DuME

DuME, the Duduf Media Encoder is a professional, fast, versatile and easy-to-use Free and Open Source Media Encoder and Streamer.

Key Features

Multiple inputs, multiple outputs

A single job can include multiple inputs and outputs, which can be both files or live streams. DuME can be used for streaming as well as for rendering and transcoding files, and to easily combine and mix different streams.

Read and write to any video and audio format

OpenEXR, AVC h.264, HEVC h.265, VP8/9, ProRes, HAP, .mov, .mp4, .webm…

Thanks to FFmpeg, DuME can read and write to and from almost any existing format, including image sequences and openEXR files. The most common formats, like AVC h.264, HEVC h.265, VP8/9, ProRes, HAP… (contained in .mov, .mp4, .webm…) are natively supported and come with intuitive fine-tuning controls and carefully crafted and efficient presets for the most common needs.

DuME natively and automatically handles color management for most formats, but also includes OCIO to fit in professionnal color-managed pipelines using OpenEXR files.

Rendering

Filters and adjustment

Preview and real-time stream

DuME can preview a still image taken from your streams at any time so you can precisely adjust your values, but also include a media player to quickly preview any node or live-stream the result of your graph. But keep in mind DuME is a lightweight media encoder, not a full-featured compositing app 😉

Automation

DuME can easily fit into any existing pipeline and comes with many options to automate it.
Use the Command-Line interface to launch jobs right away, or communicate through a TCP Socket to completely control any running instance of DuME (or just start your instance).
To make this even easier, use the Python or Adobe ExtendScript wrappers to work with DuME from any DCC application using the language you’re used to.
All nodes can save and use presets, and DuME includes pre-made, carefully hand-crafted presets for the most common formats and operations.

Performance: Fast and efficient

DuME benefits from the very fast FFmpeg encoders and filters, and can use your GPU and multiple threads to output your streams in an instant and support real-time streaming.

DuME Screenshot showing a graph and comparing two 3D renders

Concept and future

The goal is for DuME to be as easy to use as possible even for beginners, but without compromise on functionality for advanced users.

To achieve this goal, the development of the application follows these guidelines:

Future

These are some of the features we’d like to develop as soon as possible, thanks to your support.

As DuME is Free and Open-Source Software, we need your help to implement these ideas and continue the development! Donate now or become an RxLab. associate member!

License

Software

Copyright (C) 2019-2025 Nicolas Dufresne and Contributors.
This program is free software; you can redistribute them and/or modify them under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with DuBuilder. If not, see http://www.gnu.org/licenses/.

GNU GFDL

This Documentation

Copyright (C) 2025 Nicolas Dufresne and Contributors.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled “Documentation License”.

GNU GFDL