AVI → MP4
AVI to MP4
AVI is an older container often found in archives and on old cameras. MP4 with H.264 video and AAC audio opens on iPhone, Android, TVs, social networks and video editors. The tool transcodes AVI to a compatible MP4 on the server.
The file will be deleted from the server automatically.
How to convert AVI to MP4
- 1Upload an AVI file
- 2Wait for the conversion to MP4
- 3Download the video and open it on any device
More about AVI to MP4
Why convert AVI to MP4
AVI was a popular video container on desktop computers for years. Today it is less supported by mobile devices, TVs and social networks. MP4 with H.264/AAC has become the standard for compatibility and plays almost everywhere.
How it works
The file enters an isolated queue and is processed by ffmpeg: video is encoded to H.264, audio to AAC, and the container gets the faststart flag for quick playback. Progress is shown on the page, and the result is deleted after download or within an hour.
Limitations
The maximum size is 100 MB, duration is five minutes and resolution is Full HD. The server runs one job at a time to stay stable. For long videos, prepare the file in advance or use a desktop converter.
Questions and answers
Why does AVI not open on a phone?
AVI may contain old codecs that mobile devices do not support. MP4 with H.264 and AAC is a universal option that plays almost everywhere.
Is quality lost?
Video is re-encoded at high quality (CRF 23), so the difference is usually invisible. Keep the original AVI for professional editing.
What are the limits?
Up to 100 MB, 5 minutes and Full HD. For larger files, trim the video or reduce its resolution before uploading.
Is audio preserved?
Yes, the audio track is encoded to AAC. If the AVI has multiple tracks or subtitles, the main track is kept.