AVI to OGV Converter

How to Convert AVI to OGV Online

1. Upload Your AVI File: Drag and drop or click "Add Files" to select AVI (Audio Video Interleave) files. DivX, Xvid, MPEG-4, and uncompressed AVI all decode cleanly. Batch is supported — drop in an entire folder of legacy clips.
2. Pick Theora Codec and Quality: Default is Theora video (the only codec OGV supports) paired with Vorbis audio. Choose a quality preset (Highest, Very High, High, Medium, Low, Lowest), target a percentage of the original size, set an exact size in MB, or fine-tune with the Theora qscale slider (range 0-10, where 10 is highest quality). Swap Vorbis for Opus, FLAC, or MP3 if your player chain supports it.
3. Resize or Trim (Optional): Pick a resolution preset (1080p / 720p / 480p / 360p / 240p), enter a custom width × height, scale by percentage, or trim using start time + duration in HH:MM:SS.sss format. Autoscale keeps aspect ratio locked.
4. Convert and Download: Click Convert. Files process in your browser session — no sign-up, no watermark, no upload to a third-party server.

Why Convert AVI to OGV?

AVI is Microsoft's 1992 container, ubiquitous on Windows but tied to a generation of codecs (DivX, Xvid, MPEG-4 ASP) that aren't natively playable in any modern browser. OGV (Ogg Theora) is the Xiph.Org Foundation's fully open-source video format — Theora video in an Ogg container, royalty-free, with no patent encumbrances. Common reasons to convert AVI → OGV:

• Wikipedia and Wikimedia Commons uploads — Wikimedia's policy permits only patent-free formats. Ogg Theora and WebM are accepted; AVI containing DivX or Xvid is not. Anyone contributing legacy footage to a Wikipedia article converts to OGV (or WebM) first.
• Open-source software demos and Linux distros — Fedora, Trisquel, and Debian main refuse non-free codecs out of the box. Theora ships in their default repos; AVI playback often needs RPM Fusion or Debian's non-free archive.
• Royalty-free distribution — DivX and Xvid stem from MPEG-4 ASP and carry MPEG-LA licensing exposure for paid distribution. Theora has zero licensing fees for any commercial use, which matters for embedded video in apps, kiosks, and educational platforms.
• HTML5 <video> embedding without proprietary codecs — Browsers don't play AVI natively. OGV plays in Firefox, Chrome, and Opera straight from a <video> tag — no plugin, no Flash, no transcoding step at request time.
• Archival in patent-free formats — Long-term preservation projects (Internet Archive's older video uploads, library digitization of camcorder tapes captured to AVI) often pick Theora because the format will never be encumbered by future licensing claims.
• Modernizing old camcorder and capture-card footage — Mini-DV cassettes, VHS captures, and webcam recordings from the 2000s typically landed in AVI. Re-encoding to OGV produces a smaller, browser-playable file for sharing on open-web platforms.

AVI vs OGV — Format Comparison

Theora Quality Quick Guide

Frequently Asked Questions

Why is my OGV file larger than the original AVI?

It depends on what codec the AVI used. AVI containing efficient DivX or Xvid encodes can be smaller than the resulting Theora OGV at equal visual quality, because Theora (frozen in 2009) is less efficient than MPEG-4 ASP. AVI containing uncompressed video or MJPEG will shrink dramatically when re-encoded to Theora. If file size matters more than patent-freeness, WebM with VP9 or AV1 is smaller and still royalty-free.

Will Safari users play my OGV?

No. Safari has never shipped native Theora support on macOS or iOS. If your audience includes Safari users, embed a fallback <source> tag with WebM or MP4. For Wikipedia uploads this isn't an issue — Wikimedia transcodes OGV to WebM server-side for Safari visitors.

Should I keep Vorbis or use Opus for audio?

Vorbis is the historical Ogg audio codec and the safe default for OGV — it has the broadest player support (Firefox, VLC, Linux media stacks). Opus is newer and more efficient (better quality at lower bitrate) and is supported in modern OGV-compatible players, but a few older Theora-only tools may stumble on it. Pick Vorbis for maximum compatibility, Opus for best quality-per-byte.

My AVI uses DivX or Xvid — will it convert correctly?

Yes. DivX, Xvid, and MPEG-4 ASP all decode through FFmpeg and re-encode to Theora without trouble. The output is a fresh encode (not a remux), so quality drops slightly compared to the source. Use the Highest or Very High preset to minimize loss. AVI files with VBR MP3 audio or AC-3 also handle cleanly.

What's the Theora qscale range?

Theora uses a 0-10 quality scale (FFmpeg's -qscale:v parameter), where 10 is the highest quality and 0 is the lowest. This is inverted from H.264's CRF (where lower is better). The default preset maps to qscale 7, which is visually excellent for most content. Push to 9-10 for archive masters, drop to 4-5 for web tutorials.

Does OGV support subtitles burned into the AVI?

If your AVI has hardcoded (burned-in) subtitles, they'll convert because they're already part of the video frames. Soft subtitle tracks inside AVI (rare — usually external .srt or .sub) won't be carried into the Ogg container. The Ogg format technically supports subtitles via Kate, but most OGV players ignore them. Distribute subtitles as a separate .srt file alongside the video.

Is OGV still relevant in 2026?

For most web video, WebM with VP9 has overtaken Theora — it's smaller, sharper, and equally royalty-free. OGV remains relevant for three workflows: Wikipedia/Wikimedia uploads (where Ogg Theora is explicitly accepted), strictly libre Linux distros that refuse any non-Xiph codec, and archival preservation in formats that will never face patent claims. If neither applies, consider AVI to MP4 or AVI to WebM instead.

What's the file size limit?

XConvert handles large AVI inputs including multi-GB Mini-DV captures. Conversion runs in your browser, so the practical ceiling is your device's available memory. Theora encoding is single-threaded and slower than H.264, so expect 2-4× longer encode times than AVI to MP4 for the same file.

Can I batch convert multiple AVI files to OGV?

Yes — drop in folders of camcorder captures, legacy downloads, or screen recordings. They convert in parallel within your browser session and download individually or as a single ZIP. Same Theora settings apply to every file in the batch.