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M4V to AVI Converter

Convert M4V to AVI online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an M4V file?

The M4V file format is a video container format developed by Apple Inc., derived directly from the MPEG-4 Part 14 (MP4) specification. It is primarily utilized to encode video files-such as movies, TV episodes, and music videos-distributed through the Apple iTunes Store. Functionally similar to MP4, M4V files frequently employ Apple's FairPlay DRM (Digital Rights Management) protection to prevent unauthorized reproduction, though unprotected files exist. The container typically encapsulates H.264 or H.265 (HEVC) video data alongside AAC or Dolby Digital (AC-3) audio streams.

How to open an M4V file

Files protected by FairPlay DRM can only be decrypted and opened using Apple QuickTime Player or the Apple TV app on authorized devices associated with the purchasing Apple ID. Unprotected M4V files function identically to standard MP4 files and are natively supported on macOS. On Windows and Linux, unprotected M4V files can be opened by renaming the extension to .mp4 or by using cross-platform media players like VLC Media Player and MPC-HC without modification.

M4V Technical Info

Full Name
iTunes Video File
Developed By
Apple Inc.
Initial Release
2003
MIME Type
video/x-m4v

What is an AVI file?

Audio Video Interleave (AVI) is a multimedia container format introduced by Microsoft in 1992 as part of the Video for Windows technology. It adheres to the Resource Interchange File Format (RIFF) specification, storing audio and video data in tagged chunks (specifically 'movi' lists) to allow synchronous playback. While widely compatible, the legacy AVI architecture lacks native support for modern features found in MP4 or MKV, such as variable frame rates (VFR), B-frames, and sophisticated chapter markers. It typically utilizes codecs like DivX, Xvid, or MJPEG.

How to open an AVI file

AVI files enjoy broad compatibility on Windows via Windows Media Player. However, because AVI is a container that can hold various codecs (e.g., DivX, Xvid), playback may fail if the specific codec is missing. macOS users can view AVI files using QuickTime Player if the content is MJPEG, but third-party players are often required for other codecs. VLC media player and MPC-HC are standard recommendations for handling the vast array of codecs potentially encapsulated within an AVI file.

AVI Technical Info

Full Name
Audio Video Interleave
Developed By
Microsoft
Initial Release
1992
MIME Type
video/x-msvideo

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert M4V to AVI in seconds

Every M4V to AVI conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert M4V to AVI via API

Automate M4V to AVI conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "m4v-to-avi",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "avi"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.m4v

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.