MP4 to AVI Converter
Convert your MP4 video into high-quality AVI format with 100% Secure processing. No files are uploaded to our servers.
or drag and drop your MP4 files here
Popular MP4 Conversions
Direct 1-Click Fast PresetsHow to Convert MP4 to AVI?
Convert your video files in seconds with zero software installation and 100% Secure local processing.
Select MP4 Video
Click the "Choose MP4 Files" button or drag and drop your MP4 video file into the drop zone.
Configure Target & Settings
Verify that AVI is selected. Adjust optional parameters (such as frame rate), then click "Convert to AVI".
Instant Secure Download
Once the 100% Secure conversion finishes locally in memory, click "Download AVI" to save your file immediately.
MP4 (MPEG-4 Part 14)
Source FormatWhat is a MP4 file?
MP4 is the most universally compatible digital multimedia container format. Commonly used to store video and audio streams, subtitles, and still images, MP4 offers high-definition quality with efficient compression across all consumer devices and web platforms.
How to open a MP4 file?
MP4 files open natively on virtually every modern platform, including Windows Media Player, QuickTime Player, VLC Media Player, iPhone, Android, and all web browsers.
AVI (Audio Video Interleave)
Target OutputWhat is a AVI file?
AVI is a multimedia container format introduced by Microsoft as part of Video for Windows. AVI files contain both audio and video data in a file container that allows synchronous audio-with-video playback.
How to open a AVI file?
Opens in Windows Media Player, VLC, and most standard third-party desktop media players.
Your Videos Never Touch Our Servers
Video files often contain personal moments, family memories, or confidential business recordings. SM Convert processes every video locally using your computer's secure memory and WebAssembly engine. No uploads, zero cloud servers, complete privacy.
100% Client-Side
Executed locally in RAM
Instant Audio Extraction
Extract MP3/WAV in seconds
Unlimited & Free
No subscription fees or quotas
Other MP4 Video Converters
Convert Other Video Formats to AVI
Frequently Asked Questions (FAQs)
How can I convert videos to MP4 or WebM online?
Simply drag and drop your video file (MOV, MKV, AVI, etc.) into the converter above, choose MP4 or WebM as your output format, and click "Convert Video". The conversion processes locally on your computer with zero server uploads.
How can I extract audio (MP3/WAV) from my video?
Select your video (MP4, MOV, WebM, etc.), choose MP3 or WAV in the format dropdown, and click convert. The audio track is separated and saved locally in seconds.
What is the maximum video file size I can convert?
Because processing runs locally with 100% Secure execution without server uploads, files under 200 MB to 500 MB convert with optimal speed and performance depending on your device's available RAM.
Are my video files stored on any cloud server?
Never. Your video files are processed strictly inside your device's secure memory using WebAssembly and Web Audio APIs. They are never transmitted over the internet or saved to any external hard drives.