Add your FLV file
Drop one or more .flv files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
FLV to MPEG
Pulling the soundtrack out of a .flv video into .mpeg audio keeps what you can hear and drops the picture entirely. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop FLV files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Flash video to MPEG video
Pulling the soundtrack out of a .flv video into .mpeg audio keeps what you can hear and drops the picture entirely. An .flv file is a Flash Video container, the format that powered most web video during the 2000s. YouTube, news sites, and early streaming platforms delivered .flv streams into the Flash Player plugin before HTML5 video replaced the whole stack.
An .mpeg file holds an MPEG program stream: video and audio multiplexed together using the original MPEG-1 or MPEG-2 standards. These files come from Video CDs, DVD-authoring workflows, and older capture hardware, and they remain readable by virtually every conversion tool. For this route the practical draw is universally decodable, with all underlying patents expired and simple, robust structure that tools have parsed for thirty years — balanced against mPEG-1 and MPEG-2 need roughly twice the bitrate of H.264 for comparable quality, which is worth knowing before you commit a large batch.
Why convert FLV to MPEG?
The usual reason to take .mpeg audio out of a .flv file is that only the sound matters — a talk, interview, song, or podcast segment. Keeping the video stream would waste storage, and a dedicated audio file is easier to trim, tag, and play. On the source side, no mainstream player ships FLV support anymore; on the target side, the payoff is universally decodable, with all underlying patents expired, which is exactly what you want for handling digitized VHS or Video CD content.
FLV vs MPEG at a glance
| Aspect | Flash video (.flv) | MPEG video (.mpeg) |
|---|---|---|
| Format type | Container — quality depends on the codecs and settings inside | Container — quality depends on the codecs and settings inside |
| How it stores data | a simple sequence of tagged audio, video, and script packets designed for progressive download and RTMP streaming | program streams were engineered for reliable storage media, in contrast to the error-hardened transport stream used for broadcast |
| Strongest at | recovering clips downloaded during the Flash era | handling digitized VHS or Video CD content |
| Weak spot | no mainstream player ships FLV support anymore | mPEG-1 and MPEG-2 need roughly twice the bitrate of H.264 for comparable quality |
| Metadata | an onMetaData script tag embeds duration, dimensions, and encoder details; there is no standard field set for titles or authorship | the program stream carries essentially no descriptive metadata; the specification predates any notion of embedded titles or tags |
Pick MPEG as the output
Select .mpeg in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if MPEG is selectable, the route is real and validated.
Convert on your device
Press Convert. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid MPEG file. Outputs keep the original filename with the .mpeg extension.
FLV to MPEG questions, answered
Will converting FLV to MPEG lose quality?
Since flv is container-oriented and mpeg is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .mpeg itself requires.
Is it private to convert FLV files here?
Yes — the .flv file is processed inside your browser tab and never uploaded. A WebAssembly FFmpeg build demuxes the audio track and re-encodes it locally; the video stream is simply discarded. Close the tab and the file is gone from memory.
Where will the MPEG file work?
Desktop players on every operating system decode MPEG-1 and MPEG-2 program streams, and no licensing barriers remain. Browsers never adopted the format for the HTML5 video element, so web delivery requires conversion first.
Will the MPEG file be bigger or smaller than my FLV?
Much smaller — the video stream is usually 80–95% of a .flv file's weight, and it is discarded entirely. The remaining audio is re-encoded at the bitrate implied by your quality setting.
What happens to the metadata in my FLV file?
This converter strips container metadata deliberately (the FFmpeg command runs with metadata mapping disabled) so exported files do not leak recording details. In the source, an onMetaData script tag embeds duration, dimensions, and encoder details; there is no standard field set for titles or authorship; none of it is transmitted anywhere because the file never leaves your browser.
Can I convert MPEG back to FLV?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .flv → .mpeg → .flv is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.