# Convert MP4 to AVI > Convert MP4 to AVI online for free. Runs entirely in your browser, so your files never leave your device. Fast batch conversion, no sign-up, no watermarks. URL: https://www.converterrr.com/mp4-to-avi - Runs in the browser with FFmpeg (WASM): files are not uploaded, and no credits are used. - Engines: FFmpeg (WASM) (browser), FFmpeg (cloud). - API: available. `POST /api/v1/jobs` with `"output_format": "avi"` (paid plans). - More: [Video converter](https://www.converterrr.com/video-converter), [MP4 converter](https://www.converterrr.com/mp4-converter), [Compress MP4](https://www.converterrr.com/compress-mp4). ## How to convert MP4 to AVI 1. **Add your MP4 files.** Drag and drop MP4 files onto the converter, paste them, or click to browse. You can add several at once. 2. **Choose AVI.** AVI is already selected. Open Options if you want to change quality, size or metadata. 3. **Convert.** Click Convert. Your files are converted right in your browser in seconds. 4. **Download your AVI.** Download each AVI file, or everything at once as a ZIP. ## Good to know - MP4 files are typically used for sharing, streaming and uploading video anywhere, while AVI is best for older camcorder footage and legacy video archives. - This conversion runs on FFmpeg (WASM), running locally in your browser — nothing is uploaded and it works even on slow connections. ## MP4 vs AVI | | MP4 | AVI | | --- | --- | --- | | Full name | MPEG-4 Part 14 | Audio Video Interleave | | Type | Video | Video | | Extensions | .mp4 | .avi | | MIME type | video/mp4 | video/x-msvideo | | Best for | sharing, streaming and uploading video anywhere | older camcorder footage and legacy video archives | | Properties | lossy compression, open standard | legacy format | **MP4:** MP4 is the most widely supported video container. It usually holds H.264 or H.265 video with AAC audio and plays on every device and platform. **AVI:** AVI is Microsoft's classic video container from 1992. It's still found on older cameras and archives but lacks modern features. The other way around: [convert AVI to MP4](https://www.converterrr.com/avi-to-mp4). ## Related conversions - [AVI to MP4](https://www.converterrr.com/avi-to-mp4) (in the browser) - [MP4 to MP3](https://www.converterrr.com/mp4-to-mp3) (in the browser) - [MP4 to WebP](https://www.converterrr.com/mp4-to-webp) (in the browser) - [MOV to AVI](https://www.converterrr.com/mov-to-avi) (in the browser) - [MP4 to MOV](https://www.converterrr.com/mp4-to-mov) (in the browser) - [GIF to AVI](https://www.converterrr.com/gif-to-avi) (in the browser) - [MP4 to GIF](https://www.converterrr.com/mp4-to-gif) (in the browser) - [WebM to AVI](https://www.converterrr.com/webm-to-avi) (in the browser) - [MP4 to WAV](https://www.converterrr.com/mp4-to-wav) (in the browser) - [MKV to AVI](https://www.converterrr.com/mkv-to-avi) (in the browser) - [MP4 to WebM](https://www.converterrr.com/mp4-to-webm) (in the browser) - [WMV to AVI](https://www.converterrr.com/wmv-to-avi) (in the browser) ## Convert MP4 to other formats [MP4 to MP3](https://www.converterrr.com/mp4-to-mp3), [MP4 to WebP](https://www.converterrr.com/mp4-to-webp), [MP4 to MOV](https://www.converterrr.com/mp4-to-mov), [MP4 to GIF](https://www.converterrr.com/mp4-to-gif), [MP4 to WAV](https://www.converterrr.com/mp4-to-wav), [MP4 to WebM](https://www.converterrr.com/mp4-to-webm), [MP4 to MKV](https://www.converterrr.com/mp4-to-mkv), [MP4 to M4A](https://www.converterrr.com/mp4-to-m4a), [MP4 to FLAC](https://www.converterrr.com/mp4-to-flac), [MP4 to AAC](https://www.converterrr.com/mp4-to-aac), [MP4 to OGG](https://www.converterrr.com/mp4-to-ogg), [MP4 to WMV](https://www.converterrr.com/mp4-to-wmv), [MP4 to Opus](https://www.converterrr.com/mp4-to-opus), [MP4 to M4V](https://www.converterrr.com/mp4-to-m4v), [MP4 to FLV](https://www.converterrr.com/mp4-to-flv), [MP4 to MPEG](https://www.converterrr.com/mp4-to-mpeg), [MP4 to 3GP](https://www.converterrr.com/mp4-to-3gp), [MP4 to WMA](https://www.converterrr.com/mp4-to-wma), [MP4 to TS](https://www.converterrr.com/mp4-to-ts), [MP4 to MPG](https://www.converterrr.com/mp4-to-mpg), [MP4 to AIFF](https://www.converterrr.com/mp4-to-aiff), [MP4 to AMR](https://www.converterrr.com/mp4-to-amr), [MP4 to VOB](https://www.converterrr.com/mp4-to-vob), [MP4 to M4B](https://www.converterrr.com/mp4-to-m4b) ## Convert other formats to AVI [MOV to AVI](https://www.converterrr.com/mov-to-avi), [GIF to AVI](https://www.converterrr.com/gif-to-avi), [WebM to AVI](https://www.converterrr.com/webm-to-avi), [MKV to AVI](https://www.converterrr.com/mkv-to-avi), [WMV to AVI](https://www.converterrr.com/wmv-to-avi), [FLV to AVI](https://www.converterrr.com/flv-to-avi), [M4V to AVI](https://www.converterrr.com/m4v-to-avi), [MPEG to AVI](https://www.converterrr.com/mpeg-to-avi), [3GP to AVI](https://www.converterrr.com/3gp-to-avi), [MPG to AVI](https://www.converterrr.com/mpg-to-avi), [TS to AVI](https://www.converterrr.com/ts-to-avi), [MTS to AVI](https://www.converterrr.com/mts-to-avi), [VOB to AVI](https://www.converterrr.com/vob-to-avi), [M2TS to AVI](https://www.converterrr.com/m2ts-to-avi), [APNG to AVI](https://www.converterrr.com/apng-to-avi), [OGV to AVI](https://www.converterrr.com/ogv-to-avi), [MXF to AVI](https://www.converterrr.com/mxf-to-avi), [DivX to AVI](https://www.converterrr.com/divx-to-avi), [3G2 to AVI](https://www.converterrr.com/3g2-to-avi), [RM to AVI](https://www.converterrr.com/rm-to-avi), [RMVB to AVI](https://www.converterrr.com/rmvb-to-avi), [F4V to AVI](https://www.converterrr.com/f4v-to-avi), [ASF to AVI](https://www.converterrr.com/asf-to-avi) ## MP4 to AVI: frequently asked questions ### How do I convert MP4 to AVI? Drop your MP4 file onto the converter above, make sure AVI is selected, and click Convert. When it's done, download the AVI file — it usually takes a few seconds. ### Is it safe to convert MP4 to AVI here? Yes. MP4 to AVI conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server. ### Is the MP4 to AVI converter free? Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250. ### Will converting MP4 to AVI reduce quality? No — AVI preserves the content of your MP4 file as faithfully as the format allows. ### Can I convert multiple MP4 files at once? Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP. ### Can I convert AVI back to MP4? Yes — use our AVI to MP4 converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.