Convert OGV to MP4
Make Ogg Theora videos play in Safari, on iPhone and in video editors.
Files are processed on our server in Europe. Download links expire after 60 minutes; files are then deleted automatically.
Why use Video Compressor
Private and secure
Your video is sent over an encrypted connection to our server in Europe and stored under a random ID. It is never shared with third parties or used to train AI. Download links expire after 60 minutes; files are then deleted automatically, normally within 75 minutes. Read the privacy policy
Honest results
Choose quality and resolution. Progress comes from the encoder itself, and the result shows the exact size of your MP4 next to the original.
Free, no sign-up
Video Compressor is free with no account, no watermark and no ads. It works in any modern browser on phone or desktop.
In short
OGV to MP4 converts Ogg videos with Theora video and Vorbis audio into MP4 with H.264 and AAC, so they play in Safari, on Apple devices and in common editors. Ogg files without a video stream are reported as audio-only. Files up to 1 GB and 30 minutes are supported.
| Accepted formats | MP4, MOV, M4V, 3GP, WebM, MKV, AVI, WMV, FLV, MPEG, MTS/TS, OGV |
|---|---|
| Maximum file size | 1.00 GB |
| Output | MP4 (H.264 video, AAC audio), max 1080p, never upscaled |
| Video limits | Up to 30 minutes, up to 4K input |
| Target size | Not on converter pages; the video compressor sets target sizes |
| Units | 1 KB = 1,000 bytes; 1 MB = 1,000,000 bytes |
| Where files are processed | On our server in Europe; not sent to third parties |
| Retention | Download link expires after 60 minutes; files deleted automatically, normally within 75 minutes |
| Price | Free, no account, no watermark |
| Typical sources | Wikimedia Commons, open-source screen recorders (such as recordMyDesktop), Linux and Firefox-era web video |
| Codecs read | Theora and VP8 video; Vorbis, Opus and FLAC audio |
How to use it
- Choose or drop your OGV file (up to 1 GB, 30 minutes), or import it from a link.
- Keep the High quality preset, or pick a lower resolution if you also want a smaller file.
- Select Convert to MP4 and keep the tab open while it uploads and converts.
- Preview the MP4 and download it.
Why convert OGV to MP4?
Ogg Theora is a royalty-free format used by Wikipedia and many open-source tools. Safari, iPhone and most video editors don't support it. MP4 with H.264 plays on every major browser and device.
Reusing Wikimedia Commons video
Conversion doesn't change a video's licence. Keep the attribution and licence terms shown on the file's Commons page when you reuse it.
Questions
Is OGV to MP4 conversion lossless?
No. The video is re-encoded to H.264, which is lossy, but converter pages start at the High quality preset, where the difference is hard to see at normal viewing size. The picture is never upscaled, and the shorter side is capped at 1080 pixels.
My .ogg file was rejected. Why?
.ogg files usually contain audio only. This tool needs a video stream; an audio-only file is reported as unsupported.
What happens to my file after conversion?
It's stored under a random ID on our server in Europe. The download link expires after 60 minutes and the file is then deleted automatically, normally within 75 minutes. Canceling deletes it immediately.
Convert other formats to MP4
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- MKV to MP4Turn Matroska MKV recordings into MP4 for phones, TVs, editors and upload sites.
- FLV to MP4Rescue old Flash Video files now that Flash Player is gone.
- Video compressorMake any video smaller, with a target size.
Last reviewed October 31, 2026.