rMux
Trim, convert, and merge video
Only for Mac
Free
Mac
rMux is the essential video editor for your Mac: open a clip, trim what you don't need, pick a format, and save. Whenever it can, it works without re-encoding, so it's lightning fast and doesn't lose a shred of quality.
TRIM WITHOUT LOSING QUALITY
• Set a start and end point on the timeline and save just the part you need.
• Keyframes are marked on the timeline: the video is copied as is, with no re-encoding, in seconds.
• Switch containers (MP4, MOV, MKV, WebM, AVI) while leaving video and audio untouched.
CONVERT YOUR WAY
• H.264 and HEVC with your Mac's hardware acceleration, or AV1, VP9, and ProRes.
• Constant quality, two-pass bitrate, or a target file size.
• Advanced options: level, keyframe interval, track title.
EVERY TRACK UNDER CONTROL
• For each audio track, choose to copy it, convert it (AAC, AC3, MP3, Opus, FLAC, PCM), or leave it out.
• Adjust the volume in dB and fix audio/video delay, even without re-encoding.
• Edit the language, title, and default track, or extract a track to its own file.
SUBTITLES YOUR WAY
• Import SRT and ASS/SSA files, even with legacy character encodings.
• Add them as a track viewers can turn on, or burn them into the picture with the size, color, and position you choose.
• Shift the timing, edit individual lines, and save the result as SRT.
• Extract subtitles already in the video.
CROP AND CORRECT
• Crop right on the preview, resize, rotate, and flip.
• Deinterlace, denoise, sharpen, correct color, and apply .cube LUTs, with a before/after preview.
• Save a frame as an image or extract the video without its audio.
MERGE VIDEOS
• Line up several clips and join them into a single file.
• If they match, rMux joins them without re-encoding; otherwise it conforms them to the first clip's resolution and frame rate.
WORK IN THE BACKGROUND
• Queue several exports and keep working: the queue carries on even if you close the window.
• Progress on the Dock icon and a notification when it's done.
PRIVATE AND NATIVE
• Everything happens on your Mac: no uploads, no account, no tracking.
• Your original is never modified: rMux always creates a new file.
• Open videos by dragging them into the window or onto the Dock icon, or with "Open With…" in Finder.
• Light, dark, or automatic appearance; customizable keyboard shortcuts; interface in English and Italian.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
rMux 1.0.1 fixes a number of export and playback issues:
• Quality with hardware encoding now follows the slider: the default setting used to produce low-quality files.
• HEVC video in MP4 and MOV now opens in QuickTime and Finder.
• Audio track settings (channels, sample rate, language, title, delay) are now always applied.
• If the chosen format can't hold a codec, rMux tells you before starting.
• You can no longer overwrite the original video by mistake.
• "Preview selection" stops at the Out point, and the Viewer plays the audio track that will be exported.
Plus many more fixes for subtitles, .ts files, and LUTs.
The developer, Emanuele Spagnoli, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Emanuele Spagnoli
- Size
- 21.6 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English and Italian
- Age Rating
13+
- 13+
- Copyright
- © dimpemekug