WMV to M4V Converter

How to Convert WMV to M4V Online

1. Upload Your WMV File: Drag and drop into the dropzone or click "+ Add Files" to select one or more .wmv clips. Batch conversion is supported — every file inherits the same settings.
2. Pick Codec and Quality Preset: The output container is M4V. Set Video Codec to H.264 (the codec M4V is designed around) or H.265/HEVC if your target Apple devices are recent. Choose a Quality Preset — Very High (Recommended) for archive-grade output, High or Medium to shrink the file. Audio is transcoded to AAC, the standard for M4V.
3. Set Resolution, Bitrate, or Trim (Optional): Keep original or pick a Preset Resolution (4K, 1440p, 1080p, 720p, 480p), scale by Resolution Percentage, or enter custom Width x Height. Switch the compression mode to Constant Bitrate, Variable Bitrate, Constant Quality (CRF 0-51 for H.264/H.265), or target a Specific file size. Use Trim → Time Range to keep only the segment you need.
4. Convert and Download: Click Convert. Files are processed in your session and auto-deleted shortly after — no account, no watermark, no DRM added.

Why Convert WMV to M4V?

WMV is Microsoft's video codec family from the late 1990s, paired with the ASF container — fine on Windows but a poor fit for Apple devices. M4V is Apple's MP4 variant, introduced with the iTunes Store in 2006. The two formats sit on opposite sides of the platform divide: pulling a WMV into the Apple Photos library, an iMovie timeline, or an Apple TV app usually requires re-encoding the H.264/AAC inside an M4V (or MP4) container first.

• iTunes / Apple TV imports — Apple Music for macOS (the renamed iTunes app since 2019) and the Apple TV app expect H.264 or HEVC in an MP4/M4V container. WMV will not import; M4V drops straight into the library.
• iMovie and Final Cut Pro editing — Both refuse WMV outright. Converting to H.264 inside an M4V gives you a native, scrubbable timeline asset without proxy generation.
• iPhone, iPad, and Apple Vision Pro playback — iOS Photos and the system video player support M4V natively. Sideloaded WMVs require third-party apps like VLC.
• Older corporate WMV archives — Training videos, screencasts, and webinar recordings exported from Windows Movie Maker, Camtasia, or older Microsoft Stream still ship as WMV. Re-wrap into M4V to preserve them in a format Apple keeps supporting.
• Cover-art display in Finder and the Files app — Apple's file managers read embedded artwork from M4V containers; WMV cover art is not surfaced.
• Browser compatibility — No mainstream browser (Chrome, Firefox, Safari, Edge) ships native WMV decoding. M4V plays inline in Safari and in any HTML5 <video> element with H.264.

WMV vs M4V — Format Comparison

Codec and Quality Settings Quick Guide

Frequently Asked Questions

Will my converted M4V play in iTunes and the Apple TV app?

Yes. xconvert outputs H.264 (or H.265 if you pick it) video with AAC audio inside an M4V container — exactly what the Apple Music app for macOS (the rebranded iTunes since macOS Catalina, 2019) and the Apple TV app expect. Drag the file into the library or use File → Import. There is no FairPlay DRM on xconvert output, so it plays on any Apple device authorized or not.

Does the output have DRM like iTunes Store rentals?

No. The M4V container can carry Apple's FairPlay DRM, but only the iTunes Store and Apple's own encoding pipeline apply it. Files produced by any third-party converter — xconvert included — are unprotected M4V, functionally identical to MP4. You can rename the .m4v extension to .mp4 and most non-Apple players will still open it.

My WMV is DRM-protected (PlaysForSure / Windows Media DRM). Can you convert it?

No, and no honest converter can. PlaysForSure and the older Windows Media DRM bind playback to a license server that Microsoft turned down in stages — the licensing service for some content was decommissioned, and protected files won't decode without a matching license. If your WMV came from a defunct music or video store of the early 2000s, the conversion will fail at the decode step. Unprotected WMVs (camcorder exports, Windows Movie Maker renders, corporate training) convert cleanly.

Should I pick H.264 or H.265 for M4V?

H.264 if you need to share the file with anyone on older Apple gear or non-Apple devices — it has been the default Apple codec since the iPhone 3GS (2009) and works everywhere. H.265 / HEVC if every viewer is on an iPhone 7 or newer, an Apple TV 4K, a Mac on macOS High Sierra (2017) or later, or Safari 11+. HEVC roughly halves the file size at the same perceived quality, but legacy Macs and Windows browsers without the HEVC extension cannot decode it.

Why is the M4V output larger than the source WMV?

WMV files often use aggressive low-bitrate VC-1 settings — perfect for early-2000s streaming, but visually soft. Converting to H.264 at a reasonable quality preset can produce a larger file simply because you are upgrading the bitrate envelope. Drop the Quality Preset to Medium, use Variable Bitrate at 2-4 Mbps for 1080p, or set Constant Quality to CRF 23-28 to land at a smaller size. The "Specific file size" option will hit an exact MB target if you need it.

What is the difference between M4V, MP4, and MOV from Apple?

All three are sibling containers built on the ISO Base Media File Format. M4V is Apple's iTunes/Apple-TV-flavored MP4 — typically H.264/HEVC video with AAC or AC-3 audio, often paired with FairPlay DRM. MP4 is the standards-body container with broader codec freedom (VP9, AV1, AC-4, and many more). MOV is Apple's older QuickTime container, predating MP4 and supporting some legacy codecs MP4 does not. For iTunes library imports, M4V is the canonical choice; for cross-platform sharing pick MP4. See WMV to MP4 or WMV to MOV for the alternates, or M4V to WMV for the reverse trip.

Will subtitles, chapters, or AC-3 5.1 audio carry over?

Subtitles embedded as text tracks in the WMV's ASF container are not transferred — re-import them as a sidecar .srt after conversion. Chapters defined inside WMV are similarly dropped. If your WMV has multi-channel WMA Pro 5.1 audio, the conversion downmixes or transcodes to stereo AAC by default; pick AC-3 in the audio codec dropdown to preserve a 5.1 layout that Apple TV and the Apple TV app can pass through to a receiver.

Are my files private?

Yes. WMV uploads are processed for your session and removed shortly afterward. xconvert does not require an account, does not watermark output, and does not retain the converted M4V. For sensitive corporate training videos, this is a meaningful difference from desktop tools that index converted content into a cloud library.

What if I only need the audio from the WMV?

Convert directly to a lossless or lossy audio container instead of M4V. The WMV to M4A page extracts the AAC stream into an Apple-friendly audio file. To strip and rewrap into separate audio-only files, WMV to MP3 is the most portable target. If you want to keep the video but reduce duration, Trim WMV crops the source before conversion. To shrink an existing M4V further, Compress M4V handles re-encoding at a target bitrate or size.