Convert M4V video to MP4 online for free.
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Checking files and selected output formats.
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MP4 (with H.264 video and AAC audio) is the universal video format — plays on every phone, TV, browser, and video-editing app. Convert to MP4 when uploading to YouTube, Instagram, TikTok, or any platform that doesn't specify otherwise. MP4 is the default output for smartphone recording and the expected format for shared / embedded video.
M4V is Apple's proprietary MP4 variant, primarily used for iTunes Store purchases. The container is nearly identical to MP4 — same H.264 video, same AAC audio, same ISO Base Media File Format structure. The key difference is DRM: iTunes-purchased M4V files use Apple FairPlay encryption. DRM-free M4V files can often be converted by simply renaming the extension. DRM-protected files require the authorized iTunes account for playback and cannot be converted without DRM removal.
Convert DRM-free M4V files to MP4 for playback on non-Apple devices and platforms that don't recognize the .m4v extension. If the M4V is from iTunes and has DRM, the conversion will fail — the file can only be played through authorized Apple software.
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | M4V | MP4 |
|---|---|---|
| Full name | iTunes Video (MPEG-4) | MPEG-4 Part 14 |
| Year introduced | 2003 | 2001 |
| Developer / standard body | Apple | MPEG |
| MIME type | video/x-m4v | video/mp4 |
| File extension | .m4v | .mp4 / .m4v |
| Compression | H.264 | H.264 or H.265 codec |
| Color / data depth | 8-bit | 8/10-bit |
| Max dimensions / size | Codec-dependent | Codec-dependent (up to 8K) |
| Transparency | No | No |
| Animation | No | No |
| Standard / specification | Apple (MPEG-4 variant) | ISO/IEC 14496-14 |
| Best for | Apple TV, iTunes movie purchases, iOS video | Universal video compatibility — plays on every device |
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert M4V files to MP4.
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