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M4V to MP4
Turn Apple's M4V videos into standard MP4 files that play everywhere, without losing a single pixel when the codec already fits
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No quality loss: If the M4V contains H.264, HEVC or AV1, the streams are copied into the MP4 container unchanged. There is no second encoding.
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Fast: A rewrap takes seconds even for a two-hour film, because the video is not decoded.
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Plays on everything: The MP4 opens on Android, Windows, smart TVs, game consoles and in browsers that refuse the .m4v extension.
Container conversion
Why M4V to MP4 is usually a rewrap, not a re-encode
M4V is Apple's name for an MP4 container with a few extra features such as chapter tracks and, for iTunes Store purchases, FairPlay copy protection. For unprotected files the video and audio inside are the same H.264 and AAC that MP4 uses, so the converter only has to write a new container around them.
How to use Converter App
1
Upload the M4V
Choose the file or import it from Google Drive. Large files from screen recorders or Handbrake are fine.
2
Rewrap or encode
Compatible streams are stream-copied. Only unusual codecs trigger an H.264 re-encode at constant quality.
3
Download the MP4
Use the file on any device or upload it where .m4v is not accepted.
Key features
Bit-identical video
The stream copy mode writes the exact same video and audio data into the MP4; a checksum of the streams matches the original.
Chapters and subtitles kept
Chapter markers and text subtitle tracks are carried over as MP4 chapter and mov_text tracks.
Multiple audio tracks
Films with several languages or a commentary track keep all of them.
Fallback encoding
Should the M4V contain MPEG-4 Part 2 or another codec MP4 players dislike, it is encoded to H.264 at CRF 23 automatically.
Experience & privacy
Built for reliable video conversion.
Backed by 10+ years of engineering expertise in large-scale data and scientific computing, it’s built for real-world video workflows that require uncompromised output quality, dependable processing of large files, and reliable, high-level performance.
Trusted by Users
Rated 5 stars on Trustpilot for speed, reliability, and ease of use.
User trust
Academic Use
Referenced in published research and used for interview transcription and qualitative data analysis.
Research use
Where M4V files come from
You will meet .m4v on the Mac and iPhone far more than anywhere else. QuickTime Player, iMovie and the iOS screen recorder can produce it, Handbrake offers it as an output option for Apple-compatible files, and every film bought on iTunes used it. Outside the Apple ecosystem the extension is a nuisance: Windows Media Player, many Android galleries, smart TVs and several web upload forms reject the file although the data inside is ordinary H.264.
Rewrap versus re-encode
Our converter probes the file first. When the video codec is H.264, HEVC or AV1 and the audio is AAC, MP3 or AC-3, everything is copied into a new MP4 with the -c copy approach, so the conversion is lossless and quick. Metadata, chapters and subtitle tracks are mapped too. Only if the codec is something MP4 players do not handle, for example MPEG-4 Part 2 or ProRes, is the video encoded to H.264 at constant quality 23 with AAC audio at 192 kbps. The result of either path is a file that plays on anything made in the last decade.
DRM and what the converter cannot do
FairPlay protected M4V from the iTunes Store carries encrypted streams. Encrypted packets can be copied into an MP4 container, but no player will decode them, and decrypting them would break the licence terms and the law in most countries. If your file plays only in Apple TV or the Music app and asks for an Apple ID, it is protected and cannot be converted. Apple's own apps are the only way to watch those purchases.
Checking the result
Open the MP4 in VLC and look at Tools, Codec Information: the codec should read H264 or HEVC and the resolution, frame rate and audio tracks should match the original. If the video stutters in a browser, the file was probably encoded with an unusual profile; a re-encode with our MP4 converter at a standard high profile fixes that. For most users the rewrapped file simply plays, and that is the whole point.
FAQ
Frequently Asked Questions
Is M4V the same as MP4?
Technically almost. Both are based on the MPEG-4 Part 14 container. Apple uses .m4v for videos made with iTunes, QuickTime and the iOS screen recorder, and the container may hold chapter data and DRM. Many programs and devices simply do not recognise the extension, which is the practical reason to convert.
Can I convert iTunes movies I bought?
No. Purchased or rented iTunes films are protected with FairPlay DRM. The converter cannot decrypt them and the result would be unplayable. Only unprotected M4V files, such as home recordings, exported projects and screen captures, can be converted. This is a legal restriction as much as a technical one.
Why is converting so fast?
Because for H.264 and HEVC sources nothing is decoded. The converter reads the packets from the M4V and writes them into a fresh MP4 with a new index. Re-encoding a two-hour film would take many minutes; a rewrap takes about as long as copying the file.
Could I just rename the file to .mp4?
Often that works, and if it does the result is the same as ours. It fails when the file contains features the player does not expect, when the index is at the end of the file (streaming players want it at the front) or when the codec is not standard. The converter rebuilds the container properly and moves the index to the start so the video starts instantly in browsers.
Does HEVC (H.265) stay HEVC?
Yes. HEVC is allowed in MP4 and is stream-copied with the hvc1 tag that Apple devices and modern browsers expect. If your target device is older and only plays H.264, convert the MP4 again with a dedicated HEVC to H.264 tool.
What happens to my files afterwards?
The upload and the converted MP4 are deleted automatically within two hours. Nobody views them and they are never used for anything else.