F4V to OPUS converter
Extract OPUS audio from F4V video in seconds, free. No upload, no sign-up, no size limit: it runs in your browser.
Last updated
Quick answer: To extract OPUS audio from F4V video, add the F4V file to the iHateFiles F4V to OPUS converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. Lifts the soundtrack out of the video and saves it as OPUS. The picture is discarded; nothing is re-recorded.
Should you convert F4V to OPUS?
Worth doing when you want the soundtrack of a F4V on its own: a podcast, an interview, a piece of music from a video. Choose a higher bitrate than you think you need, because the OPUS is encoded from the video's audio rather than from a master.
Taking the sound out of F4V
A F4V file holds a picture track and a sound track side by side. This keeps the sound and discards the picture, so what you get is the OPUS on its own at whatever bitrate you choose. Nothing about the F4V original is altered.
F4V and OPUS side by side
| F4V | OPUS | |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | No | No |
| Animation | No | No |
| Written here | No | Yes |
What usually goes wrong
About the F4V. Renaming .f4v to .mp4 very often just works, because it already is one.
About the OPUS. Opus at 64 kbps sounds better than MP3 at 128, so the bitrate you are used to is roughly double what you need here.
How to convert F4V to OPUS
- Add your F4V file. It is read from your disk and stays there.
- Check the settings. The output format is already set to OPUS.
- Press convert and the OPUS file is saved back to your device.
Questions
How do I convert F4V to OPUS?
Open this page, add your F4V file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this F4V to OPUS converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Does extracting audio reduce the quality?
The soundtrack is re-encoded to OPUS, so there is one generation of loss at the bitrate you choose. Pick a higher bitrate, or a lossless target like WAV or FLAC, to avoid it.
Can I convert several F4V files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.