项目需要，所以搭建了一个red5服务器在linux服务器上。因为red5支持的视频格式主要是flv和mp4，所以我将视频使用格式工厂转换成了MP4格式，这些视频在其他播放器上都可以正常播放。但是上传到red5服务器上的视频，通过red5的rtmp流播放的时候视频黑屏，但是可以听到声音。或者有的视频先黑屏一段时间，然后才有图象。希望有人帮我分析一下，谢谢！！！
Project needs, so build a red5 server on linux server. Because red5 supported video formats are mainly flv and mp4, so I'll use the video format factory converted into MP4 format, which can be normal video playback on other players. But on the red5 video uploaded to the server, when played through red5 rtmp streaming video of a black screen, but you can hear the sound. Or some video first black screen for some time, and then have the images. I hope someone will help me analyze, thank you! ! !
