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OGV to AVI Converter

Turn OGV files into AVI in a couple of clicks. OGV is an open Ogg container carrying Theora video; AVI is a legacy Microsoft container. Some detail is discarded to fit the target format; how much depends on the format and your settings.

Not uploaded to any serverConverted on this deviceGone when you close the tabHow this works

Drop your files here

OGV files (.ogv) · up to 512 MB each

or paste files from your clipboard

Ready when you are

Drop a OGV file above and FileTools360 will turn it into AVI — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your OGV files
Drag them onto the drop area, choose them from your device, or paste them from your clipboard. You can queue several at once. Nothing is sent anywhere — the file stays on this device.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control codec, resolution and bitrate and the audio track.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

Privacy, in plain words

Is it safe? Your OGV file is not uploaded anywhere

What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.

What happens instead. This site does not do it. There is no server here that receives files, so your OGV file is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.

Check it yourself in ten seconds

Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.

The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.

Why this matters more than it sounds

Video is the format where the thing being converted is usually a recording of people, and often of people who did not expect a third party to have a copy. It matters more than it sounds, because of what video files usually are:

Medical or therapy consultations

clinical recordings under strict handling rules

Unreleased footage

material under embargo or still being edited

Recorded meetings and calls

everything said, by everyone in the room

Interviews

sources and participants who consented to you, not to a website

A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.

OGV and AVI explained

OGV is the Ogg container carrying Theora video, an early royalty-free codec that has been comprehensively superseded by VP9 and AV1.

AVI is a Microsoft container from 1992. It predates modern video compression and lacks features taken for granted today, such as proper support for variable frame rates and modern codec metadata.

Where OGV files come from: Open-source projects and Wikipedia media from the early 2010s.
Where AVI is used: Old camcorders, legacy Windows software and archived downloads.

OGV vs AVI

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

OGV compared with AVI
Property	Source	Target
Compression	Container (depends on codec)	Container (depends on codec)
Animation	Yes	Yes
Introduced	2008	1992
Browser support	Firefox and Chrome. Largely superseded by WebM.	Wide but dated. Not supported in browsers.

OGV is stronger at: Royalty-free. Open specification.
AVI is stronger at: Readable by very old software. Simple, well understood structure.

Why convert OGV to AVI?

People make this switch when they run into the limits of OGV: new work — WebM does the same job far better. AVI is the better fit when a legacy system specifically requires it.

OGV limitations that prompt the switch: Theora compresses poorly compared with anything modern. Very limited support. No reason to choose it today.
What you give up: Inefficient — much larger than MP4 for the same quality. No browser support.

Does converting OGV to AVI reduce quality?

AVI compresses without discarding data, but it cannot represent everything an OGV file holds. What does not fit is discarded permanently, so converting the result back will not restore it. Keep the OGV original if it is the only copy.

Measured, not estimated

What converting OGV to AVI actually costs

On every sample measured, the AVI came out larger — 1.6× larger at best and 2.0× larger at worst.

Each row is one sample chosen to isolate a property these formats treat differently.
Sample	OGV in	AVI out	Change
An easy clipThe compressible end of the range — a clean tone, or a moving test pattern — where a codec does its best work.	89.7 KB	176 KB	+97%
A hard clipThe other end — pink noise, or dense video grain. Close to incompressible by design, and the worst case for every codec.	1.2 MB	1.9 MB	+61%

Produced by this site's own converter. The same code that runs in your browser, at the same default settings, so these are the bytes you would download.

Samples are generated from a fixed seed rather than taken from real photographs or documents, so the corpus is reproducible and carries no licensing question — and so the numbers predict the shape of your result rather than its exact size. Measured 2026-10-01. The method, and the command that regenerates every figure on this page, are on the how it works page.

About these formats

Source

Ogg Video

Open Ogg container carrying Theora video.

Extensions: .ogv
MIME type: video/ogg
Best for: Open-source pipelines
Compatibility: Firefox and Chrome. Largely superseded by WebM.

Target

Audio Video Interleave

Legacy Microsoft container. Widely readable, inefficient.

Extensions: .avi
MIME type: video/x-msvideo
Best for: Older Windows software · Legacy hardware
Compatibility: Wide but dated. Not supported in browsers.

Good to know

OGV to AVI Converter — questions

How do I convert OGV to AVI?

Drop your OGV file onto the area above, then press Convert. The AVI file saves straight to your device. You do not need an account, and there is no watermark.

Is it safe to convert OGV files here — are they uploaded to a server?

No, nothing is uploaded. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website; it is converted there and sent back. That copy is what "upload" means, and it is the part that puts your file out of your control. This site does not do it. Your OGV file is read and converted by the browser you are using right now and never leaves this device, so there is no copy for anyone to store, read or hand over. You can prove it: turn off your Wi-Fi after this page loads and the conversion still works.

Can I convert confidential OGV files, like bank statements or contracts?

Yes, and that is the case this site was built for. Because the file never leaves your device, a confidential document is no more exposed than it is sitting in your own folder — there is no transfer, no copy on someone else's hardware, no retention period to read about and no staff with access. Nothing is logged about the file either: not its name, not its size, not its contents. The one thing worth saying plainly is that this protects the file in transit and at rest on our side, not from anything already on your own computer.

Does converting to AVI reduce quality?

Yes, though not through compression — AVI stores what it holds without discarding data, but it cannot hold everything a OGV file does. What does not fit is dropped permanently, and converting the result back will not bring it back.

How large a file can I convert?

Up to 512 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android, including choosing files straight from your camera roll. Very large videos may run out of memory on a phone — those are better converted on a laptop.