Step 1: Supply your FLV files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted MP3 files.
FLV to MP3 Conversion FAQ
How do I extract the audio from a FLV as MP3?
+
Upload the FLV file and the converter demuxes the audio track, then re-encodes it as MP3. No re-encoding of the video happens — only the audio stream is processed, which keeps it fast even on long videos.
Will the audio quality match the original FLV track?
+
Yes — the audio is extracted at the source bitrate where possible. If you pick a higher MP3 bitrate than the source, the file will not improve in quality, just grow in size.
Is the FLV to MP3 conversion reversible?
+
You can convert the MP3 back to FLV on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
What output quality should I expect from FLV to MP3?
+
Default settings target broadcast / web quality — visually identical to the source for most viewers. For archival use, pick the highest quality option in the converter settings.
Is converting FLV to MP3 a second round of lossy compression?
+
Yes, and it is worth planning around. Both formats are lossy, so the MP3 encoder is working from audio that has already been through one psychoacoustic pass, and its own decisions compound the first set. At 192 kbps or above the result is still transparent for most listening. If you have a lossless master anywhere, encoding the MP3 from that instead avoids the double pass entirely. FLV typically holds Sorenson Spark or H.264 video with MP3 or AAC audio, wrapped in a stream format designed for RTMP delivery. MP3 is lossy: a psychoacoustic model discards frequencies the ear is unlikely to notice, typically at 128 to 320 kbps.
Can I tag the MP3 with artist and album information?
+
Yes, and it is a genuine gain over FLV, which has nowhere dependable to store any of it. MP3 carries title, artist, album, year, track number and embedded cover art in the container itself, so a music library files it correctly without a manual pass. Nothing beats MP3 for compatibility — car stereos, gym equipment, DAPs and twenty-year-old hardware all read it without question.
Is there a file-size limit when converting FLV to MP3?
+
Anonymous uploads are capped at a generous default; signed-in free accounts get a higher cap, and Pro accounts have no per-file limit. Browser memory is usually the practical constraint long before our server-side limits kick in.
Can I batch-convert several FLV files to MP3 at once?
+
Yes. Drop or pick multiple FLV files in one upload — the converter processes them in parallel and returns a ZIP of the MP3 results. There is no need to repeat the upload step per file.
What happens to my FLV files after the conversion?
+
Uploaded files and MP3 outputs are auto-deleted after a short retention window. We do not inspect, share, or train on user files. Direct download links are time-limited and tied to your session.
What apps can play a MP3 file?
+
MP3 plays in most music players, browsers, and media libraries. iTunes / Apple Music, VLC, Foobar2000, and phone media apps handle it natively.
Do I need to install software to convert FLV to MP3?
+
No. The converter runs entirely in your browser plus our cloud — no plugin, no install, no admin rights. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.
Do I need an account to convert FLV to MP3?
+
No. FLV to MP3 conversion is free and works without an account. Signing in unlocks higher file-size caps, batch history, and API access.
