FFmpeg powered
Solid conversion through FFmpeg, bundled with release builds so it works out of the box.
Desktop media converter
Transmux
Convert video and audio to any format you need. Drag in a file, pick an output format, and let FFmpeg do the work — with live progress tracking.
movie.mkv
Output format
MP4 (H.264 / AAC)
Subtitles
Include in output
What it does
Convert once, play anywhere.
Wide format support
MP4, WebM, MKV, AVI, MOV, MP3, AAC, FLAC, OGG, WAV, Opus — video and audio in one tool.
Smart format detection
Automatically suggests the best output format based on your input codec — H.264+AAC → MP4, VP9+Opus → WebM.
Flexible subtitles & audio
Choose which audio and subtitle tracks to include, extract to separate files, or skip entirely.
Smart conversion modes
Stream copy for instant conversions or full re-encode for quality. Auto-detects when source matches target and skips needless re-encoding.
Conversion history
Track all conversions with timestamps. Quickly access output folders and review past operations.
Keyboard shortcuts
Power-user shortcuts: Ctrl+O (open), Enter (convert), Spacebar (toggle mode), ? (help) — or use your mouse.
Live progress
Real-time speed and ETA feedback while converting, with cancel support at any point.
Latest release
Get Transmux for Ubuntu and Windows
Release builds are distributed as a Debian package for Linux and a single-file installer for Windows.
Download the latest release for your platform:
FFmpeg is bundled with Windows releases. Linux requires ffmpeg installed via sudo apt install ffmpeg
