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GPAC is an open-source multimedia framework focused on modularity and standards compliance. GPAC provides tools to process, inspect, package, stream playback and interact with media content. Such content can be any combination of audio, video, subtitles, metadata, scalable graphics, encrypted media, 2D/3D graphics and ECMAScript. GPAC is best-known for its wide MP4 capabilities and is popular among video enthusiasts, academic researchers, standardization bodies, and professional broadcasters. MP4Box is a multimedia packager, with a vast number of functionalities: conversion, splitting, hinting, dumping and others. It is a command-line tool.

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GPAC MP4Box screenshot
Latest version

1.0.1 / 1.1.0 Nightly (September 10, 2020)


Visit developer's site

Download GPAC MP4Box 1.0.1 Windows 64-bit  43MB  Win64

Download GPAC MP4Box 1.0.1 Windows  38MB  Win

Download GPAC MP4Box 1.0.1 Mac 64-bit  28MB  Mac64

Download GPAC MP4Box 1.0.1 Linux 64-bit  4MB  Linux64

Download Beta and other versions

Download GPAC MP4Box 1.1.0 Nightly Windows 64-bit  44MB  Win64

Download GPAC MP4Box 1.1.0 Nightly Windows  38MB  Win

Download GPAC MP4Box 1.1.0 Nightly Mac  29MB  Mac

Download GPAC MP4Box 1.1.0 Nightly Linux  5MB  Linux

Download old versions

Download GPAC MP4Box old versions

Software License

Free software / FOSS (Free download and also Free and Open Source Software)

Supported operating systems

WinWindows MacMac OS LinuxLinux

More information and other downloads

Download Mp4box 0.4.6 here.
Download Mp4box 0.4.4 here.
Download Mp4box 0.4.3 here.

Download YAMB here, a mp4box GUI.

Download my MP4box GUI here, another simple mp4box GUI.

Download MP4 FastStart here or here(direct link), it adjusts the MP4s metadata to allow for Flash players to play them right away, while it progressively downloads. Or use mp4box with the hint command(mp4box -hint video.mp4)

Version history / Release notes / Changelog

GPAC 1.0.1

This release fixes build and installation issues in 1.0.0, as well as various bugs introduced during the migration to the filters architecture.

It also adds several small features:

better ttml import
better support for MPEGH audio
support fur DASH UTCTiming
manifest generation from pre-fragmented DASH/HLS mp4
speed optimization in isobmf reading (normal and fragmented)
improved JS API for the filter session
core tools exposed as JS module (file io, bitstream, etc ...)
android fixes

GPAC 1.0

We are thrilled to announce the release of GPAC 1.0, the first official release of GPAC "filters", a complete re-architecture of GPAC streaming core.

You can have a quick overview of the new possibilities of GPAC in our fosdem 2020 talk or our MMSYS'20 presentation.

A lot of new things are present in this release:

