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Convert FLV to AC3

Extract the audio from FLV videos and save it as AC3 — ideal for home theatre and surround sound.

  • No upload — 100% private
  • Fast, lossless when possible
  • Free & unlimited
  • Works on iPhone & Android

    Quality
    Advanced options
    Trim (optional)
    Use minutes:seconds, e.g. 1:05.5

    How to convert FLV to AC3

    1. 1

      Tap Choose files and select one or more FLV files (or drag them in).

    2. 2

      Check that AC3 is selected. Use Advanced options for bitrate, channels or trimming.

    3. 3

      Press Convert. Everything happens on your device — no upload, no waiting in a queue.

    4. 4

      Your AC3 downloads automatically. Converting several files? Grab them all as a ZIP.

    FLV vs AC3

    Only the sound is kept — the picture is dropped, so the AC3 file is far smaller than the FLV video.

    FLVAC3
    Full nameFlash VideoDolby Digital (AC-3)
    TypeVideoAudio
    CompressionLossyLossy
    Developed byAdobeDolby Laboratories
    Introduced20021991
    Plays on iPhone✕ No◐ Partly / with an app
    Plays on Android◐ Partly / with an app◐ Partly / with an app
    Plays on Windows◐ Partly / with an app✓ Yes
    Plays on Mac✕ No✓ Yes

    About FLV and AC3

    FLV: FLV is the Flash Video format that powered early YouTube. Flash is gone, so FLV files usually need converting to play today.

    AC3: AC3 is Dolby Digital surround sound, used on DVDs, Blu-rays and TV broadcasts. It supports up to 5.1 channels.

    Frequently asked questions

    How do I convert FLV to AC3 on my phone?
    Open this page in your phone's browser (Safari, Chrome, Samsung Internet), tap Choose files, pick your FLV, make sure AC3 is selected and tap Convert. The AC3 file is saved to your Downloads.
    Will converting FLV to AC3 reduce quality?
    Only the sound is kept — the picture is dropped, so the AC3 file is far smaller than the FLV video.
    Can I convert only part of the FLV?
    Yes. Open Advanced options → Trim and enter a start and end time.
    Is this FLV to AC3 converter free?
    Yes — completely free with no limits on the number of files, no watermark and no account. The site is supported by ads.
    Are my files uploaded to a server?
    No. The converter runs inside your browser using WebAssembly, so your files never leave your device. That's also why it works for private and confidential recordings.

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    Convert FLV to other formats

    FLV to MP4FLV to MOVFLV to MKVFLV to WEBMFLV to AVIFLV to WMVFLV to 3GPFLV to M4VFLV to MPGFLV to TSFLV to GIFFLV to MP3FLV to M4AFLV to M4RFLV to AACFLV to ALACFLV to WAVFLV to FLACFLV to OGGFLV to OPUSFLV to WEBAFLV to WMAFLV to AIFFFLV to CAF

    Convert other formats to AC3

    MP3 to AC3M4A to AC3M4R to AC3AAC to AC3ALAC to AC3WAV to AC3FLAC to AC3OGG to AC3OPUS to AC3WEBA to AC3WMA to AC3AIFF to AC3CAF to AC3AMR to AC33GA to AC3APE to AC3MP4 to AC3MOV to AC3MKV to AC3WEBM to AC3AVI to AC3WMV to AC33GP to AC3M4V to AC3MPG to AC3TS to AC3GIF to AC3MTS to AC3VOB to AC3HEVC to AC3RMVB to AC3

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