Convert APNG to OGV Online

APNG to OGV Converter

APNG (Animated PNG) is a lossless animation format with full 24-bit color and 8-bit alpha transparency, which makes its files large and limits it to playback as an image rather than a video. OGV is the Ogg container carrying Xiph.Org's royalty-free Theora codec — a lossy, open-source video format. Converting APNG to OGV trades the lossless frames and transparency for a much smaller, seekable video file suited to open-source and archival pipelines such as MediaWiki/Wikimedia. Because Theora has no alpha channel, transparent pixels are flattened onto a solid Background Color you choose during conversion.

APNG Format at a Glance

OGV (Ogg Theora) Format at a Glance

How to Convert APNG to OGV

1. Upload Your APNG File: Drag and drop your .apng file onto the page or click "Upload" to pick it. You can add several APNG files at once.
2. Pick a Merge Strategy and Quality Preset: Choose "Merge images" to combine multiple uploads into one OGV, or "Video per image" for a separate file each. Set Quality Preset (default "Very High") to balance Theora's lossy compression against file size.
3. Set Background Color, Image Duration, and Video Resolution: Because Theora has no alpha channel, pick a Background Color (default Black) to fill transparent pixels. Adjust Image Duration for per-frame timing and Video Resolution if you want to scale the output.
4. Convert and Download: Click "Convert" and download your OGV. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours. No sign-up, no watermark.

Frequently Asked Questions

Is OGV still a good format to convert to in 2026?

Only for specific cases. Native HTML5 <video> support for Ogg/Theora has been largely removed from modern browsers — Firefox dropped it after version 129, Chrome after 120, and Edge after 122, while Safari never supported it. OGV remains useful for open-source and royalty-free pipelines and for platforms like Wikimedia that historically required Ogg, and it still plays in desktop players like VLC and MPV. For broad website and device playback, MP4 (H.264) or WebM are better targets — see APNG to MP4.

Will my APNG's transparency survive the conversion to OGV?

No. The Theora codec inside OGV has no alpha channel, so any transparent pixels are flattened onto the solid Background Color you select (default Black). If your animation relies on transparency over a webpage, convert to a format that keeps alpha, such as WebM with VP9, instead.

Why is the OGV file so much smaller than the APNG?

APNG is lossless, storing every frame as a full PNG bitmap, so files grow quickly with frame count and resolution. Theora is a lossy, DCT-based codec that discards visual detail the eye is less likely to notice, which is why an OGV is typically a fraction of the source APNG's size. The Quality Preset controls how aggressive that trade-off is.

Does the OGV output include an audio track?

No. APNG is a silent image format, so the resulting OGV has video only. The Ogg container can carry a Vorbis audio track, but there is no audio in the source to include.

How do frame timing and "Image Duration" work?

APNG stores its own per-frame delays, and the converter maps your animation onto Theora's video timeline. The Image Duration option sets how long each contributed image is held when you are building a video from one or more stills; for a normal animated APNG the existing frame timing drives the motion. In our testing, a short looping APNG converted to OGV at the default "Very High" Quality Preset preserved smooth playback while shrinking the file substantially.

What can open an OGV file after I download it?

VLC and MPV play OGV reliably on Windows, macOS, and Linux without extra codecs. Many browsers no longer play Ogg/Theora natively, and Windows Media Player needs a DirectShow filter. If you need a file that "just plays" on phones, browsers, and TVs, MP4 is the safer choice.

Should I convert APNG to OGV or to WebM instead?

WebM (VP8/VP9) is also open and royalty-free but has much better modern browser support and compression than Theora, and VP9 can even preserve alpha transparency. Choose OGV only when a specific tool or archive requires the Ogg/Theora format; otherwise WebM or MP4 will be more broadly playable.

Are my uploaded files kept private?

Yes. Your APNG 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, and files are never shared or made public.