Remix utilizes Omniverse’s standard USD (for scenes) and MDL (for materials) file formats. Most content used in Omniverse needs to be converted into one of those standard formats so that your file can be used universally among the applications being used within the platform. You can view the Omniverse Format documentation to read further details about file formats and format conversions.

Asset Converter

Apps in Omniverse are loaded with the Asset Converter extension. With it, users can convert models into USD using the Asset Converter service. Below is a list of formats it can convert to USD.


Operating System


CPU Cores






Windows 10/11

Intel I7 or AMD Ryzen


16 GB

GeForce RTX 3060Ti

8 GB

512 GB SSD


Windows 10/11

Intel I7 or AMD Ryzen


32 GB

GeForce RTX 4070

12 GB

512 GB M.2 SSD

Extension Format Description
.fbx Autodesk FBX Interchange File Common 3D model saved in the Autodesk Filmbox format
.obj Object File Format Common 3D Model format
.gltf GL Transmission Format File Common 3D Scene Description
.lxo Foundry MODO 3D Image Format Foundry MODO is a type of software used for rendering, 3D modeling, and animation.


NVIDIA has developed a custom schema in USD to represent material assignments and specify material parameters. In Omniverse, these specialized USD’s get an extension change to .MDL signifying that it is represented in NVIDIA’s open-source MDL (Material Definition Language).

DL Texture Formats Accepted

MDL Materials throughout Omniverse can accept texture files in the following formats.

Extension Format Description
.bmp Bitmap Image File Common image format developed by Microsoft.
.dds DirectDraw Surface Microsoft DirectX format for textures and environments.
.gif Graphical Interchange Format File Common color constrained lossless web format developed by CompuServe.
.hdr High Dynamic Range Image File High Dynamic Range format developed by Industrial Light and Magic.
.pgm Portable Gray Map Files that store grayscale 2D images. Each pixel within the image contains only one or two bytes of information (8 or 16 bits)
.jpg Joint Photographic Experts Group Common “lossy” compressed graphic format.
.pic PICtor raster image format DOS imaging standard mainly used by Graphics Animation System for Professionals (GRASP) and Pictor Paint.
.png Portable Network Graphics File Common “lossless” compressed graphics format.
.ppm Adobe Photoshop Document The native format for Adobe Photoshop documents.

USD File Formats

Universal Scene Description (USD) is a versatile framework designed to encode data that can be scaled, organized hierarchically, and sampled over time. Its primary purpose is to facilitate the exchange and enhancement of data among different digital content creation applications.

Extension Format Description
.usd Universal Scene Description (Binary) This is the standard binary or ASCII file format for USD. It stores the 3D scene and asset data in a compact, binary form, making it efficient for storage and processing.
.usda Universal Scene Description (ASCII) This format stores USD data in a human-readable, ASCII text format. It's primarily used for debugging and as a reference because it's easier for humans to read and modify. However, it's less efficient in terms of file size and loading speed compared to the binary format.
.usdc Universal Scene Description (Crate) This is a binary format for USD, but it's optimized for high-performance data storage and retrieval. .usdc files are typically used as the primary format for asset storage and production pipelines, as they offer faster loading and saving times compared to .usd files.

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