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Ref:http://blog.csdn.net/jasonhwang/article/details/7359095 抓取一个包含H.264 Payload RTP包的SIP会话或RTSP会话后,用Wireshark的Play功能只能播放声音,不能播放视频。把RTP payload直接导出成文件后也是不能直接播放的,因为H.264 over RTP封包是符合RFC3984规范的,必须按照该规范把H.264数据取出来后,组成NALU,放到avi/mp4或裸码流文件等容器里后才能播放。 这个wireshark插件,可以在打开包含H.264码流的抓包后,选菜单“Tools->Export H264 to file [HQX's plugins]”后,把抓包文件里的H.264码流自动导出到抓包文件所在目录(工作目录)里,名为from_<RTP流源ip>_<RTP流源端口>_to_<RTP流目的ip>_<RTP流目的端口>.264的264裸码流文件里。(文件格式为每个NALU前加0x00000001分隔符)。 本程序可以识别RFC3984里提到的三种H.264 over RTP封装,分别是Single NALU(一个RTP含一个NALU)、STAP-A(一个RTP包含多个NALU)、FU-A(一个NALU分布到多个RTP包)三种封装格式,且会自动把SPS和PPS放到裸码流文件头部。
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