Video conversion
Convert FLV to M4A
Updated Jul 2026
FLV is an old Flash Video format that bundles video and audio together, so converting it to M4A means pulling out just the audio track and saving it as a standalone audio file. A desktop converter can do this on your own computer, without uploading the video anywhere.
- Extension
- .flv
- Type
- Video
- Typically
- Legacy web video
- Compression
- Lossy
- Extension
- .m4a
- Type
- Audio
- Typically
- iTunes / voice memos
- Compression
- Lossy
Convert FLV to M4A on your own computer. Nothing uploads.
How to convert FLV to M4A
- Open Morphjet and drag in the FLV file, or a whole folder of them, that you want to pull the audio from.
- Choose M4A as the output format.
- Convert. Morphjet extracts the audio track and writes the M4A file next to your original, nothing leaves your machine.
FLV vs M4A: what actually changes
| FLV | M4A | |
|---|---|---|
| Contains video | Yes, video plus audio | No, audio only |
| File size | Larger, holds both streams | Much smaller, audio only |
| Playback support | Limited, Flash is discontinued and needs an older player | Wide, plays natively in iTunes, Windows Media Player, and phones |
| Audio quality | Depends on the original encoding, often an older compressed codec | Same if the audio was already AAC, a small loss if re-encoded from another codec |
| Tags (title, artist) | Rarely used | Supported, you can add title and artist info |
When to convert, and when not to
Convert FLV to M4A when you have an old FLV video, maybe a downloaded lecture, interview, or music video, and only want the audio to listen to on your phone or add to your music library.
Keep the FLV if you still need to watch the video itself, since converting to M4A discards the picture entirely.
Why not just use an online converter?
FLV files from years ago sometimes hold recordings you'd rather not hand to a stranger's server, an old voice memo disguised as a webcam clip, a personal video pulled off a defunct site. Uploading it to an online converter means that audio sits on someone else's machine, if only briefly. Converting on your own computer keeps the whole file right where it already is.
Questions
Does converting FLV to M4A keep the video?
No. M4A is an audio-only format, so the picture is discarded and you're left with just the sound. If you need the video too, convert to a video format instead.
Will the audio quality change?
It depends on how the audio was originally encoded inside the FLV. If it was already AAC, the audio carries over almost unchanged. If it used an older codec, converting to M4A means a re-encode, which causes a small, one-time quality loss.
Can I convert FLV to M4A without uploading it anywhere?
Yes. A desktop app does the extraction on your own computer, so the file never has to travel over the internet, your wifi can even be off.
Will the M4A play on an iPhone or in iTunes?
Yes. M4A is the standard format for iTunes and Apple's Voice Memos, so it plays natively on iPhone, iPad, and Mac without any extra software.
Why do I even have an FLV file?
FLV was the standard format for web video in the Flash era, used widely by video sites until around the mid-2010s. Old downloads, screen recordings, or archived clips from that time are often still in FLV.
Morphjet converts FLV, M4A, and 1,800+ other formats, all on your machine. Launching this July.