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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.
Free software
OS:
File size: 72MB
Other versions
Old versions
Version history
OS:
File size: 72MB
Other versions
Old versions
Version history
Screenshots
Latest version
Download
Download GPAC MP4Box 26.02 Windows 64-bit 72MB Win64
Download GPAC MP4Box 26.02 Mac 64-bit 72MB Mac64
Download GPAC MP4Box 26.02 Linux 64-bit 72MB Linux64
Download old versions
Software License
Supported operating systems
Mac OS Linux More information and other downloads
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)
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 / What's New
GPAC 26.02
5 February 2026Blog, Community, News, ReleaseJean Le Feuvre
We are happy to announce the release of GPAC 26.02, moving to year.month naming scheme from now on.
This release brings many new features in packaging, Multicast ABR with HTTP repair, HTTP/3 support and other goodies, check the complete changelog below for more details !
This release also brings a new web UI for remote monitoring of long-running GPAC sessions, allowing real-time visualization of the session.
As usual, installers are available on gpac.io for most common platforms.
Enjoy, give us feedback and spread the news!
Read more: GPAC 26.02
Detailed changelog:
gpac
Added mode for testing deferred graph linking apps
main() can return filter session error code using -rv
MP4Box
Better support for HEIF/AVIF import
New ‘times’ option to rewrite timestamps
Core tools
Network Capture and Replay using pcap or pcapng, including looping, loss and reordering simulation
HTTP/3 support for client and server
Added libcurl as backend for GPAC downloader
QuickJS 2025, FFmpeg 8
Improved GFIO (including file deletion)
Media Formats
ISOBMFF external tracks support
Event Message Tracks support
Improved support SCTE-35, id3, CC, timecodes and other markers
Improved HDR signaling support
IAMF support
Motion JPEG2000
AC-4 support
AVS3 support
MPEG-DASH & HLS
SSR support for L3D low latency, base64 encoding of init segments
HLS groups, IV injection
DASH/HLS: new segcts option to derive startNumber from first packet cts
mux time prft injection
Remote monitoring
A new WebSocket based remote monitoring UI is available for GPAC
WebSocket server for JS scripts
Filters
DVB-I MABR FLUTE mux and demux
MABR (ROUTE/FLUTE) HTTP repair support with full or partial modes
MABR (ROUTE/FLUTE) on unicast
mediaserver.js HTTP gateway filter supporting MABR sources
avmix playlists now accept ipid:// urls to locate input pids, allowing to specify playlists independently from source URLs
ClosedCaptions encoder
TTML merger
flist: Playlist piping, DASH perdiod auto-switch signaling
pin: flush signaling upon broken pipe
M2TS: USAC support, non real-time NTP injection for TEMI, real-time regulation option for tssplit and tsgendts
dvb4linux is back (Terrestrial and Satelite including dibseqc)
reframer: time-aligned mode, time discontinuities handling
nhml: ability to process fragmented streams
bsrw: timecodes injection and rewriting
seiloader filter for SEI and AV1 OBUs
FFmpeg raw protocol support (use gpac for demux and mux)
Emscripten
Improved WASM support
Fixes in UI
Other
Improved Wiki: glossary, developer section, …
Integration with GStreamer (gpac-gst-plugin)
Introduce unit tests in complement to the testsuite and various buildbot continuous checks
Many bug fixes and security patches
5 February 2026Blog, Community, News, ReleaseJean Le Feuvre
We are happy to announce the release of GPAC 26.02, moving to year.month naming scheme from now on.
This release brings many new features in packaging, Multicast ABR with HTTP repair, HTTP/3 support and other goodies, check the complete changelog below for more details !
This release also brings a new web UI for remote monitoring of long-running GPAC sessions, allowing real-time visualization of the session.
As usual, installers are available on gpac.io for most common platforms.
Enjoy, give us feedback and spread the news!
