Free online M4V→MKV converter. Fast, private, no sign-up.
Converting M4V to MKV is one of those small tasks that should be instant and free — and here it is. Drop in your M4V file (a .m4v) and download a ready-to-use MKV file (a .mkv) — no software to install, no account to create, and no watermark on the output.
M4V is a video container. Converting it changes how the video and audio streams are packaged so the clip plays where you need it.
MKV (Matroska) is a flexible open container that can hold almost any codec plus multiple audio tracks and subtitles, popular for archiving.
The usual reason to convert M4V to MKV is file size or quality: MKV fits the job better, whether that means a smaller download, a cleaner edit, or broader support. The conversion runs through ffmpeg, the industry-standard media engine, re-encoding the streams with sensible high-quality defaults so the result plays cleanly on your target device.
Typical uses: preparing assets for a website, attaching a file someone else can definitely open, or standardising a folder of mixed files into one format.
Privacy is the default here. Your M4V file is uploaded over an encrypted connection, converted, downloaded the moment it's ready, and then deleted automatically a short time afterwards. We never keep your files, never build a library of your content, and never make you sign up to download the result.
Ready? Use the converter above, or explore related conversions: turn M4V into a different format, or convert another format into MKV. Everything on Convert Me Pls is free, unlimited and watermark-free.
Yes. Convert Me Pls is completely free with no sign-up, no file-count limits and no watermarks added to your output.
Your files are uploaded over an encrypted connection, converted, and then deleted automatically a short time afterwards. We never keep your files and never build a library of your content.
We use the best available encoders (libvips, ImageMagick and ffmpeg) at high-quality settings for the cleanest possible result.
Conversions run on our servers and support large files comfortably; very large media is processed in a streaming pipeline.