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Supports: HEIC
A HEIC is a photograph and an M4V is a video file, so this conversion does the only sensible thing: it holds your iPhone photo on screen as a still video clip for a duration you choose. Upload one photo and you get a short clip of that frame; upload several and they become one M4V slideshow. The output is plain H.264 in Apple's .m4v container — the format the Apple TV app, QuickTime and iTunes expect, with no DRM attached.
.m4v. No sign-up, no watermark. Files are uploaded over an encrypted connection, converted on our servers, and deleted automatically a few hours later.| Property | Value |
|---|---|
| Container | M4V — Apple's MP4 variant |
| Video codec | H.264 by default; MPEG-4 Part 2 and Xvid are the alternatives |
| Audio | None. A still photo has no sound, so no audio track is written |
| Frame rate | 1 fps — every frame is identical, so there is no reason to spend bits on more |
| B-frames | Disabled, which avoids a playback start offset on very short clips |
| Duration | Whatever Image Duration you pick, per photo |
| Resolution | The photo's own pixels by default; the source is capped at 4096 px on its long edge before encoding |
| Transparency | Flattened onto the Background Color, since no video format stores alpha |
| DRM | None. The output is an ordinary unprotected H.264 file |
| M4V | MP4 | MOV | |
|---|---|---|---|
| Origin | Apple, used by the iTunes Store | ISO/IEC 14496-14 | Apple QuickTime |
| Underlying structure | ISO base media, same as MP4 | ISO base media | QuickTime file format, the ancestor of both |
| Optional DRM | FairPlay, when Apple applies it | No | No |
| Plays in Apple TV app and iTunes | Yes | Yes | Yes |
| Plays in Windows and Android players | Usually, after the extension is recognised | Yes, everywhere | Usually |
| Best reason to pick it | You are staying inside Apple's apps | You want the file to open anywhere | You are handing it to Final Cut or QuickTime |
If the clip has to travel outside the Apple ecosystem, convert HEIC to MP4 instead — the bytes are near enough identical, but the extension raises fewer questions.
No. A standard HEIC holds one still photograph, so there is nothing to animate — the clip shows that frame, unchanged, for the duration you set. With several photos and "Merge images" you get a sequence of held stills, which reads as a slideshow rather than as footage. If your source is a Live Photo, the moving part lives in a separate video file that the Photos app keeps alongside the still, and it is not inside the HEIC you upload here.
Yes. The output is standard H.264 in an Apple .m4v container with no DRM, which is exactly what the Apple TV app, QuickTime, iTunes and AirPlay handle natively, and it imports into Photos cleanly. VLC and most general-purpose players open it too, because M4V and MP4 are structurally the same container.
Because there is no sound to carry. A photo file contains no audio stream, so the encoder writes a video-only M4V — the audio codec control does not even appear for an image source. To put music behind a slideshow, build the clip here and then add the soundtrack in a video editor such as iMovie, which can drop an audio track onto an existing M4V without re-rendering the picture.
That is the "Image Duration" setting, which defaults to 5 seconds per frame and offers everything from a single frame (1/60s, 1/30s or 1/24s) up to 10 seconds. The value applies to each photo, so six photos at 3 seconds each produce an 18-second M4V. Very short durations are useful when you need a clip that simply exists — a placeholder or a still for a timeline — rather than something to watch.
Because the encoder runs at 1 fps and every frame is identical. After the first keyframe there is almost nothing left to describe, so the bitrate collapses regardless of how long you hold the picture. Doubling the duration barely doubles the file size, which is the opposite of how real footage behaves.
It is centred and the empty area to either side is filled with the Background Color, which is White unless you change it. That applies whenever the photo's aspect ratio differs from the output frame — under "Video resolution", "Keep original" avoids the problem entirely by using the photo's own dimensions. Choose Black in the colour dropdown if you want the more conventional cinematic bars.
Not quite. Before encoding, each image is normalised and capped at 4096 pixels on its long edge, so a 12-megapixel iPhone shot at 4032 x 3024 passes through untouched while a 48-megapixel file at 8064 x 6048 is scaled down to fit. That ceiling exists because encoders and players get unreliable above it, and no consumer display shows more than a fraction of those pixels anyway.
Usually not. H.264 is what the M4V container and every Apple playback path expect, and it is the only codec on this page whose quality preset is applied as a true constant-quality target. The MPEG-4 Part 2 and Xvid options exist for hardware that predates H.264, and both size themselves against a source bitrate — which a photograph does not have — so the result on a still image is unpredictable and usually larger for no visible gain.
They are uploaded over an encrypted connection, converted on our servers, and deleted automatically a few hours later — no sign-up, no watermark, never shared or made public. If you only wanted a shareable picture rather than a video file, HEIC to JPG is the conversion you actually want.