M4V

Writable

video

file format

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FFmpegOpen sourcereads and writes · LGPL-2.1-or-later / GPL-2.0-or-later
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
HandBrakeOpen sourcereads · GNU General Public License, version 2.0
jPlayerOpen sourcereads · MIT License
ACDSeereads · proprietary license
Adobe Premiere Proreads · proprietary license
IrfanViewreads · freeware
MAXQDAreads · proprietary license
Microsoft Photosreads · Microsoft end-user license agreement
Movavi Video Editorreads · proprietary license
Xilisoft Video Converter 3reads

To	With	Fidelity	Command and losses
FLAC (Free Lossless Audio Codec) 1.2.1	FFmpeg	Partial	`ffmpeg -i in.m4v out.flac` Audio track only: the video is dropped.
Waveform Audio	FFmpeg	Partial	`ffmpeg -i in.m4v out.wav` Audio track only: the video is dropped.
Matroska 1-4	FFmpeg	Lossy	`ffmpeg -i in.m4v out.mkv` Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.
MPEG 1/2 Audio Layer 3	FFmpeg	Lossy	`ffmpeg -i in.m4v out.mp3` Lossy audio only: the video is dropped.
MPEG-4 Part 14	FFmpeg	Lossy	`ffmpeg -i in.m4v out.mp4` Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.
Ogg	FFmpeg	Lossy	`ffmpeg -i in.m4v out.ogg` Lossy audio only: the video is dropped.
WebM	FFmpeg	Lossy	`ffmpeg -i in.m4v out.webm` Re-encoded with lossy codecs by default; try `-c copy` to remux without re-encoding when the codecs fit the container.

From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), Wikidata. Updated 2026-10-20.