Convert RMVB to APNG Online

RMVB to APNG Converter

RMVB (RealMedia Variable Bitrate) is a legacy RealNetworks video container long used to distribute Asian-web TV episodes and movies, while APNG (Animated PNG) is a modern, lossless animated-image format that plays inline in browsers without a player plugin. This converter takes the RMVB file directly — no intermediate MP4 step — and produces a short, high-color APNG loop. Most online APNG makers (including ezgif) don't accept RMVB at all, so you'd otherwise have to transcode to MP4 first.

RMVB Format at a Glance

APNG Format at a Glance

How to Convert RMVB to APNG

1. Upload Your RMVB File: Drag and drop your .rmvb into the box or click "Add Files." The file uploads over an encrypted connection, is processed on our servers, and is deleted automatically after a few hours.
2. Set the Framerate: Pick a value from the Framerate dropdown. The default is 10 FPS, which keeps APNG file size manageable; raise it toward 15-25 FPS for smoother motion at the cost of size.
3. Adjust Image Quality, Colors, and Resolution: Use Image quality (%) to trade detail against size, Colors to reduce the palette where the source is simple, and the Image resolution preset (or percentage) to scale the loop down — keep a short clip and a modest resolution, since APNG is lossless and grows quickly.
4. Convert and Download: Click Convert and save the APNG. No sign-up, no watermark.

Frequently Asked Questions

Why is my APNG so much larger than a GIF of the same clip?

APNG is lossless and stores full 24-bit color per frame, so it doesn't throw away data the way GIF's 256-color quantization does. That's exactly why it looks cleaner — no banding or dithering — but a busy, photographic RMVB clip will produce a noticeably bigger APNG. To keep size down, trim to a few seconds, drop to 10 FPS, lower the resolution, and reduce the Colors value when the footage is simple.

Will every browser play the APNG?

About 95% of browsers do — Chrome 59+, Firefox 3+, Safari 8+ and Edge 79+ all animate APNG natively (per caniuse). The format degrades gracefully: a viewer that doesn't support animation simply shows the first frame as a normal static PNG, so the image is never broken.

Does the converter need me to turn RMVB into MP4 first?

No. We decode the RealMedia/RealVideo stream server-side and render frames straight to APNG. Many browser-based APNG tools list only MP4, WebM and AVI as inputs, so with those you'd have to transcode RMVB to MP4 yourself first — this page skips that step.

Should I use APNG or animated WebP for a web loop?

For a website, animated WebP is usually the better pick: its lossy mode is typically a small fraction of an equivalent APNG while keeping 24-bit color and alpha, and support sits around 97%. Choose APNG when you specifically need lossless frames or guaranteed PNG fallback. If web delivery is the goal, our RMVB to WebP converter is worth comparing.

What happens to the audio in my RMVB file?

It's dropped. APNG is an image format with no audio track, so any soundtrack in the RMVB is discarded during conversion. If you need the audio or a playable video, convert to a video format instead — see RMVB to MP4.

How long can the clip be?

Keep it short — a few seconds. Because APNG is lossless and frame-based, a long RMVB clip produces an enormous file and a slow-loading animation. In our testing, a 5-second 480p RMVB clip at 10 FPS produced an APNG in the low single-digit megabytes, while pushing the same clip to 25 FPS and full resolution multiplied that several times over. Trim or downscale before converting if size matters.

How do I make the APNG smaller after converting?

Lower the framerate and resolution first, since those cut the most. Reducing the Colors value helps when the footage is graphic rather than photographic. You can also re-run the result through our APNG compressor, which applies additional lossless optimization. For a much smaller (lossy) animated alternative, convert the same RMVB to GIF or WebP instead.