Convert iPhone MOV to MKV for Plex, Jellyfin, and Home Theater
MKV (Matroska Video) is the preferred container for home media server libraries, Linux video workflows, and long-term video archiving. Converting iPhone MOV and Mac QuickTime recordings to MKV gives you a flexible, open-standard container with support for multiple audio tracks, subtitle streams, chapter markers, and full Plex/Jellyfin metadata compatibility.
How to Convert MOV to MKV
Click "Convert Now" to open the video converter with MOV → MKV pre-selected.
Drag & drop your MOV file or click Browse. Works with iPhone recordings and Mac QuickTime files.
FFmpeg.wasm repackages the video locally as MKV — no file is uploaded to any server.
Your MKV file downloads automatically, ready for Plex, Jellyfin, or Kodi.
iPhone Video in MKV: The Perfect Container for Media Servers
Home media server software — Plex, Jellyfin, Kodi, Emby — does accept MOV files, but MKV is universally recognized as the preferred container for libraries. MKV's metadata handling is richer: Plex identifies MKV content more reliably, Jellyfin's NFO metadata system works best with MKV, and Kodi's library management applies correct artwork and episode data more consistently to MKV files. Beyond media servers, MKV is the standard for high-quality video archives. Linux distributions use MKV as their video standard because it's fully open-source, unlike Apple's proprietary MOV container. For long-term archiving, MKV is future-proof: as an open standard, MKV files will remain readable by software 20 years from now. Converting iPhone MOV to MKV is the natural step when building a quality home media library.
When You Need MOV to MKV
- 📺 Add iPhone MOV recordings to Plex or Jellyfin media server library as properly indexed MKV
- 🐧 Convert Mac QuickTime recordings to MKV for Kodi, XBMC, or Linux media center playback
- 📦 Archive iPhone home videos in MKV for long-term, open-standard, future-proof storage
- 🎬 Convert MOV footage to MKV for Linux video editing in Kdenlive or Shotcut
- 📝 Store iPhone video in MKV to enable subtitle track embedding via MKVToolNix
MOV vs MKV — Format Comparison
MOV (QuickTime Movie (.mov)) and MKV (Matroska Video (.mkv)) use different compression and storage methods. The table below shows the key technical differences. Apple's default recording format. MOV containing H.264 is nearly identical to MP4. MKV supports multiple audio tracks, subtitles, and chapters. A pure container format.
Features
100% Private
Files never leave your browser. Powered by FFmpeg.wasm.
Lossless Remux
Container swap without re-encoding — instant and quality-perfect.
Free
No account, no fee, no watermarks. Ever.
Subtitle Support
MKV supports multiple subtitle tracks added via MKVToolNix.
Mobile-Friendly
Works on any device — phone, tablet, desktop.
No Install
Nothing to download. Works in any modern browser.
Key Questions About MOV to MKV, Answered
Direct answers structured for AI extraction, voice search, and featured snippets.
Will my video be re-encoded or just remuxed when converting MOV to MKV?
Almost always a remux. Matroska is a flexible, open container that accepts H.264, H.265, and even ProRes — the same codecs commonly found inside MOV files. Convertlo simply repackages the existing video and audio streams into an MKV wrapper, so the conversion is fast and lossless.
- H.264-in-MOV → MKV: remuxed, instant, zero quality loss
- H.265-in-MOV → MKV: remuxed, MKV natively supports HEVC
- ProRes-in-MOV → MKV: remuxed, though playback support for ProRes-in-MKV is limited to a few players
Is MKV better than MOV for Plex and Jellyfin media libraries?
Generally yes — Plex and Jellyfin treat MKV as a first-class format and match it to metadata databases more reliably than MOV, which those servers sometimes transcode on the fly instead of direct-playing.
- Plex, Jellyfin, Emby: designed around MKV with H.264/H.265 as the baseline format
- MOV files in Plex often trigger a software transcode, adding CPU load
- MKV preserves multiple audio tracks and subtitle streams that MOV files tend to lose
How much will the file size change going from MOV to MKV?
Since the conversion is typically a remux, the file size stays essentially the same — only the container wrapper changes, not the actual video or audio data.
- H.264/H.265/ProRes-in-MOV → MKV: size unchanged (remux)
- Any size difference comes from minor container overhead, not re-encoding
- To actually shrink the file, re-encode to H.265 or VP9 instead of just changing the container
Will MKV preserve the chapters and metadata from my MOV file?
Yes if the MOV has chapter markers — the converter carries them into MKV's native chapter format. Embedded title and date metadata transfers too, though some tag fields map differently between containers.
- QuickTime chapter tracks in MOV convert to MKV chapter entries cleanly
- Standard tags (title, date, comment) are remapped to Matroska tag equivalents
- MOV GPS and camera-specific atoms are usually dropped — MKV has no equivalent tags
Go Deeper: MOV to MKV Resources
In-depth articles to help you understand the formats, pick the right settings, and get the best results.