Convert M4V to MKV Online
DRM-protected M4V files only play on authorized Apple devices and iTunes; unprotected M4V is just MP4 with a different extension. Converting to MKV gives you a key advantage: the most flexible container: unlimited audio tracks, subtitle formats (srt, ass, pgs), chapter markers, and attachment files in a single open-standard file. MKV is best for archiving high-quality video with multiple audio tracks, subtitle streams, and chapter markers in one file.
Why Convert M4V to MKV?
DRM-protected M4V files only play on authorized Apple devices and iTunes; unprotected M4V is just MP4 with a different extension β converting to MKV overcomes this by providing the most flexible container: unlimited audio tracks, subtitle formats (srt, ass, pgs), chapter markers, and attachment files in a single open-standard file
MKV is the right choice when you need to: archiving blu-ray rips with original audio tracks (dts-hd, truehd) and subtitle streams
Gain broader compatibility β MKV works with VLC, MPC-HC, mpv, Plex, Kodi, Jellyfin; partial support on Android and some smart TVs
Your M4V files were created for converting drm-free m4v files to standard mp4 for universal playback, but now you need a format suited to different workflows
M4V vs MKV β Format Comparison
Apple MPEG-4 Video (.m4v)
Matroska Video Container (.mkv)
How to Convert M4V to MKV
Upload your M4V file
Drag your .m4v file onto the upload area or click to browse. We accept M4V files up to 2 GB.
Choose MKV as output format
Select .mkv (Matroska Video Container) from the format list. Configure any format-specific settings to match your requirements.
Convert and download
Click Convert and wait for processing. Your MKV file will be ready to download in seconds. The result is optimized for archiving high-quality video with multiple audio tracks, subtitle streams, and chapter markers in one file.
Frequently Asked Questions
Is the M4V to MKV conversion lossless?
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When both formats support lossless data, the conversion preserves all content. Container-agnostic: supports any codec (H.264, H.265, AV1, VP9) at any quality level.
How large will my MKV file be compared to the original M4V?
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M4V files are typically 200 MB β 5 GB, while MKV files are typically 50 MB β 30 GB. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted MKV file?
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MKV is compatible with: VLC, MPC-HC, mpv, Plex, Kodi, Jellyfin; partial support on Android and some smart TVs.
What is the maximum file size I can convert?
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PureConverter accepts M4V files up to 2 GB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between M4V and MKV?
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M4V (Apple MPEG-4 Video) is best for video content purchased or rented from the apple itunes store. MKV (Matroska Video Container) is best for archiving high-quality video with multiple audio tracks, subtitle streams, and chapter markers in one file. Key tradeoff: M4V's advantage is supports apple fairplay drm, enabling content distribution through the itunes ecosystem with copy protection, while MKV's advantage is the most flexible container: unlimited audio tracks, subtitle formats (srt, ass, pgs), chapter markers, and attachment files in a single open-standard file.
Pro Tips for M4V to MKV Conversion
Review the output MKV file to ensure all formatting and content transferred correctly from your M4V source
Keep a backup of your original M4V file β while our conversion is reliable, having the source is always recommended
MKV works especially well for: storing anime with multiple subtitle tracks (soft-subs) for different fan translations
Did you know? Matroska is named after Russian nesting dolls (ΠΌΠ°ΡΡΡΡΠΊΠ°) because the format is based on EBML, which nests data structures inside each other like layers of a doll.
Ready to Convert?
Upload your M4V file above and get your MKV in seconds. Free, fast, and secure.