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Convert AVI to MP4
Online & free tool to convert AVI files to MP4

1) Input file

Choose source file(s) to convert:

0 of 5 files added (up to 1000 MB combined)

2) Output format

Select a target format to convert to:

3) Convert

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Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.

1) File URL

Choose file URL to convert:

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.

1) Cloud Service

Choose a cloud service provider:

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.
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AVI

Audio Video Interleave File

The AVI file format is one of the most widely used multimedia containers ever devised. AVI, which stands for audio video interleaved, was first introduced to the public by Microsoft in 1992 as part of their 'video for windows' multimedia framework. Being a container format, an AVI file with the .avi filename extension can exist with both video and audio content synchronized for playback. The format can thus be used by authors to edit and encode audio video sequences or just video sequences. The Digital video AVI format exists in two forms, Type 1 and Type 2.
MP4

MPEG-4 Video File

The MP4 file format and the .mp4 filename extension refer to the MPEG-4 part 14 digital multimedia format developed by the Moving Picture Experts Group. It is used as a multimedia container to wrap encoded digital video and audio streams, including subtitles and still images if required. In recent decades, the format has been popularized as one of the main standards for streaming media over the internet and other computer networks and for the digital distribution of large multimedia files. MP4 supports a large number of compression audio codecs allowing files in this format to maintain a relatively small size without discounting playback quality.

Trusted conversion quality

FreeFileConvert uses tuned encoding for AVI to MP4 conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.

Seamless workflow

Upload AVI files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized MP4 results on any device you rely on.

Batch support for teams

Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent MP4 audio with dependable progress tracking.

About AVI

How to open AVI files

Windows Media Player
Media Player Classic
VLC Player
MX Player

Technical details

The AVI format was derived from the RIFF or resource interchange file format which is a generic container format. Digital video that is interleaved can be stored natively as a single stream conforming to the type-1 specification of the AVI file format. This ha…

The AVI format was derived from the RIFF or resource interchange file format which is a generic container format. Digital video that is interleaved can be stored natively as a single stream conforming to the type-1 specification of the AVI file format. This has the disadvantage however of not being compatible with the video for windows framework. In general, the number of blocks in .avi files determine the amount of overhead. Overhead associated with the audio stream is determined by which codec is used to encode the stream for example AC3 or MP3-VBR.

About MP4

How to open MP4 files

Media Player Classic
VLC Player
WinAmp
QuickTime
iTunes
Read more...

Technical details

The MPEG-4 Part 14 is standardized as part of the MPEG-4 format in ISO/IEC 14496-14:2003. It is recognized as a container format for audio and video streams and references several filename extensions of which .mp4 is one. The MPEG-4 Part 14 is in many ways ide…

The MPEG-4 Part 14 is standardized as part of the MPEG-4 format in ISO/IEC 14496-14:2003. It is recognized as a container format for audio and video streams and references several filename extensions of which .mp4 is one. The MPEG-4 Part 14 is in many ways identical to Apple's QuickTime format which formed the basis of MPEG-4. However, there are slight differences in compatibility with other previously standardized MPEG features and the added support for IOD or initial object descriptors which describe elementary data streams and set profile information of the resources needed for content playback.

How to convert AVI to MP4

STEP 1

Upload your video file in the AVI format from your device, Dropbox, or Google Drive.

STEP 2

Select MP4 as the output format and click Convert. Adjust optional settings if needed.

STEP 3

Download the converted video file. Each file stays available for up to 5 downloads.

More AVI and MP4 options

Convert other files to MP4

Explore popular source formats that convert beautifully into MP4.

Convert AVI to other formats

Need a different output? These conversions transform AVI into other widely used formats.

Your data, our priority

  • 256-bit SSL encrypted uploads and downloads
  • Automatic file deletion shortly after conversion completes
  • Reliable global infrastructure for consistent performance

Overall Rating: (833 Votes)