Issues
The differences between various container formats arise from five main issues:
- Popularity; how widely supported a container is.
- Overhead. This is the difference in file-size between two files with the same content in a different container.
- Support for advanced codec functionality. Older formats such as AVI do not support new codec features like B-frames, VBR audio or VFR video natively. The format may be "hacked" to add support, but this creates compatibility problems.
- Support for advanced content, such as chapters, subtitles, meta-tags, user-data.
- Support of streaming media
Read more about this topic: Digital Container Format
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