AVI to MP4 Converter

Convert AVI to MP4 online. AVI and MP4 are containers, while the video and audio codecs live inside them. Free batch processing with no signup or watermark.

Upload your videos

How to convert AVI to MP4

  1. 1

    Add one or more AVI files. You can review the complete batch before processing it.

  2. 2

    MP4 is already selected for this page. Add multiple videos and adjust the available video and audio codec settings before processing.

  3. 3

    Start the batch, then download and check the finished MP4 file or files.

What changes when you convert AVI to MP4?

AVI and MP4 are containers, while the video and audio codecs live inside them. Compatible streams may be copied; otherwise they are re-encoded for the selected MP4 settings.

  • For the widest playback support, check that the selected video and audio codecs are accepted by the device or service that will receive the MP4 file.
  • Add multiple videos and adjust the available video and audio codec settings before processing.
  • Open the finished MP4 file and check fine details, layout and compatibility in the app where you plan to use it.
Source format

What is a AVI file?

AVI is a classic Microsoft video format from the 1990s. It offers broad compatibility and good quality but large, inefficient files, so it is mostly replaced by MP4 today - though it is still common in older archives.

How to open a AVI file

AVI opens in Windows Media Player, VLC and most desktop players; for phones and browsers, converting to MP4 is the reliable choice.

Output format

What is a MP4 file?

MP4 is a widely supported container for video and audio. Compatibility and file size depend on the codecs and settings used inside it, which is why MP4 with H.264 video and AAC audio is a common choice for sharing and uploading.

How to open a MP4 file

MP4 is widely supported by browsers, phones, smart TVs and desktop players. Playback still depends on the video and audio codecs stored inside the file.

Frequently asked questions

Is it free to convert AVI to MP4?
Yes. There is no sign-up, subscription or watermark on the converted file.
What happens to quality when AVI becomes MP4?
AVI and MP4 are containers, while the video and audio codecs live inside them. Compatible streams may be copied; otherwise they are re-encoded for the selected MP4 settings.
Which conversion options are available on this page?
Add multiple videos and adjust the available video and audio codec settings before processing.
How can I open the converted MP4 file?
MP4 is widely supported by browsers, phones, smart TVs and desktop players. Playback still depends on the video and audio codecs stored inside the file.

Convert AVI to other formats

ToolSpice can convert your AVI files to these other formats:

AVI Converter
AVI to MOV
AVI to MKV
AVI to FLV
AVI to WMV

Convert other formats to MP4

These other formats can be converted to MP4 on ToolSpice:

MP4 Converter
FLV to MP4
TS to MP4
3GP to MP4