Audio Pro Network. The original source, our modified file and the list of changes can be downloaded below.

Component

Name: SoundTouch JS (JavaScript audio time-stretch and pitch library)
Version: 0.3.0
License: GNU Lesser General Public License, version 2.1 or (at your option) any later version
Copyright: Copyright © Olli Parviainen; Copyright © Ryan Berdeen; Copyright © Jakub Fiala; Copyright © Steve 'Cutter' Blades
Project: github.com/cutterbl/SoundTouchJS
How it is used: Swoopr loads SoundTouch JS as a separate file to stretch audio in time. It is not compiled into Swoopr's own code. We changed only the end of the file, so it loads as a plain script with no network.

Source code

The complete original source of SoundTouch JS 0.3.0 (tag v0.3.0), our modified file exactly as it ships in Swoopr, and the list of every change:

Download SoundTouch JS 0.3.0 source

soundtouch-0.3.0-modified.js (our modified file)
SOUNDTOUCH-CHANGES.txt (what we changed)

Verify the download

SHA-256 checksums:

1b61f25682aabf0065ceb78eb8f38b1959caaa4f31b34020ef0e28f8a8d82095  SoundTouchJS-0.3.0.tar.gz
9ce9130ade33d6a0de89881aecd2259ac4d7a27d5455b7d721eb527a26c525b5  soundtouch-0.3.0-modified.js

To check on a Mac:

shasum -a 256 SoundTouchJS-0.3.0.tar.gz soundtouch-0.3.0-modified.js

What we changed

Lines 1 to 792 are unchanged. At the end of the file we removed the ES module export line and the source map comment, and added one line that exposes the classes as a single global object, window.SoundTouchJS, so the library loads as a plain script inside the app. Full details in SOUNDTOUCH-CHANGES.txt.

Your rights

You may obtain, study, modify, and redistribute SoundTouch JS under the terms of the LGPL.
SoundTouch JS is included in Swoopr as a separate file, lib/soundtouch.js inside the app. You may replace it with your own compatible version. Changing a file inside the app changes its code signature, so macOS may ask you to confirm the app before it opens.
The full text of the LGPL is included inside the Swoopr application and is also available at gnu.org.
Audio Pro Network does not own SoundTouch JS. Its authors do not endorse Swoopr.

Written offer

For at least three years after we last distribute a version of our software that includes SoundTouch JS, we will provide the complete corresponding source code to anyone who asks, free of charge apart from any reasonable cost of physically delivering it.

Contact: notices@audiopronetwork.com

APN news page

The APN news page has no About window, so its third-party services are listed here. It includes no third-party code. To show headlines, your browser contacts these services directly:

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