M4V to MOV Converter

M4V vs MOV: Which One Do You Actually Need?

Both containers come from Apple and both usually hold the same H.264 video and AAC audio, which is why this conversion confuses people: it looks like a rename with extra steps. It is not. .m4v is Apple's MPEG-4 flavour, the extension Apple attached to store video when it launched downloadable TV episodes and music videos with iTunes 6 in October 2005, and it can carry FairPlay copy protection. .mov is QuickTime, Apple's 1991 editing container and the format the ISO base media file format was later built on — which makes MOV the ancestor of the very MP4 layout your M4V uses. Short answer: convert to MOV when an editor, a capture tool or a Mac-native workflow wants QuickTime, or when you want a track layout no one will mistake for store-bought content. Stay on M4V (or move to MP4) when your goal is playback and sharing.

M4V and MOV Side by Side

When to Stay on M4V (or Go to MP4 Instead)

• You only want to watch or share the file. A DRM-free M4V already plays anywhere MP4 does; converting to MOV gains you nothing and costs a re-encode.
• You are uploading somewhere with a strict format list. Most platforms name MP4 first — M4V to MP4 is the safer target.
• The file is a purchased or rented iTunes title. FairPlay encryption blocks every converter, this one included.
• You want the smallest possible file. MOV and MP4 hold the same H.264 bytes; neither container is inherently smaller, so use compression rather than a container swap.

When MOV Is the Right Move

• An editor or capture app asks for QuickTime. Final Cut Pro, iMovie, older Avid and Premiere setups, and plenty of Mac utilities treat .mov as the native case and .m4v as the exception.
• You need uncompressed audio. MOV carries PCM cleanly, so you can hand an editor a soundtrack with no second lossy generation — this page offers PCM in 16-bit (little- and big-endian), 24-bit and 32-bit as well as A-law and mu-law.
• You want the file to look unmistakably like your own footage. M4V still reads as "iTunes video" to some tools and colleagues; MOV does not carry that association or the possibility of DRM.
• You are changing codec anyway. If you are re-encoding to H.265, MPEG-4 or MJPEG for a specific device or tool, MOV accepts all of them here in one pass.

How to Convert M4V to MOV

1. Upload Your M4V File: Drag and drop the file onto the page or click "+ Add Files" to browse. The tool accepts .m4v and .mp4, and several files can be queued and converted with identical settings.
2. Set Video Codec and Audio Codec: Under Advanced Options, Video Codec is pre-selected as H.264 — the right answer for almost every MOV — with H.265, MPEG-4, MJPEG, MPEG-2 and a dozen legacy encoders available. Audio Codec is pre-selected as AAC; switch it to PCM 16-bit Little Endian if an editor wants uncompressed sound.
3. Choose a Quality Mode, Resolution or Trim (Optional): File Compression offers Quality Preset (pre-selected at "Very High (Recommended)"), Specific file size, Constant Bitrate, Variable Bitrate, Constant Quality with a CRF slider from 16 to 51, and Constraint Quality. Video resolution keeps the original size unless you pick a percentage, a height preset or an exact Width x Height, and Trim exports just a time range.
4. Convert and Download: Click Convert and save the .mov. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. No sign-up, no watermark.

Codec Choices Offered on This Page

Frequently Asked Questions

Can I just rename my M4V file to .mov instead of converting?

Sometimes it works, and that is exactly what makes it risky. QuickTime Player is forgiving and will often open a renamed DRM-free M4V, but the file still carries MPEG-4 structure and branding, and stricter tools — some editors, some ingest scripts, some hardware players — check what is inside rather than the extension and refuse it. A real conversion writes a genuine QuickTime container, so the tracks, timing and edit lists are laid out the way QuickTime-native software expects. Renaming is a gamble; converting is not.

Will converting M4V to MOV lose quality?

There is always a re-encode — this tool never copies the stream through untouched — so a small amount of detail is lost by definition. In practice the loss is hard to see: the default keeps H.264 as the codec at the "Very High (Recommended)" preset, which stays visually close to the source. If you want to be stricter, switch File Compression to Constant Quality and set a low CRF number. If you deliberately want a smaller file, that is what the lower presets, Specific file size and the bitrate modes are for. Nothing can add detail the M4V never had.

Does the MOV keep my audio track and stay in sync?

Yes. The AAC soundtrack is decoded and re-encoded into the MOV alongside the video, and the timing is preserved, so lip sync survives. Audio Codec is pre-selected as AAC, which is the sensible default; if you are handing the file to an editor and want no further lossy generation on the sound, choose PCM 16-bit Little Endian instead and accept the larger file.

Can I export ProRes from this page?

No. ProRes is Apple's licensed intermediate codec, and it is not among the codecs offered here — the Video Codec list runs from H.264 and H.265 through the MPEG-4 family, MJPEG and a set of legacy encoders. If your workflow specifically needs ProRes, generate it in Final Cut Pro, Compressor or another Apple-licensed tool. If you just need a high-quality intermediate that most editors accept, MOV with H.264 at a low CRF, or MOV with MJPEG, both work.

Can you convert a DRM-protected iTunes or Apple TV M4V?

No. Titles bought or rented from Apple can be wrapped in FairPlay, which ties decoding to devices authorised with the purchasing Apple ID. No online or desktop converter can open those files, so the job fails rather than producing something broken. Everything DRM-free converts normally: iMovie and Photos exports, QuickTime screen recordings, camera footage, and any .m4v that was never encrypted in the first place.

Why is my MOV bigger than the M4V I started with?

Because the container is not what determines size — the codec, bitrate and resolution are. If you left the Quality Preset high, the encoder gives itself enough bits to stay faithful to the source, and that can exceed the original bitrate for footage that was already tightly compressed. Choosing PCM audio adds substantially more, since uncompressed sound is many times the size of AAC. To pull the file down, drop the preset a step, set a Specific file size, or run the result through the MOV compressor.

Does converting to MOV remove interlacing or fix HDR colour?

No. This tool re-encodes the picture as it finds it: there is no deinterlacing step, so combing baked into interlaced footage stays exactly as it is, and there is no HDR tone-mapping, so an HDR source gets a plain colour conversion that can look washed out on a standard-range display. Handle both in an editor before converting. Frame-size changes are honoured, and if you scale to an aspect ratio that does not match the source, the padding bars are black.

Which is better for uploading to YouTube or a social platform, MOV or MP4?

MP4, in almost every case. Platforms transcode whatever you send, but MP4 is the format their documentation names, it is smaller to upload for the same picture, and it avoids edge cases with unusual MOV track layouts. Use MOV when the destination is an editor or a Mac application; use M4V to MP4 when the destination is an upload form. Going the other way — bringing QuickTime footage back into the Apple video ecosystem — is MOV to M4V.

How long do you keep my files?

Your M4V is uploaded over an encrypted connection, converted on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public. The practical constraint is upload time rather than anything on your machine: a long high-bitrate clip takes a while to send and to retrieve. If you only need part of the clip, set a Trim range before converting, or cut the source first with the video cutter.