Thank smithfox translation,中文版

This is not a 100% frequency bug, I spent 3 days to debug it and I’m not sure I can duplicate it again.

case:

Connect to FMS Server using NetStream, once invoke method NetStream.play(‘streamName’), the flash player will crash.

all of flash player release have the same issue: single,debug,plugin

The bug will appear if satisfy the conditions below, ((but not all)

1. Win7 OS
2. Play RTMP stream. RTMP stream can be published by Flash Media Server(FMS) or Red5. In other words, playing local flv/f4v/mp4 video have not this problem
3. the Stream contains audio
4. Use Frame meta to pre-load. if you do not understand Frame pre-load, see this article: Preloaders in AS3;
5. After complete pre-load, call ‘removeChild’ to remove the pre-loaded instance of the class (BUG here).

Development and testing platform (appear BUG)

1. Flex SDK 4.5.1
2. Flash Media Server 4.0
3. Flash Player 10.3
4. Windows 7
5. Chrome12/Opera11.5/Firefox5/IE9

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• 2011-09-21:Adobe已经修正了此bug，并在安全更新的致谢名单中列出了本博客：http://www.adobe.com/support/security/bulletins/apsb11-26.html

• 2011-09-17:Adobe确定该bug已在最新版本中解决，并询问我是否要加入安全公告致谢部分：

Thank you again for sending us the Flash Player Netstream issue. This issue should be resolved in the upcoming release of Adobe Flash, currently planned for the next couple of weeks. Please let us know how you would like to be included in the Acknowledgements section of the upcoming Security Bulletin:

• 2011-08-15:Adobe再次回复，并声称解决了此BUG：

这个bug已经在内部修复了,该修复会被包含在flash player 11正式发布版当中。谢谢使用flash player!

• 2011-08-10:Adobe回复了此BUG：

Hello,
Thanks for your reporting of the issue flashplayer crash on netstream play. We could reproduce the issue and it has been filed in our internal bug system. We are going to >investigate it ASAP. And any update to the it, we will let you know quickly. Thanks!

• 2011-08-09:向Adobe提交了此BUG

这是个隐藏非常深的BUG，我都怀疑如果再做一次，我能不能把它找出来。它耗费了我宝贵的三天时间，三天啊……

BUG表现

在使用NetStream连接FMS发布的流，并执行NetStream.play(‘streamName’)方法时，FlashPlayer会崩溃。独立版、调试版以及基于浏览器的插件版均如此。

但是，这还不是全部。必须满足以下几点，该BUG才会出现。

• 使用Windows 7操作系统。也就是说，Windows XP不会出现这个问题；
• 播放的必须是RTMP流，RTMP流可以由Flash Media Server或者Red5来发布。也就是说，使用NetStream播放本地的flv/f4v/mp4视频不会出现这个问题；
• 播放的流包含音频。也就是说，如果该流只包含视频，不会出现这个问题；
• 播放的流中包含的音频声音较大。也就是说，即使该流包含音频，但如果发布方没有发出声音，或者发出的声音很小，该问题不会出现；当然，不需要很大的声音就能让播放端立即崩溃；
• 使用了Frame标签来做预加载。不了解Frame标签预加载的，看这篇文章：Preloaders in AS3;
• 在预加载完毕之后，使用removeChild移除了预加载类的实例（BUG就在这里）。

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