Convert M4V to MTS

M4V to MTS converterFREE

Drop a .M4V file here

or pick one - we convert it to .MTS and give you the file to download

How to convert M4V to MTS

DRM-protected iTunes .m4v purchases cannot be converted - the Apple FairPlay lock must be removed first, which is illegal in most countries.
Re-encoding to AVCHD always causes some quality loss; a lower FFmpeg CRF value (18-20) keeps the loss minimal at the cost of a larger file.
AVCHD requires H.264 video at 720p or 1080i/1080p with AC-3 or PCM audio - 4K or SD sources will not produce a valid .mts stream without scaling.

Can I convert a purchased iTunes M4V to MTS?

No - iTunes purchases use Apple FairPlay DRM, which blocks all conversion tools including FFmpeg.

Will the video quality change after conversion?

Yes, unless you use a remux tool like tsMuxeR that copies the H.264 stream directly; FFmpeg re-encoding always loses a little quality.

Why is MTS not good for general use?

MTS is an AVCHD recording format with no support for subtitles, chapters, or metadata; .mp4 handles all of these and plays on far more devices.

My authoring software rejects the converted MTS file - why?

AVCHD enforces strict specs: H.264 at 720p or 1080i/p, AC-3 audio, within set bitrate limits - a 4K or SD source needs additional scaling to comply.

Learn about the formats: .M4V · .MTS