Convert AVI to MP4

Converting AVI to MP4 improves compatibility and often reduces file size. AVI is an older format that sometimes uses outdated codecs, which can cause problems on modern devices. MP4 works on most devices: smartphones, tablets, smart TVs, and web browsers. Good for updating old video collections, making home videos accessible, sharing content online, and saving storage space.

Converting AVI to MP4 can keep visual quality while making smaller files. The converter has different settings: "High Fidelity" keeps quality close to the original; "Balanced" gives good quality with smaller files; and "Efficiency" saves space with acceptable quality. For older AVI files with outdated codecs, converting to MP4 with H.264 or H.265 can sometimes improve quality by reducing compression artifacts. You choose the quality-to-size balance.

AVI is a container format that can use many different video and audio codecs. Our converter supports most AVI variants, including DivX, XviD, Indeo, Cinepak, Motion JPEG, and others. The system detects the codecs in your AVI and converts them. For rare or proprietary codecs, the converter can often extract content from unusual formats that other converters can't handle.

The converter keeps good audio quality during conversion. AVI files sometimes use older audio codecs like MP2, PCM, or proprietary formats. We convert these to AAC audio in the MP4, balancing quality and file size. If your AVI has multiple audio tracks (different languages, commentary, etc.), these are kept with language tags in the MP4. For AVIs with unusual audio, the converter can often fix or optimize problematic audio while keeping it in sync with the video.

For large AVI collections, batch processing makes conversion easier. You can queue hundreds of files, apply settings for each file, and process them automatically. The system gives detailed logs, handles errors for problematic files, and organizes files by content type or your preferences. For very large libraries, you can convert over time, track progress, and avoid duplicates. This works well for converting large AVI collections to MP4.