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OpenIV for GTA 5 is a multifunctional editor and archive file manager for the PC version of Grand Theft Auto V. With this program you can: open, view and edit game files, change and save your values ​​in them, as well as unpack archive files to view them in the usual way and a clear file, and then archive them back. Thanks to these functions, you can change the game at your discretion: edit models, values, characteristics and parameters of everything in the game, change texts, etc. That is, create full-fledged mods that depend only on your modding knowledge. This program is also required to run some.

What's new in OpenIV 3.1 version:

Support for GTA 5 on Playstation 4;
Transport animation player in GTA V;
Proper support for multi-channel audio;
openFormats support for YVR;
support for new shaders in openFormats for GTA 5 models;
and much more.

New in OpenIV 2.6.4

Export Audio
Ability to export game audio files to .wav format.

Audio Editing
Ability to edit audio files (.awc) such as weapons and vehicle sounds.

What's new in OpenIV 2.6.3 version:

ASI Manager
A new tool called "ASI Manager" with which you can easily install or remove ASI loader and our plugins for GTA 5.

OpenIV.ASI 1.1
The new version of OpenIV.ASI will allow you to securely save and will place mods in a special "mods" folder. Just put the archive (for example, x64a.rpf) that you want to modify in the "mods" folder and make the changes you need in this copy of the file. OpenIV.ASI will force the game to load archives from the “mods” folder, thereby the game will start with the parameters you have entered and modified. Also, if you want to go back to the original files and run the standard one, simply remove OpenIV.ASI and ASI Loader using ASI Manager.

Texture editor for GTA V
The powerful OpenIV texture editor now supports .ytd GTA 5 texture files. Now you can freely edit any texture file with a .ytd extension using all the editor's capabilities.

Fragment Models Viewer
The model fragment viewer now supports .yft files from Grand Theft Auto V. This utility will allow you to view GTAV vehicle models.

Critical bug fixed
Some critical errors that caused the program to crash and close have been fixed. Now OpenIV will freeze much less.

OpenIV is a multi-purpose editor and archive manager for PC versions of Grand Theft Auto V, Grand Theft Auto IV/EFLC and Max Payne 3.

What's new in OpenIV 3.1:
GTAV: pedpersonality.ymt support
XML Syntax validation in OpenIV Text Editor
Full change log http://openiv.com/?p=1483

What's new in OpenIV 3.0:
GTA V for PlayStation 4 support
GTA V Vehicles animations player
Proper multichannel audio support
openFormats support for YVR
support for new shaders in openFormats for GTA V models.
Full change log http://openiv.com/?p=1393

What's new in OpenIV 2.9.2:
First time since 2015, we have updated OpenIV.ASI – our plugin, which provides mods support for Grand Theft Auto V. The latest version of GTA V has some non-critical changes in the code, which affected by OpenIV.ASI, and we made similar changes in our code. Without those changes in OpenIV.ASI, your game had crash during loading screen in some very specific scenario, only when you have Simplified Chinese language selected in game. Use ASI Manager to update OpenIV.ASI in your game folder.
We fixed an issue where sometimes OpenIV crashes while renaming folders inside archives.
We fixed an issue where import of texture image with 2×2 sizes was impossible due to infinite loading.
We fixed an issue where files were not shown in OpenIV after they were drag-and-dropped in game folder using Windows File Explorer.

What's new in OpenIV 2.9.1:
Open folder: You now can open folders the same way as archives. Use menu “File > Open folder...” and select folder you want to open. Selected folder will appear at the end of the list in navigation tree.
Delete confirmation dialog: OpenIV will now show you delete configuration dialog, it will help you to avoid accidental removal of game files. You can disable this feature in OpenIV configuration.
Grand Theft Auto V
We added support for carvariations.ymt file
We added support for vfxvehicleinfo.ymt file
You can edit those files using inbuilt OpenIV Text editor or export them to META/XML format.
Grand Theft Auto IV
We fixed an issue where wrong High Level Code was generated in SCO Viewer.
General changes, improvements, and fixes
We fixed an issue where it was impossible to use context menu on travel buttons (Back/Forward) when history list contain many items.
We fixed an issue where some users might get “Unable to initialize Windows DirectX subsystem” fatal error message.
We added the ability to use keyboard arrow keys to navigate through shaders information in models viewer.
We made minor visual changes in “More information” dialog in models viewer.
We fixed an issue where users might see “Confirm edit mode” dialog while creating archive in edit mode.
We changed keyboard shortcut for creating new archive from “Ctrl + N” to “Ctrl + Shift + N”.
We added ability to use “Ctrl + N” keyboard shortcut for creating new archive in current location (Same as “Ctrl + D” for folder).
We fixed an issue where status bar does not updates when items are added or removed.
We fixed an issue resulting in unexpected behavior when double-clicking on group header in file list.
You now can use “Shift + Delete” keyboard shortcut for permanently deleting files while using Recycle Bin (This works for files on disk not for files in archives).
We fixed an issue resulting in “Edit mode” button become disabled in specific scenario.
We improved support for Junctions or Symbolic links. You now will be able to use global search while your game folder is Symbolic links.
We changed the way how Size column is displayed in file list. Now it works just like Windows File Explorer.
Some more changes were made, they are minor or are not worthy of mention.

