小弟最近做h264的打包发送，在windows下用vlc接收，只能解码播放第一帧图像（I帧），然后就卡那儿了，提示出错信息为：
avcodec error: more than 5 seconds of late video -> dropping frame (computer too slow ?)
查看解码器信息，发现“已解码帧”和“已显示帧”数目也在不停的更新，但画面就是不动了，而且“已显示帧”要远大于“已解码帧”。让我很费解。
我又换到linux下接收，更是连第一帧都播不出来了，显示的信息为（我是在本地读sdp文件进行接收端的设置的，前面部分为读sdp的信息）：
/////////////////////////////////////////////////////////////////////////////////////////
main debug: adding playlist item `/root/Desktop/h264test.sdp' ( /root/Desktop/h264test.sdp )
main debug: creating new input thread
main debug: waiting for thread completion
main debug: thread 2985520016 (input) created at priority 0 (input/input.c:265)
main debug: `/root/Desktop/h264test.sdp' gives access `' demux `' path `/root/Desktop/h264test.sdp'
main debug: creating demux: access='' demux='' path='/root/Desktop/h264test.sdp'
main debug: looking for access_demux module: 2 candidates
main debug: creating access '' path='/root/Desktop/h264test.sdp'
main debug: looking for access2 module: 8 candidates
[color=#FF0000]vcd debug: trying .cue file: /root/Desktop/h264test.cue
vcd debug: could not find .cue file
access_file debug: opening file `/root/Desktop/h264test.sdp'
main debug: using access2 module "access_file"
main debug: pre-buffering...
main debug: received first data for our buffer
main debug: creating demux: access='' demux='' path='/root/Desktop/h264test.sdp'
main debug: looking for demux2 module: 45 candidates
live555 debug: RTP subsession 'video/H264'
main debug: selecting program id=0
main debug: using demux2 module "live555"
main debug: looking for a subtitle file in /root/Desktop/
main debug: looking for decoder module: 26 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg debug: postprocessing disabled
ffmpeg debug: ffmpeg codec (h264) started
main debug: using decoder module "ffmpeg"
main debug: looking for packetizer module: 17 candidates
main debug: using packetizer module "packetizer_h264"
main debug: thread 2962201488 (decoder) created at priority 0 (input/decoder.c:159)
main debug: `/root/Desktop/h264test.sdp' successfully opened packetizer_h264
///////////////////////////////////////////////////////////////////////////////////////////////////
[#FF0000]warning: waiting for SPS/PPS
packetizer_h264 debug: found NAL_PPS
packetizer_h264 debug: found NAL_SPS
我打包是直接对一个h264文件提取出每个nal，然后加上RTP包头（依赖Jrtplib），PT设为98（与sdp中一致），时戳单元为1/90000，其它的都按jrtplib默认设置，每封装一个包就发送一个包。
哪位大侠给看看问题出在哪儿，看调试信息似乎是数据包的封装有问题导致vlc不认识，但为何又能发现pps和sps呢，windows下也能解码第一帧，难道他们的包设置不同。拜托各位了。
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而且“已显示帧”要远大于“已解码帧”是自己程序的问题吧
你用wireshark截包工具分析下接收的包对不对，wireshark有trp协议的分析
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