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What is MP4?
MP4 (MPEG-4 Part 14) is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. It is a standard specified as a part of MPEG-4.
History
MP4 was introduced in 2001 as a successor to the MPEG-4 Part 12 format. It was developed by the Moving Picture Experts Group (MPEG) and is based on the QuickTime File Format (QTFF) used by Apple's QuickTime framework.
How it works
MP4 files contain various types of data streams, including video, audio, and metadata. The format uses a hierarchical structure of boxes (also called atoms) to organize the data. Each box contains a specific type of information, such as video frames, audio samples, or metadata about the content.
How to open MP4 files
MP4 files can be opened with most modern media players and devices. Here are some common ways to open MP4 files:
- Windows Media Player
- VLC Media Player
- QuickTime Player (Mac)
- iTunes
- Windows 10 Movies & TV app
- Most web browsers (for streaming)
- Most smartphones and tablets
Tips for working with MP4 files
Here are some useful tips when working with MP4 files:
- MP4 files are widely supported across different platforms and devices
- They offer good compression while maintaining quality
- MP4 files can contain multiple audio tracks and subtitles
- The format supports streaming and progressive download
- MP4 files can be easily shared and uploaded to various platforms
Useful links
For more information about MP4 files, you can visit these resources:
- MPEG-4 Part 14 Specification
- ISO/IEC 14496-14:2003 Standard
- MP4 File Format Documentation
What is WMV?
WMV (Windows Media Video) is a video compression format developed by Microsoft. It is part of the Windows Media framework and is designed to work with Windows Media Player. WMV files are commonly used for streaming video content over the internet.
History
WMV was introduced by Microsoft in 1999 as part of the Windows Media framework. It was developed to provide efficient video compression for streaming and downloading video content on Windows platforms.
How it works
WMV files use Microsoft's proprietary video compression technology. The format is designed to provide good quality at low bitrates, making it suitable for streaming over the internet. WMV files can also include digital rights management (DRM) protection.
How to open WMV files
WMV files can be opened with various media players and devices. Here are some common ways to open WMV files:
- Windows Media Player
- VLC Media Player
- Media Player Classic
- PotPlayer
- Most modern web browsers
- Many media players on mobile devices
- Windows 10 Movies & TV app
Tips for working with WMV files
Here are some useful tips when working with WMV files:
- WMV files are optimized for streaming
- They offer good compression at low bitrates
- The format is widely supported on Windows platforms
- WMV files can be protected with DRM
- They can be easily converted to other formats
Useful links
For more information about WMV files, you can visit these resources:
- Microsoft Windows Media Documentation
- Windows Media Format SDK
- Windows Media Player Documentation
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