Version 2.9:
Inbuilt Text Editor
Support for .ymap, .ytyp, _manifest.ymt, carcols.ymt and levels.ymt
Improved openFormats for Grand Theft Auto V
Search improvements

And more

Version 2.8:
openFormats for Grand Theft Auto V models
Package Installer improvements
Administrator mode notification
UI Improvements and bug fixes
And more

Version 2.7:
openFormats development
Brand new Package Installer
Improved support for "mods" folder in Grand Theft Auto V
Bug fixes and minor improvements

Version 2.6.4:
Audio Exporting
Ability to export audio files to .wav format

Audio Editing
Ability to edit audio files (.awc) like weapon and vehicle sounds

Version 2.6.3:
ASI Manager
New tool named “ASI Manager” allows you to easily install or uninstall ASI loader and our plugins for GTAV.

OpenIV.ASI 1.1
New version of OpenIV.ASI gives you the ability to keep original GTAV files safe and put mods into special “mods” folder. Just put archive (for example, x64a.rpf) you want to mod into “mods” folder and made changes in that copy. OpenIV.ASI will force game load your archives form “mods” folder. In addition, if you want to switch back to original files just remove OpenIV.ASI and ASI Loader using ASI Manager.

Texture editor for GTA V
Powerful OpenIV texture editor now have support for GTA V .ytd texture files. You are free to edit any .ytd files using all features we have.

Fragment Models Viewer
Finally, OpenIV fragment models viewer got support of GTA V .yft files. This will allow you to view GTAV vehicles models.

Critical bug fixed
We also have fixed some critical issues in our code. Now you have less chance to corrupt your files.

Finally, after almost a year and a half of waiting, the gaming community has waited for the moment when it became possible to create and install custom modifications on GTA 5. Some of them are installed by simply adding files to the root folder of the game, but for a huge number of modifications it is necessary to change files in the game archives, which cannot be done without using special programs. One of these programs, and perhaps the most convenient, is Open IV. This super useful tool will allow you to easily edit hidden game archives, add and change files in them, and all you need to do to get all these features at your disposal is download Open IV. In addition, Open IV is a very convenient and probably necessary tool for developing mods.

Let's imagine, for example, that we need to install a texture that replaces the standard weapon model. How can we do this without OpenIV? Of course, no way, but with the help of Open 4 we can do this in two clicks. With the same success, you can easily add new files and folders to the game archives, which provides the widest scope for modding and allows you to do almost anything with the game. It's safe to say that Open 4 is an absolutely necessary program for any fan of GTA 5 modifications.

We invite you to download the latest version of Open 4 from our website.

How to use OpenIV

Click on the OpenIV icon to launch the program, select GTA 5, then your system and wait for the download to complete.

You have entered the program menu. Here everything is similar to a standard explorer, allowing you to see all the files, archives and folders in the root directory of GTA 5. You can freely navigate, open any archive, however, in order to change or rebuild archives, as well as add or delete files, you need to enable the mode editing as shown in the screenshot.

Next, follow the instructions for installing your modifications. Most often you just have to replace texture or script files; much less often you have to add new folders and files to game archives. In any case, the first rule of using OpenIV is to make backups of all replaced files. In editing mode, the program automatically saves all the changes you make, so if you do something wrong and don’t have the source files at hand, you’ll have to reinstall GTA 5 again.

That's all, now you can easily install any modification, for this you only need to use the excellent Open 4 program.

Open IV for PC version of GTA 5 is an editor that has many functions. Thanks to this editor, the player has ample opportunities to edit textures, models, texts and, in general, all game files - it all depends on your level of knowledge about modding. Additionally, Open IV is required to run some add-ons.

Starting with version 2.6, the developers have significantly increased the scope of applications with which you can interact:

Version 2.6

• There is now access to editing files.

Version 2.6.3

• Fixed critical errors and program freezes.
• Fragments Models Viewer is an application through which you can look at vehicle models in gta 5 that have the *.yft extension.
• Texture Editor is a very powerful texture editor that makes it possible to edit *.yfd texture files.
• Open IV.ASI 1.1 – Now the original game files will be safe, because all add-ons are now stored in a separate folder – “Mods”. Just move the add-on file to the mods folder and start the game, then the editor will do everything itself and GTA 5 will start with all the modifications made. If you suddenly want to launch the game without add-ons, just remove Open IV.ASI and ASI Loader using ASI Manager.
• ASI Manager is a manager that will help you remove or install ASI Loader and related plugins.

Version 2.6.4

• Audio Editing – editing of files with the *.awc extension, which are audio recordings of the sounds of weapons and vehicles, is now available.
• Export audio – adds the ability to remove audio recordings in *.wav format from the game.

How to use OPEN IV for GTA 5

• Download and install the Open 4 program for GTA 5.
• After the initial launch, configure the program to work with your copy of the game.
• Go to Tools, then to ASI Manager or use the ASI Manager button on the toolbar.
• Install ASI Loader and OPENIV.ASI.
• Go to the root directory of the game and create a new folder there called “mods” (name without quotes, letters in lowercase).
• Next, transfer the modification archives with the RPF extension to the mods folder. For example, if you need to change the update/update.rpf archive, the path will look like this: Grand Theft Auto V/mods/update/update.rpf
• If you need to return to files with original characteristics, then simply remove OpenIV.ASI via ASI Manager. Thus, there is no need to constantly edit game resources by deleting the mods folder.