MP4 to AVI Converter

Convert MP4 video files to AVI format

Related Tags
Files 80 FFmpeg 28 Video 27 Transcode 21 MP4 13

Convert MP4 videos to AVI container format while preserving video and audio quality. Supports all common video codecs including H.264, H.265, and MPEG-4.

Click to upload file or drag and drop file here

Maximum file size: 100MB Supported formats: video/mp4, video/x-m4v

Only applies when re-encoding. 18-28 is recommended range

Key Facts

Category
Images, Audio & Video
Input Types
file, select, number
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

Easily convert your MP4 video files to the AVI container format while maintaining high-quality video and audio. This online converter supports direct stream copying for lossless container swapping, as well as advanced re-encoding options using H.264, H.265, or MPEG-4 video codecs and MP3, AC3, or AAC audio codecs.

When to Use

  • •When you need to play video files on legacy media players or hardware devices that only support the AVI container.
  • •When you want to change the container from MP4 to AVI without re-encoding the underlying video and audio streams to save time and preserve quality.
  • •When you need to transcode an MP4 video to specific legacy codecs like MS MPEG-4 or DivX for compatibility with older editing software.

How It Works

  • •Upload your MP4 or M4V video file up to the 500MB limit.
  • •Choose your preferred video and audio codecs, or select 'Copy' to change the container without re-encoding.
  • •Adjust the CRF quality value if you are re-encoding the video stream.
  • •Click convert to process the file and download your finished AVI video.

Use Cases

Converting modern H.264 MP4 videos to AVI format for playback on older standalone DVD players or car entertainment systems.
Remuxing MP4 files to AVI containers instantly by copying the video and audio streams without CPU-heavy transcoding.
Compressing and transcoding high-definition MP4 videos using H.265 or MPEG-4 codecs with custom CRF quality control.

Examples

1. Lossless Container Swap (Remuxing)

Video Archivist
Background
A video archivist has a collection of MP4 videos that need to be stored in AVI containers for compatibility with an older database system, but they cannot afford any loss in video or audio quality.
Problem
Changing the file container from MP4 to AVI without triggering a lossy re-compression process.
How to Use
Upload the MP4 file, select 'Copy (No Re-encoding)' for both the Video Codec and Audio Codec options, and run the conversion.
Example Config
Video Codec: copy, Audio Codec: copy
Outcome
The video is instantly converted to an AVI file with identical video and audio streams, preserving 100% of the original quality.

2. Legacy Device Compatibility Transcoding

Multimedia Hobbyist
Background
A hobbyist wants to play a modern MP4 video on a legacy media player that only supports AVI files encoded with the MPEG-4 video codec and MP3 audio.
Problem
The original MP4 uses codecs that the legacy player cannot decode.
How to Use
Upload the MP4 video, select 'MPEG-4' as the Video Codec, 'MP3' as the Audio Codec, and set the CRF Quality to 22.
Example Config
Video Codec: mpeg4, Audio Codec: mp3, CRF Quality: 22
Outcome
A compatible AVI video file is generated that plays perfectly on the legacy hardware player with clear audio and video.

Try with Samples

audio, video, file
WebRTC Real-Time Communication Samples
Comprehensive WebRTC samples for peer-to-peer audio/video communication, data channels, screen sharing, and signaling server implementation
preferred input family video
video
Video AV1 Samples
Sample video files encoded in AV1 format
preferred input family video
video
Video H.264 Samples
Sample video files encoded in H.264 (AVC) format
preferred input family video
video
Video H.265 Samples
Sample video files encoded in H.265 (HEVC) format
preferred input family video
video

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FAQ

Can I convert MP4 to AVI without losing quality?

Yes, by setting both the video and audio codecs to 'Copy (No Re-encoding)', the streams are transferred directly into the AVI container without quality loss.

What is the maximum file size supported?

You can upload and convert MP4 video files up to 500 MB in size.

Which video codecs are supported for re-encoding?

The converter supports H.264, H.265/HEVC, MPEG-4, MS MPEG-4 V2, and MS MPEG-4 V3 (DivX).

What does the CRF quality setting do?

The Constant Rate Factor (CRF) controls video quality during re-encoding, where a lower value (between 18 and 28) yields higher quality but larger file sizes.

Can I convert M4V files?

Yes, the tool accepts both standard MP4 and M4V video formats as inputs.

API Documentation

Request Endpoint

POST /en/api/tools/mp4-to-avi

Request Parameters

Parameter Name Type Required Description
videoFile file (Upload required) Yes -
videoCodec select No -
audioCodec select No -
quality number No Only applies when re-encoding. 18-28 is recommended range

File type parameters need to be uploaded first via POST /upload/mp4-to-avi to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-mp4-to-avi": {
      "name": "mp4-to-avi",
      "description": "Convert MP4 video files to AVI format",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=mp4-to-avi",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]