M4V to OGG converter
Pull the sound out of your M4V and keep it as an OGG, leaving the picture behind. OGG is a free audio format that sounds better than MP3 at the same file size, and the gap widens as files get smaller. The practical difference is that the result opens anywhere, which M4V files do not. Your file never leaves your computer.
How to convert M4V to OGG
- 1 Drop your M4V .m4v file onto the page, or click to browse for it.
- 2 Choose the sound quality, or lift the existing track out untouched where that is possible.
- 3 Convert. The work happens on your own machine, so how long it takes depends on your computer and the file.
- 4 Download the OGG, or add more files and do the whole set in one go.
Why convert M4V to OGG
- An M4V will not open in a browser, so anything going onto a web page, into a document or into a message has to become an OGG first.
- You only want the sound: a lecture, an interview, a podcast that was filmed, or a track to listen to with the screen off.
- Patent free and open, with no licensing to worry about.
- Better quality than MP3 at the same file size.
- Streaming radio, where bandwidth is limited.
M4V compared with OGG
How the two formats differ on the things that decide whether a conversion is worth making.
| Property | M4V | OGG |
|---|---|---|
| File extension | .m4v | .ogg |
| Browser support | Some browsers | All current browsers |
| Introduced | 2005 | 2000 |
| Developed by | Apple | Xiph.Org Foundation |
| Standard | Proprietary | Open |
Quality and what changes
Whether anything is lost depends on the codec. If the track already matches the target, it can be copied out untouched and the audio is bit for bit what was in the M4V. Choosing a different codec means decoding and re-encoding, which is a second generation of lossy compression on top of whatever the video already applied. Encoding at 192 kbps or above keeps that second generation inaudible for most material.
- Files protected with DRM cannot be decoded and will fail rather than convert.
- One OGG limitation to keep in mind: apple devices and many car stereos will not play it.
Questions about M4V to OGG
Will converting M4V to OGG lose quality?
A little. Both formats are lossy, so the file is decoded and compressed a second time and the two sets of artefacts add up. At a high quality setting the difference is hard to see, but avoid repeated round trips between lossy formats.
Does extracting the audio re-encode it?
Only when the target codec differs from the one in the M4V. Where they match, the track is copied and the result is identical to the audio inside the video. Converting to a different codec means one extra generation of lossy compression.
Is my M4V file uploaded anywhere?
No. The whole thing runs inside the browser tab you already have open. Your M4V is read straight from your own disk, converted on your machine and handed back as an OGG. Nothing is sent anywhere, nothing is stored and there is no account.
Is there a file size limit?
There is no server-side limit because no server sees the file. The real ceiling is your device memory, since the input and the output both have to fit in the tab. A few hundred megabytes is usually fine on a desktop machine and considerably less on a phone.
Can I convert several M4V files at once?
Yes. Add as many as you like and they are processed one after another, then offered as separate OGG downloads or as a single ZIP. Speed depends on your own processor rather than on a queue.
Does the converter work offline?
Yes, after the page has loaded once. The engine is cached by the browser, so you can disconnect, reload and keep converting. That falls out of doing the work locally rather than being a separate mode you switch on.