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Convert AVI videos to MP4 format for maximum compatibility with all devices and players.
Upload your AVI file, click Convert, and download the MP4 output. Video is encoded with H.264 and audio with AAC.
Upload your AVI file
Drop a .avi video file onto the upload zone. The file is processed using FFmpeg running in your browser.
Set quality (optional)
Choose output quality. Higher quality produces larger files; lower quality saves storage space.
Convert
Click "Convert to MP4". FFmpeg re-encodes the video using H.264 codec for maximum compatibility.
Download
Save the MP4 to your device. Play it on any device, upload to YouTube, or share via messaging apps.
Mobile Playback
Convert AVI files to MP4 so they play natively on iPhones, Android phones, and tablets without extra apps.
YouTube Upload
MP4 with H.264 is YouTube's preferred upload format — convert AVI for faster processing and better quality.
Browser Streaming
MP4 streams directly in any browser; AVI requires plugins or desktop players.
Video Editing
Many modern editors (DaVinci Resolve, Premiere) work faster with MP4 H.264 than legacy AVI files.
Sharing & Messaging
MP4 files are smaller than AVI for the same quality, making them easier to share via email or messaging apps.
Smart TV Playback
Smart TVs and Chromecast support MP4 natively — convert AVI files before casting to your television.
H.264 + AAC Encoding
Output uses H.264 video and AAC audio — the most compatible codec pair supported by every device and platform.
100% Browser-Based
FFmpeg runs via WebAssembly in your browser — no upload, no server, complete privacy for your video files.
Fast Start Flag
The -movflags +faststart flag moves metadata to the file start so MP4 begins playing before fully downloading.
No File Size Limits
Conversion runs locally so there are no server-enforced upload size restrictions on your AVI files.
Universal Output
The resulting MP4 plays on every device — iOS, Android, Windows, Mac, smart TVs, and all browsers.
Free to Start — Sign Up for More
Use free with no account for files up to 40 MB. Sign up free to raise your limit to 80 MB, or upgrade to Pro for 250 MB per file.
Also Known As
AVI to MKV
Convert AVI videos to MKV format
AVI to MOV
Convert AVI videos to MOV format
AVI to MP3
Extract audio from AVI and save as MP3
Change Video Speed
Speed up or slow down video playback
Compress Video
Compress video file size without losing quality
Extract Audio from Video
Extract high-quality audio from any video file
Trusted Worldwide
iLoveDocsTools is used by students, professionals, and businesses across the United States, Canada, United Kingdom, Australia, India, and more than 100 other countries. All tools are browser-based and process files privately — your files never leave your device. Free to use, with Pro plans for unlimited access.
All processing happens directly in your browser. Your documents are never sent to any server — complete privacy guaranteed for users in the USA, Canada, UK, and worldwide.
Every tool on iLoveDocsTools is free to use. Need more? Upgrade to Pro for unlimited usage, priority access, and no daily limits. Trusted by students, freelancers, and teams across North America and Europe.
Whether you are on a Mac, Windows PC, iPhone, or Android in New York, Toronto, London, or Sydney — our tools work instantly in any modern browser.
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