Free Online MP4 Converter – Convert Any Video to Universal MP4 Format
Having trouble playing video files on specific smartphones, smart TVs, video editors, or web platforms? MP4 (MPEG-4 Part 14) with H.264 video and AAC audio is the world's most universally compatible video standard. Our MP4 Converter allows you to convert MOV, MKV, AVI, WebM, FLV, WMV, and 3GP videos into standard MP4 directly inside your web browser with 100% data privacy.
High Performance MP4 Transcoding Engine
Designed for content creators, video editors, digital marketers, and educators:
- Universal Device Playback: Plays flawlessly across iPhone, Android, Windows, Mac, Linux, web browsers, and gaming consoles.
- Custom Scaling & Resolution: Upscale or downscale to 1080p Full HD, 720p HD, 480p, or maintain original aspect ratio.
- 100% In-Browser Privacy: Video encoding runs on your local CPU/GPU hardware. Your private videos are never uploaded to remote servers.
- Zero Watermarks & Unlimited: Completely free forever with unlimited conversions and zero branding watermarks.
How to Convert Video to MP4 in 4 Steps
- Upload Video File: Drag and drop your MOV, MKV, AVI, or WebM video into the dropzone.
- Configure Output: Select resolution (1080p, 720p, 480p) and quality preset.
- Click "Convert to MP4 Now": Fast hardware-accelerated transcoding encodes standard H.264 MP4 locally.
- Preview & Download: Audition video playback and download your universal MP4 video. For general video format changes or GIF animations, try our Universal Video Converter or Video to GIF Converter.
Common Practical Applications
- Audio Extraction & Processing: Isolate audio tracks from MP4 with Extract Audio from Video or convert video soundtracks with Video to MP3 Converter.
- Audio Trimming & Joining: Cut audio tracks with Audio Cutter & Ringtone Maker or merge audio clips with Audio Merger & Joiner.
- Audio Optimization & Enhancement: Convert audio formats with Audio Converter or boost quiet audio with Volume Booster & Audio Amplifier.
- Visual & Document Conversion: Convert image graphics with Universal Image Converter or convert PDF documents with PDF to Word Converter.
OnlineConverter MP4 Converter vs. Standard Online Video Tools
| Feature | OnlineConverter MP4 Converter | Standard Online Video Tools |
|---|---|---|
| Output Compatibility | Universal H.264 / AAC MP4 (100% compatible) | Non-standard codecs requiring extra software |
| Large Video Processing | Fast local GPU/CPU encoding (zero upload lag) | Slow cloud upload queues and size limits |
| Resolution Controls | Original, 1080p, 720p, 480p, 360p customizable | Locked to 480p on free tiers |
| Data Privacy | 100% In-Browser Sandbox (Zero uploads) | Uploads private video footage to cloud servers |
| Cost & Limits | 100% Free Forever (No limits or watermarks) | Daily limits, watermarks, and monthly subscriptions |
Frequently Asked Questions (FAQs)
Q: Why should I convert my video files to MP4?
A: MP4 is the most universally supported video format in the world. It plays natively across every smartphone, web browser, operating system, and social media platform without codec installation errors.
Q: Are my confidential video files uploaded to remote servers?
A: No! All MP4 transcoding operates 100% locally in your web browser memory. Your videos remain strictly confidential and never leave your computer or phone.
Q: Which video formats can I convert to MP4?
A: You can convert MOV (iPhone/Mac), MKV, AVI, WebM, FLV, WMV, 3GP, and M4V video files into standard MP4 format.
Q: Does OnlineConverter add watermarks to converted MP4 videos?
A: No! All conversions on OnlineConverter are 100% free of watermarks, logo stamps, or quality restrictions.
Q: Can I convert high-definition 1080p videos to MP4?
A: Yes! You can select 1080p Full HD resolution or choose "Original Resolution" to retain crisp visual clarity.