AVI to MP4 Converter

Convert AVI video files to MP4 format

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

Convert AVI videos to MP4 format, the most widely supported video format. MP4 offers excellent compatibility with all modern devices, browsers, and media players while maintaining good quality and compression.

Click to upload file or drag and drop file here

Maximum file size: 100MB Supported formats: video/x-msvideo, video/avi, video/x-divx

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 AVI video files into the highly compatible MP4 format. This tool allows you to transcode your videos using modern codecs like H.264 or H.265, adjust audio settings, and fine-tune compression quality (CRF) to ensure seamless playback across all modern devices, browsers, and media players.

When to Use

  • •When you have legacy AVI video files that won't play on mobile devices, tablets, or modern web browsers.
  • •When you need to compress large AVI files into a more efficient MP4 container to save storage space or reduce upload times.
  • •When preparing video assets for web streaming or social media platforms that strictly require MP4 containers with H.264/AAC encoding.

How It Works

  • •Upload your AVI video file (up to 500MB) into the converter.
  • •Select your preferred video and audio codecs, such as H.264 and AAC, or choose 'Copy' to change the container without re-encoding.
  • •Optionally set a CRF quality value between 0 and 51 to control the compression level, then click convert to generate your MP4 file.

Use Cases

Converting old family videos recorded in AVI format to MP4 for easy sharing and playback on iPhones and Android devices.
Optimizing raw AVI video captures from legacy cameras into web-ready MP4 files using H.264 and AAC codecs.
Remuxing AVI files to MP4 containers instantly by copying the streams without re-encoding to save time and CPU power.

Examples

1. Optimizing Legacy AVI Videos for Web Streaming

Web Developer
Background
A developer needs to embed an old product demonstration video, currently in AVI format, onto a company landing page.
Problem
The AVI file is too large and does not play natively in modern HTML5 video players on browsers like Safari and Chrome.
How to Use
Upload the AVI file, select 'H.264 (Recommended for MP4)' as the Video Codec, 'AAC' as the Audio Codec, and set the CRF Quality to 22.
Example Config
Video Codec: libx264, Audio Codec: aac, CRF Quality: 22
Outcome
The video is converted to a highly compressed, web-compatible MP4 file that plays smoothly on all modern browsers.

2. Lossless Container Conversion

Video Editor
Background
An editor has an AVI file with compatible internal streams but needs it in an MP4 container for import into a specific editing suite.
Problem
Re-encoding the video would degrade the quality and take too much time.
How to Use
Upload the AVI file, select 'Copy (No Re-encoding)' for both Video Codec and Audio Codec, then run the conversion.
Example Config
Video Codec: copy, Audio Codec: copy
Outcome
The file container is instantly changed to MP4 without any quality loss or time-consuming re-encoding.

Try with Samples

audio, video, file
Video H.264 Samples
Sample video files encoded in H.264 (AVC) format
preferred input family video
video
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.265 Samples
Sample video files encoded in H.265 (HEVC) format
preferred input family video
video

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FAQ

Can I convert AVI to MP4 without losing quality?

Yes, you can set the Video Codec and Audio Codec to 'Copy' to change the container format without re-encoding, preserving the original quality.

What is the recommended CRF quality range?

A CRF value between 18 and 28 is recommended, where lower values yield better quality but larger file sizes.

Which video codec should I choose for maximum compatibility?

H.264 (libx264) combined with AAC audio is highly recommended for universal compatibility across all modern devices and web browsers.

What is the maximum file size supported by this converter?

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

Can I convert to H.265/HEVC using this tool?

Yes, you can select 'H.265/HEVC' (libx265) from the Video Codec options to achieve higher compression efficiency.

API Documentation

Request Endpoint

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

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/avi-to-mp4 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-avi-to-mp4": {
      "name": "avi-to-mp4",
      "description": "Convert AVI video files to MP4 format",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=avi-to-mp4",
      "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]