M4V to MKV Converter

Convert M4V to MKV online. M4V and MKV are containers, while the video and audio codecs live inside them. Free batch processing with no signup or watermark.

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What changes when you convert M4V to MKV?

M4V and MKV are containers, while the video and audio codecs live inside them. Compatible streams may be copied; otherwise they are re-encoded for the selected MKV settings.

For the widest playback support, check that the selected video and audio codecs are accepted by the device or service that will receive the MKV file.

Add multiple videos and adjust the available video and audio codec settings before processing.

Open the finished MKV file and check fine details, layout and compatibility in the app where you plan to use it.

What is a M4V file?

M4V is Apple’s take on the MP4 video container, used by iTunes for films and TV shows. It is almost identical to MP4, but store-bought M4V files can carry DRM copy protection; renaming to .mp4 often works, otherwise a real conversion is needed.

How to open a M4V file

M4V plays in QuickTime, iTunes/Apple TV and VLC; for wider support convert it to MP4.

What is a MKV file?

MKV (Matroska) is a flexible open container that holds high-definition video, multiple audio tracks and subtitles in one file. It is popular for movies and archiving, but is not natively supported by every device or browser.

How to open a MKV file

MKV plays in VLC and most modern media players; some phones, browsers and TVs need it converted to MP4 first.

Frequently asked questions

Is it free to convert M4V to MKV?

Yes. There is no sign-up, subscription or watermark on the converted file.

What happens to quality when M4V becomes MKV?

M4V and MKV are containers, while the video and audio codecs live inside them. Compatible streams may be copied; otherwise they are re-encoded for the selected MKV settings.

Which conversion options are available on this page?