OGV to MP4 Converter

What happens when you convert OGV to MP4

• The video is re-encoded to H.264 video with AAC audio.
• Re-encoding in a browser is slow: expect several times the video's length for HD footage on a laptop, and longer on a phone. Short and low-resolution clips finish much sooner.

How to convert OGV to MP4 online

1. Press "Choose OGV files" and select one or more files, or drag them onto the box. You can add files of any size your device can hold in memory.
2. Adjust the settings if you need to: resolution and quality control the size of the result. The defaults suit most people.
3. Press "Convert to MP4". The first audio or video conversion downloads the converter engine, about 32 MB, which your browser then keeps for next time.
4. Save each MP4 with its download button. Close the tab and every trace of the files is gone from memory.

Why convert OGV to MP4?

OGV files usually come from Wikipedia and Wikimedia Commons video and open-source projects. People convert them to MP4 because MP4 with H.264 plays on every phone, laptop, smart TV and website, and it is what YouTube, Instagram, TikTok and WhatsApp expect.

In short, OGV is good at what it was made for, and MP4 is the more practical choice when the file has to play, upload or edit somewhere else. OGV plays in Chrome and Firefox; Safari does not, while MP4 plays in every browser, phone and smart TV.

How to convert OGV to MP4 on Windows, Mac, iPhone and Android

On Windows

Open this page in Chrome, Edge or Firefox, drag your OGV files in from File Explorer, and press Convert. Each MP4 is saved to your Downloads folder. If you prefer a desktop program, VLC can also convert OGV to MP4: choose Media, then Convert / Save.

On a Mac

Safari, Chrome and Firefox all work. Drag the OGV files from Finder onto the drop zone and the MP4 files land in Downloads.

On iPhone and iPad

Open the page in Safari and tap Choose OGV files. You can pick from Photos or from the Files app. The converted MP4 appears in Files, in the Downloads folder; to put it in your photo library, open it there, tap Share and choose Save Video.

On Android

Open the page in Chrome, tap Choose OGV files and pick them from Files or your gallery. The MP4 is saved to the Download folder, where any file manager can find it. Keep the screen on while a long video converts, because Android may pause a tab in the background.

Best settings for OGV to MP4

Leave Resolution on Keep original and Quality on Standard if the video only needs to change container: that is what lets the tool copy the H.264 stream straight into the MP4, which is fast and loses nothing.

If the file is too big, change either setting and the video is re-encoded with H.264. Quality uses the CRF scale: High is 20, Standard 23 and Smaller file 28. As a rule of thumb each step of about 6 on that scale halves or doubles the size. Dropping from 1080p to 720p usually saves more than lowering the quality, and it also makes the conversion much faster.

OGV vs MP4: the differences

About OGV and MP4 files

What is an OGV file?

OGV holds Theora video, a free codec that Wikimedia uses for its media. Theora is noticeably less efficient than H.264, so OGV files are often larger for the same quality.

What is an MP4 file?

MP4 is the most widely supported video format, and H.264 video with AAC audio inside it plays on essentially every device made in the last fifteen years.

OGV to MP4 not working? Common problems

• The conversion is slow. Audio and container changes take seconds, but re-encoding video runs on your own processor. Lower the resolution to 720p, close other tabs, and keep the device plugged in.
• The tab stops or reloads on a very large file. Browsers limit how much memory one tab can use, around 2 GB and less on phones. Split long recordings or convert them on a computer.
• The MP4 will not play on an old device. Try the other formats offered for OGV, or choose 720p, which older players handle more reliably.

Convert OGV to MP4 with ffmpeg

This converter runs ffmpeg inside your browser. If you would rather use the ffmpeg command line on your own computer, this command produces an equivalent MP4 with the same kind of settings:

ffmpeg -i input.ogv -c:v libx264 -crf 23 -preset veryfast -c:a aac -b:a 128k -movflags +faststart output.mp4

Replace input.ogv with the name of your file. For a whole folder of OGV files, run the command in a loop, or drop them all on the converter above, which processes them one after another.