Convert AVI Video Clips to MP4 Offline.
Need to play or edit a legacy AVI clip? AVI to MP4 Converter transcodes your video files directly to universal H.264 or space-saving HEVC MP4. Everything runs offline on your device, with no internet required and zero server uploads. Choose your file, select your export options, and save a clean copy.
100% offline · on-device transcoding · hardware-accelerated · no file size limits
AVI is a legacy video container format that many modern web browsers, mobile phones, smart TVs, and editing suites no longer support. AVI to MP4 Converter solves this incompatibility by letting you transcode your video clips into highly compatible MP4 files directly on your Apple hardware.
It is a straightforward, single-purpose converter designed for maximum speed and simplicity. Load any AVI clip to inspect its specifications—including duration, resolution, frame rate, and audio stream. You can customize the container codec (universal H.264 or high-efficiency HEVC), select quality levels (High, Balanced, Small), and adjust output resolution (Original, 1080p, 720p, 480p) to balance file size with visual fidelity. Once configured, the app runs a native transcoder directly on your device.
Because the app operates 100% offline, your videos never leave your hardware. There are no registration forms, no subscription queues, and no server uploads. Evaluating the app with our built-in sample clip is completely free. Unlimited file conversions, fine-grained codec options, and watermark-free exports are unlocked with a simple subscription plan.
H.264 or HEVC Codecs.
Configure the export to suit your needs: select universal H.264 for maximum compatibility or HEVC for smaller file sizes, and adjust quality or resolution.
Universal H.264 MP4
Plays on any browser, mobile phone, smart TV, or video editor.
High-Efficiency HEVC
Produces significantly smaller files while preserving high visual quality.
Resolution & Quality Controls
Choose quality presets (High, Balanced, Small) and limit resolution down to 1080p, 720p, or 480p.
Instant Specifications
Inspect your source AVI's duration, frame rate, resolution, and audio details before you convert.
Three steps to a modern MP4.
Load your AVI video
Choose an AVI file from your local storage, downloads, or external drives. The app immediately reads the file properties locally.
Select output settings
Choose your preferred output codec (H.264 or HEVC), set the output quality level, and select the target resolution.
Transcode on your device
Tap convert to start transcoding. The app uses hardware acceleration to run the conversion offline in real-time.
Save and share
Save the resulting MP4 directly to your device or share it to other apps with no watermarks or restrictions.
Transcode legacy video clips.
The primary input format. Open any standard AVI video file directly from the Files app or your local storage.
Core App Features.
Native On-Device Transcoding
Uses hardware acceleration directly on your Apple hardware for fast, local conversions without any remote servers.
H.264 & HEVC Codecs
Choose universal H.264 for maximum device compatibility, or HEVC (H.265) for compact files.
Resolution Tuning
Keep the source resolution or downscale to 1080p, 720p, or 480p to fit storage or bandwidth limits.
Quality Presets
Select High, Balanced, or Small presets to optimize the trade-off between detail and file size.
Offline & Private
Your video files stay entirely on your device. Zero bytes uploaded, ensuring absolute privacy.
Full File Inspection
View detailed clip specifications, including frame rate, resolution, duration, and audio formats.
Built-in Evaluation Clip
Try out all configuration options using the included sample video clip before upgrading.
Custom Themes & Notes
Toggle between dark and light themes, and write notes that auto-save locally to your device.
No internet required. Your media files are processed locally on your device and are never uploaded.
Utilizes the device's native hardware-accelerated video decoding and encoding engines.
Save your converted MP4s clean and at full quality, without visual tags or limits (unlocked via plan).
- Converting old AVI home videos to play on iPhones, iPads, and modern web browsers.
- Preparing legacy clips for import into editors that no longer support AVI.
- Compressing large AVI videos into compact HEVC MP4 files to save local storage.
- Transcoding videos securely when handling private or sensitive footage offline.
Opening AVI files, viewing properties, and trying all options with the sample clip is free. Unlimited conversions and custom controls require a weekly or annual plan.
AVI to MP4 Conversion FAQ.
Does the app upload my videos?
No. All conversions happen entirely on your device. Your video files are never uploaded to any cloud server.
What codecs are supported for output?
You can choose H.264 (AVC) for broad compatibility or HEVC (H.265) for smaller files.
Can I adjust the export quality?
Yes. You can select High, Balanced, or Small quality presets, and adjust the resolution (Original, 1080p, 720p, 480p).
Is bulk conversion supported?
No. The app is designed for converting individual video clips one at a time.
What does the free version include?
You can load any AVI file to inspect its details, and convert and test all options with the built-in sample clip. Converting your own files requires a subscription.
Do I need a network connection?
No. The app runs fully offline without any internet connection.
Bring your AVI videos to any screen.
Open your AVI file, inspect its details, and convert it to H.264 or HEVC MP4—all locally on your device. Try it today.
AVI to MP4 Converter is an independent app and is not affiliated with, endorsed by, or sponsored by any third-party video standards organizations or software vendors. AVI, MP4, H.264, and HEVC are referenced only to indicate the file formats and codecs the app works with.