Step 1: Supply your WebM files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted M4V files.
WebM to M4V Conversion FAQ
What does the WEBM to M4V converter do?
+
It transcodes a WEBM video into the M4V container. Resolution, frame rate, and aspect ratio are preserved by default — useful when you need a different format for a target player without quality loss.
Will resolution and frame rate be preserved in the M4V?
+
Yes. WEBM → M4V keeps resolution, frame rate, and aspect ratio unchanged by default. To change them, use the Resize or Speed tool on the result.
Is the WEBM to M4V conversion reversible?
+
You can convert the M4V back to WEBM on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
Will the converted M4V be a different size than the WEBM?
+
Modern codecs compress better, so M4V from a legacy WEBM is typically 30-60% smaller at equivalent quality. Conversions in the opposite direction can grow the file.
Will the M4V I get back be locked to a store or an account?
+
No, and the extension is what causes the confusion. M4V names a video file with the same internal structure as an ordinary MP4; the ones sold through a store are additionally wrapped in the seller's protection, and that wrapping is a property of the purchase rather than of the format. A file converted here has none of it — a plain, unprotected video that happens to carry that extension, playable wherever the extension is recognised and convertible onward as many times as you like. M4V is Apple’s variant of MP4, used by iTunes and the Apple TV app for films and TV episodes.
Can the M4V hold more than one audio track?
+
Yes, and it is a real upgrade over WEBM. M4V treats every audio stream as a first-class track, so an original-language mix, a dub and a director commentary can live in one file with the player switching between them on demand. M4V keeps chapter markers, artwork and subtitle tracks in the shape the Apple TV app expects, which plain MP4 often loses.
Does M4V support chapter markers that WEBM did not?
+
It does. M4V stores chapters as container metadata, so a long recording can be navigated by section instead of by scrubbing a progress bar. WEBM has nowhere to put that information, so if the source shipped with a chapter list it was in a sidecar file — hand that to the converter and it gets written into the M4V.
Can I still embed the file on a web page after converting WEBM to M4V?
+
Not directly. WEBM plays inline in every browser; M4V does not, so a page embedding it falls back to a download link or an empty player frame. If the file is destined for a website, keep the WEBM for the web and treat the M4V as the archive or editing copy. DRM-protected M4V purchases cannot be converted by anything; only unprotected M4V files are convertible, and non-Apple players often need the extension renamed.
Both WEBM and M4V are modern containers — which should I actually keep?
+
Keep whichever matches where the file is going, because neither is better in the abstract. One of these two is built for playback compatibility and the other for holding everything a file might contain, and they trade against each other exactly along that line. The pragmatic answer for most libraries is to archive in the feature-rich container and export to the compatible one on demand. WebM plays natively in every modern browser with no plugin, no licence fee and no patent exposure, which makes it the default for web-embedded video.
Is there a file-size limit when converting WEBM to M4V?
+
Anonymous uploads are capped at a generous default; signed-in free accounts get a higher cap, and Pro accounts have no per-file limit. Browser memory is usually the practical constraint long before our server-side limits kick in.
Can I batch-convert several WEBM files to M4V at once?
+
Yes. Drop or pick multiple WEBM files in one upload — the converter processes them in parallel and returns a ZIP of the M4V results. There is no need to repeat the upload step per file.
What happens to my WEBM files after the conversion?
+
Uploaded files and M4V outputs are auto-deleted after a short retention window. We do not inspect, share, or train on user files. Direct download links are time-limited and tied to your session.
