MP4 Converter
Free MP4 converter that runs entirely in your browser. No upload, no signup — convert to MP4 or from MP4 into 200+ supported formats in one click.
Drop any file here or click to browse
All file types supported
About MP4
MP4
MP4 (MPEG-4 Part 14) is a digital multimedia container format standardized by the Moving Picture Experts Group (MPEG). It stores video, audio, subtitles, and still images in a single file and is the most widely used format for streaming and sharing video across the web, mobile devices, and living-room hardware. MP4 offers an excellent balance between compression efficiency and quality, typically using the H.264 or H.265 (HEVC) video codec together with AAC audio. Its near-universal support makes it the default choice for social media platforms, browsers, phones, and modern TVs.
- Developer
- ISO/IEC (MPEG)
- Initial release
- 2001
- Compression
- Lossy
- Color depth
- up to 12-bit HDR
- Transparency
- No
Best for
- Sharing videos on social media
- Streaming video over the web
- Playback on phones and tablets
- Storing H.264 or HEVC video
- Distributing downloadable video clips
Pros
- +Near-universal support across devices and browsers
- +Excellent compression-to-quality ratio
- +Supports subtitles, chapters, and metadata
- +Hardware-accelerated decoding on most devices
Cons
- −Patent-encumbered H.264/HEVC codecs
- −Not ideal for lossless archival
- −Editing streams can require re-muxing
How to convert with the MP4 converter
- 1
Choose the MP4 file you want to convert from your PC, Mac or mobile device, or simply drag and drop it onto the page.
- 2
When your file is uploaded, the output format is preset to MP4. You can add more files to batch-convert them together.
- 3
Click the gear icon and tweak codec, quality, resolution or other options if you need them, then apply to all files if you want.
- 4
Click the Convert button. When conversion completes, download the result to your computer or save it back to Google Drive / Dropbox.
Frequently Asked Questions
What is an MP4 file?▼
MP4 is the universal video format. Nearly every phone, browser, TV, and media player plays it, which is why most cameras and apps export MP4 by default.
Why convert MP4 to MP3?▼
To extract the audio track. This is the most common conversion when you want the sound from a video — a music track, a podcast, or a voice memo — as a standalone audio file.
Why convert to or from MKV?▼
MKV holds more streams and subtitle tracks, so it is preferred for hi-res rips; MP4 is preferred for sharing and playing everywhere. Converting between them can be nearly lossless for the video and audio.
Does converting MP4 reduce quality?▼
It depends on the settings. Re-encoding at a lower resolution or bitrate will reduce quality; choosing original settings keeps it virtually identical. Avoid unnecessary re-encodes.
Are my videos uploaded when converting?▼
Never. ChameLeo converts video locally in your browser with WebAssembly (FFmpeg) — files never leave your device.
Supported Conversions
Specific converters
100% Free
No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.
No Signup Required
Start converting immediately without creating an account or sharing email address.
Private & Secure
Your files never leave your device. All processing is completed locally for maximum privacy.
Batch Conversion
Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.
Runs in Browser
Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.
200+ Formats
Supports a wide variety of formats including images, documents, audio, video, and more.
MP4 Converter Quality Rating
How was your experience? You need to convert and download at least one file to provide feedback!