Complete rewrite of GPAC streaming core:
addition of a filter-based architecture, used by MP4Client and MP4Box,
moving all decoders and demuxer plugins of MP4Client and most of MP4Box import/export code as filters for this new architecture,
moving DASH/HLS segmenter to a filter,
moving MP4Client compositor and most of the GF_Terminal internals to a filter,
addition of a new application gpac, whose only purpose is to create and run filter chains,
removal of MP42TS and DashCast applications since these functionalities are provided by gpac,
deprecation of some features (widget management, MSE draft implementation for SVG media, UPnP, TEMI player support).
Profile system allowing to override through a static file default options of all filters and libgpac core.
Alias system for gpac app to simplify your command lines.
Enhanced DASHer:
Support for HLS and dual HLS / DASH generation.
Support for any input.
True low-latency mode for DASH.
Support for multiple periods.
Support for other segment formats (raw, mkv, webm currently tested).
Input and outputs
Generic pipe, TCP, UDP, and Unix Domain socket input and output.
RTSP server output.
HTTP output (client and server), supporting low latency DASH access.
Ad-hoc stream format called GSF to allow serialization to file, pipe or socket of a session (for distributed filter chains), supporting AES-128 CBC encryption.
Raw audio (PCM) and video (RGB, YUV) reframers and exporters.
HEVC tile spliting and merging filters.
Compositor is a standalone filter (SVG/BIFS/VRML graphics in a filter chain).
Image encoding support through libjpg and libpng.
Full FFMPEG support:
Encoding/decoding through FFMPEG libavcodec.
Multiplexing/demultiplexing through FFMPEG libavformat.
Device grabbers through FFMPEG libavdevice.
Raw audio and video filters through FFMPEG libavfilter.
Support for QuickJS (ES2020) and bindings for:
Complete filter API.
GPAC software rasterizer (EVG).
WebGL 1.0 Core.
XmlHttpRequest and uDOM APIs.
Inspect and analyze filter.
MPEG-2 TS splitter.
Video cropper filter with zero-copy mode.
Video flip filter.
Source concatenation filter.
Simple audio and video output filters.
Experimental audio and video rewinder filter.
On-the-fly encryption and decryption, now available as filters.
Segment-based encryption and decryption.
Box customization.
Better QT support, ProRes parsing and dumping.
Support for raw media (QT style or ISOBMFF for audio).
Simplify HEIF batch conversion through item to track mapping.
Reading from pipes (fragmented or progressive files).
Writing to packets rather than files.
Fast interleaved file creation mode with less storage requirements.
FileIO wrapper for cases where files are not stored in a file system known by GPAC.
Testing and Documentation:
Live doc generation (man and wiki).
Improved coverage.
Split test suite as dedicated repository.
Moved all resource to
Started howto pages on wiki.
Many bug fixes.
As usual, installers are available on for most common platforms.

Enjoy, give us feedback and spread the news !

View full changelog

Sections/Browse similar tools

Guides and How to's

Acronyms / Also Known As

GPAC MultiMedia, MP4 FastStart, MP4 Fast Start, Mp4Box

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14 reviews, Showing 1 to 5 reviews

Rating by Touchatonkh on Sep 2, 2020 Version: 1.0 OS: Windows 10 64-bit Ease of use: 1/10 Functionality: 1/10 Value for money: 10/10 Overall: 1/10

Rating by Touchatonkh on Sep 2, 2020 Version: 1.0 OS: Windows 10 64-bit Ease of use: 1/10 Functionality: 1/10 Value for money: 10/10 Overall: 1/10

On Ubuntu was following this and it worked

sudo apt-get install subversion
sudo svn co gpac
cd gpac
sudo /configure --disable-opengl --use-js=no --use-ft=no --use-jpeg=no --use-png=no --use-faad=no --use-mad=no --use-xvid=no --use-ffmpeg=no --use-ogg=no --use-vorbis=no --use-theora=no –use-openjpeg=no
sudo make
sudo make install
cp bin/gcc/ /usr/lib

Review by _Al_ on May 22, 2020 Version: --- OS: Linux Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10

Tried to install on Linux Mint 19.3, and got following message:
Error: Dependency is not satisfiable: libavcodec-ffmpeg56(>=7:2.4) | libavcodec-ffmpeg-extra56(>=7:2.4).
I got a similar error trying to install an older version some time ago, and it was a pain in the butt trying to locate these files for installation, so much so, that it is not worth the trouble. If you produce software and claim it works under Linux, why don't you have the sense to check it, and ensure that dependencies are met, instead of wasting other peoples time?

Review by an Other on May 22, 2020 Version: MP4Box 0.8.0 OS: Linux Ease of use: 1/10 Functionality: 1/10 Value for money: 1/10 Overall: 1/10

Tha 64-bit build od MP4Box requires the files 'libeay32.dll' and 'ssleay32.dll'. Which is weird, IMNSHO — from what I have read thus far, these two files are OpenSSL stuff, and I see no point in making an MP4 multiplexer depend on SSL functions...

Review by El Heggunte on May 30, 2016 Version: 0.6.2 rev551 OS: Windows 7 64-bit Ease of use: 7/10 Functionality: 8/10 Value for money: 9/10 Overall: 8/10

14 reviews, Showing 1 to 5 reviews

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