OGV to ASF Converter
FileFlip converts OGV to ASF entirely inside your browser, using FFmpeg compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert an OGV file to ASF?#
- Drop your OGV file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to ASF and the conversion starts on its own. FileFlip downloads 30.8 MB of WebAssembly the first time and nothing after that, then runs FFmpeg on your own machine.
- Save the ASF file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting OGV to ASF lose quality?#
It depends on what is inside the file. OGV is a container rather than a codec, so whether the ASF conversion copies the streams across untouched or re-encodes them is decided by the codecs that particular file happens to use.
Is it safe to convert OGV files online?#
Yes, because nothing is uploaded. FileFlip converts OGV files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What OGV to ASF actually does to the file#
Converting OGV to ASF runs on FFmpeg, downloads 30.8 MB of WebAssembly the first time and nothing after that, re-encodes or copies through depending on the codecs in the file, and drops encoded streams.
| Engine | FFmpeg |
|---|---|
| Conversion path | One step: OGV → ASF |
| Downloaded to your browser | 30.8 MB, once, then cached by your browser |
| Quality | Decided by the codecs inside the file |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| Encoded streams | Dropped | The target format has nowhere to put it. |
What is an OGV file?#
An OGV file holds video wrapped in Xiph.Org's Ogg container, almost always Theora-encoded video paired with Vorbis audio, built as a patent-free alternative at a time when H.264 carried real licensing costs.
Reach for OGV only when a target system specifically requires Ogg Theora, such as older Wikimedia tooling or a free-software media pipeline that has not moved on.
Convert OGV to MP4 or WebM for anything that needs to play in a current browser, since native Theora support has been dropped from both Chrome and Firefox.
What is an ASF file?#
An ASF file is Microsoft's Advanced Systems Format container, the streaming-oriented wrapper that holds Windows Media Video and Windows Media Audio content along with its own metadata and digital rights management.
Keep video as ASF, meaning WMV, only when it needs to play through Windows Media Player or a Windows Media streaming server that already expects it.
Convert ASF to MP4 for playback on anything that isn't Windows, since MP4 with H.264 plays natively on phones, browsers, and non-Microsoft software where ASF often doesn't.
OGV to ASF questions people ask#
What plays OGV files today?
VLC opens OGV files on Windows, macOS and Linux without any extra codecs, since it bundles its own Theora and Vorbis decoders. mpv and GNOME Videos on Linux handle it the same way. Neither Chrome nor current Firefox will play an OGV file dropped straight into the browser any more.
Does Wikipedia still use OGV?
Wikimedia sites used OGV as their standard video format for years because Theora and Vorbis carry no patent licensing, matching the free-content mission of the projects. Wikimedia has since moved to VP9 for new video, though a large amount of older OGV footage remains on Wikimedia Commons.
Is Ogg the same thing as OGV?
Ogg is the container format, and OGV is the specific case of an Ogg file holding a Theora video stream, the same way MP4 is a container and M4V is one particular use of it. A plain .ogg extension more often holds Vorbis audio with no video track at all.
What produces an ASF file?
ASF is the container underneath Windows Media Video and Windows Media Audio, so it comes from software that exports WMV or WMA, from Windows Media Encoder recordings, and occasionally from a file saved with the plain .asf extension when it holds mixed content rather than just one stream type.