Read more: GPAC 26.02
Detailed changelog:
gpac
Added mode for testing deferred graph linking apps
main() can return filter session error code using -rv
MP4Box
Better support for HEIF/AVIF import
New ‘times’ option to rewrite timestamps
Core tools
Network Capture and Replay using pcap or pcapng, including looping, loss and reordering simulation
HTTP/3 support for client and server
Added libcurl as backend for GPAC downloader
QuickJS 2025, FFmpeg 8
Improved GFIO (including file deletion)
Media Formats
ISOBMFF external tracks support
Event Message Tracks support
Improved support SCTE-35, id3, CC, timecodes and other markers
Improved HDR signaling support
IAMF support
Motion JPEG2000
AC-4 support
AVS3 support
MPEG-DASH & HLS
SSR support for L3D low latency, base64 encoding of init segments
HLS groups, IV injection
DASH/HLS: new segcts option to derive startNumber from first packet cts
mux time prft injection
Remote monitoring
A new WebSocket based remote monitoring UI is available for GPAC
WebSocket server for JS scripts
Filters
DVB-I MABR FLUTE mux and demux
MABR (ROUTE/FLUTE) HTTP repair support with full or partial modes
MABR (ROUTE/FLUTE) on unicast
mediaserver.js HTTP gateway filter supporting MABR sources
avmix playlists now accept ipid:// urls to locate input pids, allowing to specify playlists independently from source URLs
ClosedCaptions encoder
TTML merger
flist: Playlist piping, DASH perdiod auto-switch signaling
pin: flush signaling upon broken pipe
M2TS: USAC support, non real-time NTP injection for TEMI, real-time regulation option for tssplit and tsgendts
dvb4linux is back (Terrestrial and Satelite including dibseqc)
reframer: time-aligned mode, time discontinuities handling
nhml: ability to process fragmented streams
bsrw: timecodes injection and rewriting
seiloader filter for SEI and AV1 OBUs
FFmpeg raw protocol support (use gpac for demux and mux)
Emscripten
Improved WASM support
Fixes in UI
Other
Improved Wiki: glossary, developer section, …
Integration with GStreamer (gpac-gst-plugin)
Introduce unit tests in complement to the testsuite and various buildbot continuous checks
Many bug fixes and security patches
View full changelog
Sections/Browse similar tools
Guides and How to's
Acronyms / Also Known As
Notify me when software updated or report software
| 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
https://www.techoism.com/install-mp4box-gpac/
sudo apt-get install subversion
sudo svn co https://svn.code.sf.net/p/gpac/code/trunk/gpac 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/libgpac.so /usr/lib
https://www.techoism.com/install-mp4box-gpac/
sudo apt-get install subversion
sudo svn co https://svn.code.sf.net/p/gpac/code/trunk/gpac 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/libgpac.so /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?
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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Our hosted software are virus and malware scanned with several antivirus programs using www.virustotal.com. (NOTE! Just one virustotal warning is 99.9% a false positive. And some software might receive 2-6 warnings but it's if they are not all same virus/trojan then it's 99% false positives.)
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NO LONGER DEVELOPED = The software hasn't been updated in over 5 years.
RECENTLY UPDATED = The software has been updated the last 31 days.
Freeware = Download Free software.
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Trialware = Also called shareware or demo. Free Trial version available for download and testing with usually a time limit or limited functions.
Payware = No demo or trial available.
Portable version = A portable/standalone version is available. No installation is required.
v1.0.1 = Latest version available.
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Download 15MB = A direct link to the software download.
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Portable version available = Download the portable version and you can just extract the files and run the program without installation.
Old versions available = Download old versions of the program.
Version history available = Complete changelog on our site.
= Windows version available. = Mac OS version available. = Linux version available.Our hosted software are virus and malware scanned with several antivirus programs using www.virustotal.com. (NOTE! Just one virustotal warning is 99.9% a false positive. And some software might receive 2-6 warnings but it's if they are not all same virus/trojan then it's 99% false positives.)
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