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Convert FLV to OPUS

Extract the audio from FLV videos and save it as OPUS — ideal for voice messages, calls and streaming at low bitrates.

  • 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 OPUS

    1. 1

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

    2. 2

      Check that OPUS 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 OPUS downloads automatically. Converting several files? Grab them all as a ZIP.

    FLV vs OPUS

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

    FLVOPUS
    Full nameFlash VideoOpus Audio
    TypeVideoAudio
    CompressionLossyLossy
    Developed byAdobeIETF / Xiph.Org
    Introduced20022012
    Plays on iPhone✕ No◐ Partly / with an app
    Plays on Android◐ Partly / with an app✓ Yes
    Plays on Windows◐ Partly / with an app✓ Yes
    Plays on Mac✕ No✓ Yes

    About FLV and OPUS

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

    OPUS: Opus is a modern, highly efficient codec used by WhatsApp voice notes, Discord, Zoom and WebRTC calls. It sounds excellent even at very low bitrates.

    Frequently asked questions

    How do I convert FLV to OPUS on my phone?
    Open this page in your phone's browser (Safari, Chrome, Samsung Internet), tap Choose files, pick your FLV, make sure OPUS is selected and tap Convert. The OPUS file is saved to your Downloads.
    Will converting FLV to OPUS reduce quality?
    Only the sound is kept — the picture is dropped, so the OPUS 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 OPUS 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 WEBAFLV to WMAFLV to AIFFFLV to AC3FLV to CAF

    Convert other formats to OPUS

    MP3 to OPUSM4A to OPUSM4R to OPUSAAC to OPUSALAC to OPUSWAV to OPUSFLAC to OPUSOGG to OPUSWEBA to OPUSWMA to OPUSAIFF to OPUSAC3 to OPUSCAF to OPUSAMR to OPUS3GA to OPUSAPE to OPUSMP4 to OPUSMOV to OPUSMKV to OPUSWEBM to OPUSAVI to OPUSWMV to OPUS3GP to OPUSM4V to OPUSMPG to OPUSTS to OPUSGIF to OPUSMTS to OPUSVOB to OPUSHEVC to OPUSRMVB to OPUS

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