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flv文件修复工具有些flv视频文件的Meta Data是损坏的，不能显示进度条，或者视频长度信息异常，播放起来很是不方便。今天介绍一个修复工具——flvmdi，全称“FLV MetaData Injector”，非常好用。 下载地址1： http://buraks.com/flvmdi 下载地址2：点击下载此文件
Action Message Format ( AMF ) is a binary format used to serialize object graphs such as ActionScript objects and XML, or send messages between an Adobe Flash client and a remote service, usually a Flash Media Server or third party alternatives. The Actionscript 3 language provides classes for encoding and decoding from the AMF format. The format is often used in conjunction with Adobe's RTMP to establish connections and control commands for the delivery of streaming media. In this case, the AMF data is encapsulated in a chunk which has a header which defines things as the message length and type (whether it is a "ping", "command" or media data).
FLVmeta aims to be a replacement for tools such as flvtool2. It has the ability to inject all standard metadata tags into the onMetaData event, as well as insert an onLastSecond event. Since version 1.0.7, it is also able to fix very large FLV files with invalid 24-bit timestamps to make proper use of 32-bit extended timestamps. FLVmeta is written in portable C, and can therefore be compiled on a variety of platforms, including Linux, Windows, and MacOSX. It is also pretty fast and has a very small memory footprint, making it ideal for use as an automated tool on server environments. FLVmeta 1.1.0 has been officially released.
flv 元信息(metadata) flv文件中的元信息，是一些描述flv文件各类属性的信息。这些信息以AMF格式保存在文件的起始部分。
本来是应该先写一个媒体文件格式的简单讲解的，还没来得及写，以后再写。今天就先根据ffmpeg的flv.c的flv_demux这个结构体来讲解一下当前比较流行的媒体格式flv. FLV 是FLASH VIDEO的简称，FLV流媒体格式是随着Flash MX的推出发展而来的视频格式。