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Convert RMVB to CAF

Extract the audio from RMVB videos and save it as CAF — ideal for iOS app sounds and Apple developer workflows.

  • 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 RMVB to CAF

    1. 1

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

    2. 2

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

    RMVB vs CAF

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

    RMVBCAF
    Full nameRealMedia Variable BitrateCore Audio Format
    TypeVideoAudio
    CompressionLossyLossless
    Developed byRealNetworksApple
    Introduced20032005
    Plays on iPhone✕ No✓ Yes
    Plays on Android✕ No✕ No
    Plays on Windows◐ Partly / with an app✕ No
    Plays on Mac✕ No✓ Yes

    About RMVB and CAF

    RMVB: RMVB is the RealMedia video format that was extremely popular for sharing movies in the 2000s.

    CAF: CAF is Apple's flexible audio container used inside iOS and macOS apps and by GarageBand. Files can be any length and hold many codecs.

    Frequently asked questions

    How do I convert RMVB to CAF on my phone?
    Open this page in your phone's browser (Safari, Chrome, Samsung Internet), tap Choose files, pick your RMVB, make sure CAF is selected and tap Convert. The CAF file is saved to your Downloads.
    Will converting RMVB to CAF reduce quality?
    Only the sound is kept — the picture is dropped, so the CAF file is far smaller than the RMVB video.
    Can I convert only part of the RMVB?
    Yes. Open Advanced options → Trim and enter a start and end time.
    Is this RMVB to CAF 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 RMVB to other formats

    RMVB to MP4RMVB to MOVRMVB to MKVRMVB to WEBMRMVB to AVIRMVB to FLVRMVB to WMVRMVB to 3GPRMVB to M4VRMVB to MPGRMVB to TSRMVB to GIFRMVB to MP3RMVB to M4ARMVB to M4RRMVB to AACRMVB to ALACRMVB to WAVRMVB to FLACRMVB to OGGRMVB to OPUSRMVB to WEBARMVB to WMARMVB to AIFFRMVB to AC3

    Convert other formats to CAF

    MP3 to CAFM4A to CAFM4R to CAFAAC to CAFALAC to CAFWAV to CAFFLAC to CAFOGG to CAFOPUS to CAFWEBA to CAFWMA to CAFAIFF to CAFAC3 to CAFAMR to CAF3GA to CAFAPE to CAFMP4 to CAFMOV to CAFMKV to CAFWEBM to CAFAVI to CAFFLV to CAFWMV to CAF3GP to CAFM4V to CAFMPG to CAFTS to CAFGIF to CAFMTS to CAFVOB to CAFHEVC to CAF

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