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Tool

Description

Type
Rating
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MPEG4 Modifier modifies a MPEG-4 ASP video (AVI with XviD, DivX) without re-encoding (change aspect ratio, edit userdata, remove or add packed bitstream, and change interlaced field order). It can also show information about the video such as the amount of I/P/S/B-VOPs used, whether or not QPel/GMC were used, etc. Requires .NET Framework 2.0.

Free software
OS: Win
File size: 81KB
Portable version
Old versions
Version history
9.3/10
14 votes
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Screenshots

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Latest version

1.4.6 (January 11, 2015)



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Download MPEG4 Modifier 1.4.6  81KB  Win  Portable




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Download MPEG4 Modifier old versions



Software License

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



Supported operating systems

WinWindows



More information and other downloads




Complete Version history / Release notes / Changelog


1.4.6 (2015-Jan-10):

Marked as system DPI aware to fix blurry UI with high DPI settings.
Changed license to MIT (was GPL v2).


1.4.5 (2012-Sep-02):

Ability to export custom quantization matrix to .cqm file.
Fixed window layout with high DPI settings.
Supports loading on .NET 4.x runtime (not required; still 2.0 compatible).


1.4.4 (2007-Jan-13):

* Fixed a few small issues that prevented DivX subtitles from working.
* Added *.divx to the supported extension list in the file dialogs.
* A default file name is now provided when saving.


1.4.3 (2006-Nov-05):

* Doesn't remove delay frames anymore, this caused synch problems with joined videos.
* FourCC and user data information are now shown in the "Video Info" text.
* It's now possible to pack videos containing drop frames.


1.4.2 (2006-Sep-16):

* Fixed several problems with OpenDML reading/writing (writing bad OpenDML index entries, out of memory exception or unnecessary reading when loading, incomplete loading of files with damaged/missing index).


1.4.1 (2006-Aug-04):

* Fixed some problems with packing which also required corrections to the timestamp calculation code.
* If you try to load a non-MPEG4 video, the error message now displays which codec the file uses.
* Better default directories for load/save file dialogs.


1.4.0 (2006-Aug-03):

* AVI handling code completely rewritten, supports OpenDML and incomplete files (rebuilds the index including keyframe flags).
* Ability to add/readd packed bitstream.
* Optimized some parts, runs significantly faster.
* Added Cancel button on load/save progress window.
* Doesn't freeze explorer while loading a file after dropping onto the source textbox.
* Updated code to take advantage of C# 2.0 features, and lots of cleanup.


1.3.4 (2005-Dec-14):

* Re-added support for files with packed bitstream containing real N-VOPs (apparently the XviD 1.1 betas do this)


1.3.3 (2005-Dec-11):

* Fixed bug when unpacking files with missing N-VOPs (caused by cutting/joining)
* Removed support for files with packed bitstream containing real N-VOPs to simplify code


1.3.2 (2005-Mar-08):

* New feature: Video Info now shows how many warp points are actually used (for example, DivX indicates 2 warp points in the VOL, but the 2nd one is never used)
* Added detection for corrupt RIFF chunk sizes
* Fixed byte order problem in AVI index on big endian systems (for command line unpacker running on OS X)


1.3.1 (2005-Jan-06):

* Added percent in titlebar of progress window
* Added 1.85:1 display aspect ratio
* Fixed saving AVIs with no index
* Fixed small cosmetic issues in main window


1.3.0 (2004-Dec-20):

* New feature: option to automatically change user data when unpacking
* Fixed bugs with 'rec ' list indexing
* Added progress bar during load and save
* A file can be loaded from the command line, or by dropping it on the AVI Source text box
* Error checking is less strict (no more "No dummy N-VOP found for packed frame" and "Invalid VOL" errors)
* Files are closed sooner, and output file is deleted if an error occurs during save
* Other code improvements and clean-up


1.2.0 (2004-Sep-14):

* New feature: modification of field order for interlaced videos
* New feature: video information (i.e. whether or not QPel/GMC were used, stats for how many I/B/P/S/N-VOPs were used, list of VOP type and timestamp for each frame, etc.)
* Packed bitstream removal can now tell the difference between dummy N-VOPs and real N-VOPs (though I'm told no encoder currently writes real N-VOPs in a packed bitstream)


1.1.0 (2004-Jun-24):

* New feature: packed bitstream removal
* New feature: userdata modification
* Recognizes frames written in '00db' chunks


1.0.0 (2004-Jun-14):

* Has a proper GUI
* Warns if the AVI is OpenDML
* Reads the frame width/height from the video (for DAR->PAR calculation)
* Writes dwSuggestedBufferSize in the video stream header (it wrote 0 before)
* Supports 'rec ' lists
* Code has been restructured
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Acronyms / Also Known As

MPEG4 Modifier, MPEG4Modifier, mpeg modifier, mpegmodifier



Download MPEG4 Modifier Portable download from the Download links under Download and Download other versions!



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14 reviews, Showing 1 to 5 reviews


Thanks, this helped me out :)

Review by Paul on Mar 7, 2018 Version: 1.4.6 OS: Windows 7 64-bit Ease of use: 8/10 Functionality: 8/10 Value for money: 10/10 Overall: 9/10




please, this soft for 3gp???

Review by Angel on Nov 17, 2017 Version: 1.4.6 OS: Windows 7 Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




No comments. Rating it only.

Review by Angel on Nov 17, 2017 Version: 1.4.6 OS: Windows 7 Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




This tool is just what I've been looking for
one thing is there a way to use batch when processing multi files?


Review by Somethingelse- on Sep 14, 2014 Version: 1.4.5 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 6/10 Value for money: 10/10 Overall: 8/10




this is a great tool, the only bad thing is that... I,m having trouble with avi high definition files.
they have more then 2 gigabytes, and I don,t think this tool supportīs it.

my files are usually in 720p resolution, e use divx plus converter to convert my mkv ( h264 )
to avi ( divx + ac3 or mp3 sound )
because my memup media player only supportīs avi hd files ( xvid or divx )
it doesn't supports h264

and i hould like to change the aspect ratio to 16:9 in ( avi hd )
but the tool gives me a error...

on regular 700mb, standard resolution avi files the program works fine.

i hope that someone improve this program, to keep track of modern high definition files.

xvid or divx support today up to 1920x1080 resolution, itīs a bloody shame, to see a movie with an aspect ratio of 2.35.1 in a 16:9 TV ( I see it, with black bars )

if the avi is on standard size and resolution I can easily change to full-screen 16:9
go to " display ar" choose 16:9 and click save file :-) ( no black bars )

this is a one of kind tool, congratulations to the author


Review by sintronics on Dec 9, 2011 Version: v1.4.4 OS: Vista Ease of use: 10/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10


14 reviews, Showing 1 to 5 reviews

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