Convert your AVI videos to MP4 format using our free online tool. MP4 is widely supported across devices and platforms, making it the ideal format for sharing and playback compared to the older AVI format. No Signup Required.
The AVI (Audio Video Interleave) format was developed by Microsoft in 1992 as part of their Video for Windows technology. Despite being over 30 years old, it remained popular for decades due to its simple structure that interleaves audio and video data. MP4, based on the MPEG-4 standard, wasn't finalized until 1998 but quickly gained prominence for its superior compression. Interestingly, while MP4 files are typically smaller, AVI sometimes preserves higher quality because it often uses less compression. Professional video editors sometimes prefer working with AVI during editing for this reason, only converting to MP4 for final distribution. The transition from AVI to MP4 mirrors the broader shift from desktop-centric computing to mobile and streaming platforms.
Converting AVI to MP4 involves complex transcoding processes that extract the original video and audio streams and re-encode them using different codecs. While AVI is merely a container format that can hold various codecs (often DivX or Xvid), MP4 typically uses H.264 or H.265 for video compression. The conversion process must handle potential codec incompatibilities, synchronization issues between audio and video streams, and metadata preservation. Modern converters employ multi-threading to parallelize encoding tasks across CPU cores, significantly accelerating conversion speed. Advanced implementations use adaptive bitrate algorithms that analyze frame complexity to allocate more bits to visually complex scenes while maintaining target file sizes, resulting in optimal quality-to-size ratios.
MP4 is one of the most widely supported video formats across devices and platforms, while AVI is older and less compatible. Converting AVI to MP4 ensures better compatibility, smaller file sizes, and high-quality playback on virtually any modern device.
Our converter aims to maintain high quality during conversion from AVI to MP4. While some quality reduction can occur during transcoding, we optimize the process to preserve the original video quality as much as possible.
Conversion time depends on the original file size. Most conversions complete within a few minutes.
Yes, we prioritize your privacy. Your files are securely stored on our servers and automatically deleted after 24 hours to ensure complete privacy and security.
Yes, our video to MP4 converter is completely free to use without any hidden charges. You just need to create an account to get started.
Your video data is temporarily stored on our secure servers and automatically deleted after 24 hours for your convenience and privacy.
The maximum video size limit for conversion is 10MB.