Convert OGV to MP4
Convert OGV (Ogg Theora) video files to MP4 directly in your browser. OGV has poor support outside Linux and Firefox — MP4 with H.264 plays everywhere, including iPhones, iPads, and macOS Safari. No upload needed.
Drag 'n' drop files here, or
click to select files
.ogv, .ogg
Drop your files and click Convert to get MP4
//when_to_use
When to Convert OGV to MP4
- Converting Wikipedia OGV video clips to MP4 for embedding in Keynote presentations on macOS
- Migrating Linux desktop screen recordings (often OGV by default) to MP4 for sharing with non-Linux colleagues
- Converting OGV educational videos from open-source courseware to MP4 for iPad playback
- Preparing OGV archive footage as MP4 for upload to YouTube, Vimeo, or social platforms
- Converting OGV exports from older versions of Kdenlive or OpenShot to MP4 for inclusion in iMovie projects
//comparison
OGV vs MP4
| Property | OGV | MP4 |
|---|---|---|
| Container | Ogg | MP4 (ISO/IEC 14496-14) |
| Video codec | Theora (Xiph) | H.264 (CRF 23) |
| Audio codec | Vorbis | AAC 128kbps |
| Apple device support | None | Native (preferred) |
| Royalty-free | Yes | No (H.264 patent pool) |
| Best for | Open-source ecosystems | Universal playback |
//how_it_works
How It Works
Drop your OGV files
Drag and drop or select OGV or Ogg video files. First use loads FFmpeg WASM (~30MB).
FFmpeg decodes Theora + Vorbis
FFmpeg WASM parses the Ogg container, decodes the Theora video stream and Vorbis audio stream to raw frames and PCM.
H.264 + AAC re-encode
Video is re-encoded to H.264 at CRF 23 with libx264; audio to AAC at 128kbps. Output is wrapped in an MP4 container with the moov atom at the start.
Download your MP4 files
Your MP4s play on iPhone, iPad, macOS, Windows, Android, and embed in any web player.
// under the hood
OGV is the Ogg container holding Theora video and Vorbis audio — both Xiph open formats. Our converter uses FFmpeg WASM to demux the Ogg container, decode the Theora video stream and Vorbis audio stream, then re-encode video to H.264 at CRF 23 (libx264 medium preset) and audio to AAC at 128kbps. The result is wrapped in an MP4 container with fast-start moov atom for streaming.
//faq
Frequently Asked Questions
- Why convert OGV to MP4?
- OGV uses Ogg Theora video, which Apple devices cannot play natively. iPhone, iPad, and Safari on macOS all reject OGV. Converting to MP4 with H.264 video and AAC audio gives you a file that plays in QuickTime, on every iOS device, and embeds correctly in any modern web player.
- What about Wikipedia OGV downloads?
- Wikipedia and Wikimedia Commons host video as OGV (Theora) and WebM (VP9). If you've downloaded an OGV clip from Wikipedia and want to use it in iMovie, Premiere Pro, or share it on a non-Wikipedia platform, MP4 is the universally accepted format that works everywhere.
- Is there quality loss?
- Yes — both Theora and H.264 are lossy codecs, so transcoding adds a second encoding stage. We use H.264 at CRF 23 which is visually transparent for most content. If the source OGV is high quality, the MP4 will look essentially identical.
- What audio codec is used?
- OGV typically contains Vorbis audio. We re-encode to AAC at 128kbps in the MP4 container, since MP4 doesn't support Vorbis natively. AAC is the standard MP4 audio codec and works on all Apple devices.
- Are my OGV files uploaded?
- No. FFmpeg WebAssembly runs entirely in your browser. Your OGV files never leave your device.
//related_converters
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→