Convert OGV Theora video to MP4 for universal playback. Works with all Ogg video files from open-source projects and web content. Free converter.
Conversion settings — add a file to adjust
Upload your .ogv file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .mp4 file when it's ready.
OGV (Ogg Video) uses the Theora codec—an open-source, royalty-free video format popular in the open-source community and early HTML5 video. While Theora played an important role in the web's transition away from Flash, mainstream adoption shifted to H.264. Converting OGV to MP4 brings this content to universal compatibility.
The conversion transcodes Theora video to H.264, typically producing smaller files with equivalent or better visual quality. Your open-source video content becomes playable on every device.
Universal device compatibility. Most browsers and devices now prioritize H.264/MP4. Safari, mobile browsers, and video players don't play OGV natively.
Modern compression efficiency. Theora dates to early 2000s technology. H.264 achieves better quality at smaller file sizes.
Platform requirements. YouTube, social media, and video hosting services expect MP4. OGV uploads often fail or require server-side conversion.
The conversion transcodes Theora video to H.264 with quality-optimized settings.
**Ogg parsing**: We read the Ogg container, extracting Theora video and Vorbis audio streams.
**Video transcoding**: Theora video decodes and re-encodes to H.264. We analyze content to select optimal bitrate—matching or exceeding original quality.
**Audio conversion**: Vorbis audio converts to AAC for maximum compatibility. Audio quality maintains through the conversion.
**Quality optimization**: Source resolution and content complexity determine encoding parameters.
H.264 output typically matches or exceeds OGV quality. H.264 is more efficient than Theora—equivalent quality at lower bitrate. Your MP4 may be smaller than the OGV while looking equally good. Quality ceiling is limited by source OGV. Vorbis to AAC conversion is transparent.
| Device | OGV | MP4 |
|---|---|---|
| iPhone/iPad | No | Native |
| Android | Partial | Native |
| Windows PC | Partial | Native |
| Mac | No | Native |
| Smart TV | No | Native |
| Web Browser | Partial |
| Speed | ~6 seconds — compute-intensive |
| Output size | ~22% smaller (measured 4.4 MB → 3.4 MB). |
| Quality | Re-encoded to H.264/AAC at a visually-lossless default (CRF 23). |
| Engine | FFmpeg (libx264), server-side. |
Measured on our servers, June 2026, on a 10-second 720p clip.
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 High Profile, AAC audio
Resolution: 1080x1920
Bitrate: 3.5 Mbps
Vertical 9:16, max 90 seconds
Resolution: 960x540
Bitrate: 1-2 Mbps
Max 16MB, keep under 3 minutes
Resolution: 1080x1920
Bitrate: 4-6 Mbps
Vertical, max 10 minutes
Resolution: 1920x1080
Bitrate: 5-8 Mbps
Max 512MB, max 2:20 minutes
Resolution: 1280x720
Bitrate: 2-4 Mbps
OGV to MP4 conversion brings open-source video to universal compatibility. While Theora played an important role in web video history, H.264/MP4 provides the practical compatibility needed today.
Bezpečný přenos
Šifrované nahrávání přes HTTPS
Ochrana soukromí
Soubory automaticky smazány po zpracování
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Funguje všude
| Native |
Max 25MB free, 100MB Nitro
Jakýkoli prohlížeč, jakékoli zařízení
| Vlastnost | OGV | MP4 |
|---|---|---|
| Celý název | Ogg Video | MPEG-4 Part 14 |
| Přípona | .ogv | .mp4 |
| Nejlepší pro | Open source | Universal compatibility |