AVI（音视频交错格式）
AVI 是 Microsoft 开发的旧版多媒体容器，交错存储音频和视频流。虽然支持多种编解码器，但 AVI 缺乏原生流媒体、可变帧率和字幕轨道等现代功能，对于新内容基本已过时。
MIME 类型
video/x-msvideo
类型
二进制
压缩
有损
优点
- + Simple structure that is easy to parse
- + Wide legacy software support
- + Compatible with many older codecs
缺点
- − No native streaming or fast seeking support
- − Cannot embed subtitles or chapters
- − Larger files than equivalent MP4 due to format overhead
何时使用 .AVI
新项目请勿使用 AVI；请使用 MP4 或 MKV。将现有 AVI 文件转换为现代格式以获得更好的兼容性和更小的文件。
技术细节
AVI 使用 RIFF 容器，交错存储音频和视频块。它支持多种编解码器（DivX、Xvid、MJPEG），但缺乏对 B 帧、可变比特率音频和现代功能的标准化支持。
历史
Microsoft 于 1992 年作为 Video for Windows 框架的一部分引入了 AVI。它在 1990 年代至 2000 年代初是 PC 上的主导视频格式，之后被 MP4 和 MKV 取代。
从 .AVI 转换
转换为 .AVI
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