{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-06-02T23:23:49.606Z","discovery":{"catalog":"https://toptool.io/tools.json","llmsTxt":"https://toptool.io/llms.txt","sitemap":"https://toptool.io/sitemap.xml"},"relatedTools":[{"slug":"video-trimmer","name":"Video Trimmer","url":"https://toptool.io/video-trimmer"},{"slug":"video-compress","name":"Compress Video","url":"https://toptool.io/video-compress"},{"slug":"webm-to-mp4","name":"WebM to MP4","url":"https://toptool.io/webm-to-mp4"},{"slug":"mkv-to-mp4","name":"MKV to MP4","url":"https://toptool.io/mkv-to-mp4"},{"slug":"mov-to-mp4","name":"MOV to MP4","url":"https://toptool.io/mov-to-mp4"},{"slug":"mp4-to-webm","name":"MP4 to WebM","url":"https://toptool.io/mp4-to-webm"},{"slug":"avi-to-mp3","name":"AVI to MP3","url":"https://toptool.io/avi-to-mp3"},{"slug":"mp4-to-aac","name":"MP4 to AAC","url":"https://toptool.io/mp4-to-aac"}],"kind":"converter","slug":"avi-to-mp4","name":"AVI to MP4","description":"Convert AVI video to MP4 (H.264 + AAC) — free, runs entirely in your browser.","longDescription":"Re-encode an AVI file — often an older or camcorder-era format — into a modern MP4 with H.264 video and AAC audio. MP4 is supported by every phone, browser, and TV, and produces a much smaller file than the original AVI for the same visual quality. The conversion runs locally via ffmpeg.wasm, so your file never leaves your device. Performance depends on your CPU: expect roughly real-time encoding for short clips (a 5-minute 720p video may take 1–2 minutes). Sources taller than 1080p are automatically downscaled to 1080p so the browser does not run out of memory mid-encode; for best results keep inputs under about 500 MB.","category":"video","categoryName":"Video","keywords":["avi to mp4","convert avi to mp4","avi to mp4 converter","avi to mp4 online","avi to mp4 free","online avi to mp4","change avi to mp4","avi mp4 converter","free avi to mp4","online avi to mp4 converter","avi to h264","encode avi as mp4"],"url":"https://toptool.io/avi-to-mp4","runsOn":"client","multiple":false,"batch":false,"input":{"type":"file","extensions":[".avi"],"mimeTypes":["video/x-msvideo","video/avi"]},"output":{"type":"file","extension":".mp4","mimeType":"video/mp4"},"options":[{"type":"number","key":"crf","label":"Quality (CRF)","defaultValue":23,"min":18,"max":30,"step":1,"help":"Constant Rate Factor — lower = better quality and larger file. 23 is a sensible default; 18 is visually lossless; 28+ is heavy compression."}],"invocation":{"webUi":"https://toptool.io/avi-to-mp4","api":null,"notes":"Currently runs client-side in the user's browser. Drop a file on the UI at `webUi` and download the converted result. A remote MCP/REST API is planned."}}