VTA Converter
FileFlip converts VTA files into 14 other formats entirely inside your browser, using Assimp compiled to WebAssembly. The VTA file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert a VTA file?#
- Drop your VTA file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert VTA files online?#
Yes, because nothing is uploaded. FileFlip converts VTA files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a VTA file#
FileFlip converts VTA into 14 formats with Assimp, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | 3D Models |
|---|---|
| File extension | .vta |
| FileFlip support | Read only, so it is a source rather than a target |
| Conversions available | 14 |
| Engines | Assimp |
| Downloaded to your browser | 11.2 MB on the first conversion, then cached |
What is a VTA file?#
A VTA file is Valve's vertex animation companion to SMD, storing per-vertex position deltas, most often a face's expressions, that studiomdl compiles alongside a skeletal SMD into the same model's shape-key data.
Export VTA alongside a skeletal SMD when a character needs shape-key style vertex animation, such as facial expressions, compiled into a Source or GoldSrc engine model.
Convert a VTA file's vertex deltas when moving a character's facial rig into a DCC tool or engine that expects blend shapes instead of Valve's flex system.
The VTA file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
VTA questions people ask#
What is a VTA file?
A VTA file is Valve's vertex animation format, storing per-vertex position deltas, most commonly a character's facial expressions, that pair with a skeletal SMD file. Studiomdl compiles the two together into the shape-key data of a GoldSrc or Source engine model.
How is VTA different from SMD?
SMD describes a skeleton, its skinned mesh, and joint-based animation, while VTA describes shape-key style vertex deltas, most often for facial expressions, that move vertices directly rather than through a bone. Both share the same text syntax and are compiled together by studiomdl.
What opens VTA files today?
Blender, through the community-maintained Blender Source Tools add-on, reads and writes VTA files as part of Source engine character workflows, and the Crowbar tool works with VTA data outside Valve's own SDK as well.