Convert M4V to APNG Online

Convert M4V to APNG Online

Turn a short M4V clip into an animated PNG that keeps full color and clean alpha transparency — the things an animated GIF throws away. M4V is Apple's MP4 variant (the format iTunes and the iPhone produce), and APNG packs every frame into a single lossless PNG, so logos, screen recordings, and detailed art stay crisp instead of dithering down to 256 colors. Pick a framerate, cap the resolution if you want a smaller file, and download — no sign-up, no watermark.

How to Convert M4V to APNG

1. Upload Your M4V File: Drag and drop your .m4v (or .mp4) clip onto the page or click "Upload." Files are sent over an encrypted connection and deleted automatically after a few hours.
2. Set the Framerate: Choose a value under "Framerate" — 10 FPS is the recommended default for smooth-but-small animations. Higher framerates look more fluid but multiply the frame count and file size.
3. Cap Resolution and Colors (Optional): Under "Image resolution" keep the original size or pick a preset/percentage to shrink it; under "Colors" keep the original 24-bit palette, or use "By Color Reduction + Dither" to trade color depth for a smaller APNG. "Image quality (%)" tunes the per-frame compression.
4. Convert and Download: Click "Convert." Our pipeline extracts frames with ffmpeg, assembles the APNG with apngasm, and runs apngopt (Zopfli) to squeeze the final file. Download it when it's ready.

APNG vs GIF vs WebP

Source for color depth and transparency: MDN's image format guide; APNG support figure from caniuse.

Frequently Asked Questions

Why convert M4V to APNG instead of GIF?

APNG keeps full 24-bit color and smooth 8-bit alpha transparency, while GIF caps each frame at 256 colors and only does hard on/off transparency. If your clip has gradients, soft drop shadows, or anti-aliased edges, GIF introduces banding and jagged "halo" outlines that APNG avoids. The trade-off is size: because APNG is lossless it is usually larger than an optimized lossy WebP, though often smaller than a GIF of comparable quality. If you need the broadest compatibility instead, see M4V to GIF.

Will the APNG keep transparency from my M4V?

Only if the source frames actually contain an alpha channel. A standard M4V from iTunes or an iPhone is fully opaque H.264 video with no transparency, so the APNG will be opaque too. APNG can store full alpha, but it cannot invent transparency the source video never had — you would need footage exported with an alpha channel (for example a screen recording or motion-graphics render that preserves it).

How long can the M4V clip be?

Keep it short. APNG is lossless and stores every frame as a full PNG, so a long clip at a high framerate produces a very large file fast. For a few seconds of animation, lower the framerate (10 FPS is a good default) and cap the resolution to keep the output manageable. The practical limit you will hit first is upload size and time, not a frame ceiling on our end.

Can I convert a DRM-protected iTunes M4V?

No. Movies and TV shows purchased or rented from the iTunes Store are wrapped in Apple's FairPlay DRM and can only play on authorized devices tied to that account. A DRM-protected M4V cannot be decoded or converted by any online tool. Only DRM-free M4V files — your own recordings or exports — will convert.

Is my file private?

Yes. Your M4V is uploaded over a TLS-encrypted connection, converted on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark on the output, and files are never shared or made public. In our testing, a 3-second 720p M4V at 10 FPS produced an APNG of roughly 2-4 MB depending on how much motion and color detail the clip contained.