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Supports: OGV
OGV is Xiph.Org's open Ogg video container, and its soundtrack is almost always Vorbis — also a Xiph.Org codec. This tool discards the video and re-encodes just that audio track as Opus, Xiph's own newer codec. There's a neat logic to it: Xiph.Org has officially recommended Opus over Vorbis for new work since February 2013, so going Vorbis to Opus is the most natural modernization in the whole Ogg ecosystem — you're moving to the successor the same foundation designed. The short version: extract to Opus when your target supports it and you want the smallest modern file; if you need to play the result on older hardware, extract to MP3 instead, and if you'd rather keep a watchable video, convert OGV to MP4.
| Property | Vorbis (usual OGV audio) | Opus (output) |
|---|---|---|
| Developer | Xiph.Org Foundation | Xiph.Org Foundation + IETF |
| Standardized | Ogg Vorbis, ~2000 | RFC 6716, September 2012 |
| Design | MDCT transform coder | SILK (speech) + CELT (music) hybrid |
| Compression | Lossy | Lossy |
| Bitrate range | ~45-500 kbps typical | 6 kbps to 510 kbps |
| Low-bitrate quality | Good above ~96 kbps | Better, especially below 64 kbps |
| Royalty status | Royalty-free | Royalty-free |
| Xiph's own guidance | Deprecated for new work (since Feb 2013) | Recommended successor |
| Native playback | Firefox, Chrome (older), VLC, Android | Chrome, Firefox, Edge, Safari; Android 10+ |
| Best for | Legacy Ogg files, older game engines | New encodes, web, messaging, streaming |
The headline difference is efficiency. In the Opus project's own listening tests, Opus at 96 kbps matched an MP3 encoder running at 136 kbps, and Opus holds up unusually well through re-encoding — 64 kbps Opus beat 128 kbps MP3 in a cascaded-transcode test. That efficiency is exactly why extracting to Opus produces a smaller file than MP3 for the same perceived quality. What it cannot do is undo losses already baked into the Vorbis source (more on that below).
.ogv onto the page, or click "+ Add Files" to browse. Wikimedia Commons downloads, Linux screen recordings, and old HTML5 video files all work, and you can queue several to extract with the same settings..opus file. The video is gone; you keep only the audio. No sign-up, no watermark.The audio inside an OGV is almost always Vorbis, which is already a lossy codec. Re-encoding it to Opus — also lossy — is a second-generation transcode: detail the first Vorbis encode discarded stays gone, and Opus can shed a little more. The good news is that Opus is exceptionally good through cascaded encodes, so the added loss is small if you don't starve it of bitrate. The rule of thumb: match or modestly exceed the source rate. A 160 kbps Vorbis track re-encoded to 128-160 kbps Opus stays close, because Opus packs more into each kilobit; pushing it to 320 kbps just makes a bigger file without recovering anything. Keep the original OGV if you might need full fidelity later — lossy re-encoding is not reversible.
No. This is an audio extraction: the Theora (or VP8) video track is discarded and you get an audio-only .opus file. If you'd rather keep a playable picture alongside the sound, convert OGV to MP4 instead — that remuxes to a widely supported video container rather than throwing the video away.
No, and that's an honest limit rather than a tool flaw. Vorbis is lossy, so re-encoding it to Opus is lossy-to-lossy and cannot rebuild detail the original Vorbis encode already discarded. What you gain is efficiency: Opus stores the same perceived quality in a smaller file, and it survives the extra encode better than most codecs. Keep the bitrate at or near the source to avoid adding audible loss.
Because Opus is the one Xiph itself recommends now. Since February 2013 the Xiph.Org Foundation has said new work should use Opus rather than Vorbis, which it considers deprecated. Opus is more bitrate-efficient, has far lower latency, and is the codec modern platforms standardized on (WhatsApp, Discord, YouTube, WebRTC). Moving an OGV's Vorbis soundtrack to Opus is simply following that successor path within the same open, royalty-free family.
Less than you'd expect, because Opus is so efficient. For music, 96-128 kbps is transparent for most listeners — at 96 kbps Opus is roughly on par with AAC and clearly ahead of MP3 at the same rate. For speech-only OGV (lectures, talks, screencasts), 32-64 kbps mono is clean and tiny. Set this under File Compression with Variable Bitrate, Custom Bitrate, or Specific file size. In our testing, a 3-minute stereo Vorbis OGV re-encoded to 112 kbps Opus was hard to distinguish from the source in normal listening, at well under half the original file's size.
Yes. Google removed Theora — the video codec most OGV files use — from Chromium in Chrome 123 (announced October 2023, disabled by default in Chrome 120 that December), and Firefox followed, so an .ogv may no longer play directly in a browser. That removal only affects the Theora video; standalone decoders still read the Vorbis audio, which is how xconvert decodes your file and writes the Opus output. The resulting .opus doesn't depend on any Ogg or Theora support to play.
Usually on phones, less reliably on older car and TV hardware. Chrome, Firefox, Edge, and Safari all play Opus, Android recognizes the bare .opus extension from Android 10 onward (earlier versions play it inside .ogg), and modern iPhones play it through Safari and the system audio stack. The weak spots are a long tail of pre-2018 devices — some legacy car infotainment systems and older smart TVs never added Opus. If you need guaranteed playback on old hardware, use OGV to MP3 instead.
Your OGV is uploaded over an encrypted connection, the audio is extracted to Opus on our servers, and the files are deleted automatically a few hours after conversion. There is no sign-up, no watermark, and your files are never shared or made public.