ReMux Bot
Convert MKV to MP4 for iPhone, Apple TV and AirPlay — no re-encoding, no quality loss, just a few clicks.
Version 2.0 · $2.99 · macOS 14+ · Intel & Apple Silicon
New in 2.0
The biggest update since launch.
Subtitle support
Preserve SRT and ASS subtitles when converting to MP4.
Apple TV-ready badge
See at a glance whether your output will play natively on Apple TV and iPhone.
Smart compatibility checks
Get warned before convert if your codec won't fit your chosen container.
Liquid Glass interface
Redesigned for macOS Tahoe, with a graceful fallback on macOS 14+.
Now in 10 languages
Fully localized in English, Simplified Chinese, Japanese, Korean, German, French, Italian, Spanish, Brazilian Portuguese and Russian.
Better diagnostics
When something goes wrong, view and copy the exact FFmpeg log.
Features
Everything you need
Experience hassle-free video conversion with ReMux Bot, your MKV files are smoothly converted to MP4 without any loss in quality. ReMux Bot makes file compatibility issues a thing of the past.
Fast Performance
Don’t wait around for your videos to convert with transcoding. ReMux Bot maximizes efficiency, rapidly remuxing your videos up to 120× faster than transcoding
GPU Accelerated
Powered by the latest advancements in video processing technology, ReMux optimizes your videos for playback on any device, enhancing both visual quality and compatibility.
Compatible with x264 and x265 Video Files
With x264 and x265 support, your video files will be remuxed to support AppleTV and iOS playback at highest resolutions, and maximum device compatibility.
Works 100% Offline
Your files never leave your computer. 100% private.
Frequently asked questions
Does ReMux Bot re-encode my videos?
No. It remuxes: the existing video and audio streams are copied into a new MP4 container rather than re-compressed. Because nothing is re-encoded there is no loss in quality, and conversion runs up to 120× faster than transcoding.
Will the converted files play on iPhone, Apple TV and AirPlay?
Yes — that is what the conversion is for. Version 2.0 also shows an Apple TV-ready badge so you can see at a glance whether the output will play natively, and warns you before converting if your codec will not fit the container you chose.
Are my video files uploaded anywhere?
No. ReMux Bot works 100% offline and has no network functionality at all. Your files are read and written on your own Mac and never leave it, and the app collects no data or telemetry.
Which video codecs are supported?
H.264 (x264) and H.265 (x265) sources, remuxed at their original resolution for Apple TV and iOS playback and maximum device compatibility.
Are subtitles preserved?
Yes. Version 2.0 preserves SRT and ASS subtitles when converting to MP4.
What does ReMux Bot cost, and what does it require?
It is $2.99 on the Mac App Store. It requires macOS 14.0 or later and ships as a universal binary, so it runs natively on both Apple Silicon and Intel Macs.
Is the app available in my language?
It is fully localized in 10 languages: English, Simplified Chinese, Japanese, Korean, German, French, Italian, Spanish, Brazilian Portuguese and Russian.
What happens if a conversion fails?
You can view and copy the exact FFmpeg log for the failed conversion, so the cause is visible rather than hidden behind a generic error.
Ready to dive in?Download now and start your journey.
Available on MacOS App Store