AVI → MP4
Re-encodes AVI from dashcams, DVRs and old cameras as H.264 + AAC MP4 with faststart, restoring playback on phones, TVs and browsers.
Drag files here or click to upload (multiple files supported)
Ctrl+V to paste from clipboard
How to convert AVI to MP4
- 1Upload your AVI file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted MP4 file.
About AVI to MP4 conversion
AVI is a RIFF container introduced by Microsoft in 1992, without faststart index pre-positioning design, and is mostly used for dashcams and old device capturing. MP4 is a general standard container that supports faststart index pre-positioning and adapts to playback on all platforms, which creates the demand for AVI to MP4 conversion.
The conversion is based on FFmpeg, controls output quality with CRF constant quality mode, retains the original audio track encapsulated in AVI, keeps the resolution and frame rate consistent with the source file, and outputs an MP4 file smaller than most AVI files encoded with old codecs.
It is suitable for converting AVI files captured by dashcams and old DV into files that can be played online and adapted to mobile and desktop browsers, and the output files support playback on all mainstream operating systems and smart devices.
AVI vs MP4: technical comparison
| Feature | AVI | MP4 |
|---|---|---|
| Released | 1992 | 2001 |
| Developer | Microsoft | MPEG |
FAQ about AVI → MP4
Will quality decrease after conversion
Output quality is controlled by the CRF parameter; lower parameter values produce higher quality, and can be adjusted according to requirements. The conversion process will not forcibly reduce the effective quality of the original file.
Will the original AVI audio track be retained
Valid audio tracks contained in the original AVI will be retained, encapsulated into the MP4 container after conversion, output as an MP4 file with audio tracks, and audio tracks will not be deleted by default.
What is the maximum supported file size
The maximum size for a single file is 50MB, and only one file can be converted at a time. Files exceeding the size limit cannot be submitted for processing.
Will my files be stored
Files are uploaded to the server via HTTPS for conversion. After conversion is complete, the server immediately deletes both the source file and output file, and does not store any files.