AVI to MP4 Converter
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Upload Video
Drag & drop or click to select a video file
- Upload an AVI file.
- Optionally trim the time range.
- Click Convert and wait for completion.
- Download the MP4 file.
AVI is outdated - why convert it?
AVI is a 1990s container with poor compression, huge files, and few features. MP4/H.264 is the modern replacement: better quality at smaller sizes.
AVIOld devices, legacy footage
Legacy format, little or no modern compression, very large.
MP4 (H.264)All modern playback and sharing
Modern standard, small and widely compatible.
Tip
New projects rarely need to produce AVI anymore.
Help
FAQ
Why is AVI conversion slow?ShowHide
Many AVI files require transcoding. In-browser transcoding can be slow for large videos.
Is my file uploaded?ShowHide
No. The conversion runs locally by default.
How to convert AVI to MP4
- Upload an AVI file.
- Optionally trim the time range.
- Click Convert and wait for completion.
- Download the MP4 file.
Privacy
Full guide
AVI to MP4 Converter
Convert legacy AVI videos to modern MP4 format for better device compatibility.
Features
- Legacy Format Support: Handle old AVI files from various sources
- Time Trimming: Extract only the segments you need
- Quality Options: Adjust output quality and file size
- 100% Local Processing: All conversion happens in your browser
Supported Formats
Input: AVI, DivX, XviD video files
Output: MP4 (H.264/AAC)
Tips
- AVI files usually require transcoding (slower than remux)
- Old codecs like DivX/XviD are supported
- Consider trimming large files before conversion