Sample Files
Details
MPEG-4 Part 14
About
MP4 (MPEG-4 Part 14) is a digital multimedia container format most commonly used to store video and audio. It is one of the most widely supported formats across devices, platforms, and streaming services.
History
MP4 (MPEG-4 Part 14) was introduced as part of the broader MPEG-4 standard developed to provide a flexible, efficient, and modern multimedia container format. Its goal was to replace older formats like AVI and MOV by offering better compression, improved streaming capabilities, and wider cross-device compatibility. It shares the same baseline as Quick Time File Format. MP4 file format can contains multiple tracks for audio, video, subtitle along with metadata.
Learn more at: https://mpeg.chiariglione.org
High compression efficiency
Broad compatibility on all devices
Ideal for streaming and web playback
Supports subtitles and metadata
Test upload functionality in backend systems
Validate video player compatibility
Measure encoding performance
Simulate streaming conditions
Use Cases
Here are the use cases for this file extension
Video Playback Testing
Validate how your app plays videos on different browsers and devices.
Upload & Storage Handling
Test backend systems for upload handling, size limits, and storage paths.
Encoding & Compression Tests
Run encoding comparisons or codec benchmarks.
Compatibility
This extension is compatible with the following platforms.
Windows
macOS
Linux
Android
iOS
Web Browsers
More Details
Here are some technical details about this extension
File Extension
.mp4
MIME Type
video/mp4
Container Format
MPEG-4 Part 14
Audio Support
AAC, MP3, AC3
Video Codecs
H.264, H.265, MPEG-4
Subtitle Support
Yes
Metadata Support
Yes
Typical Use
Streaming and media playback
Related
Here are some related extensions
Get answers to common questions
Most modern media players including VLC, Windows Media Player, QuickTime, and all major browsers.
Yes, MP4 can include multiple subtitle tracks within the container.
MP4 is a container. The codecs inside are typically lossy, but it can store both lossy and lossless media depending on the codecs used.