Ios MonoTouch:UIWeb不播放YouTube嵌入视频

在我们的应用程序中，我们在UINavigation控制器中托管一个UIWebView控件，并让它去获取网页。这些网页嵌入了YouTube视频

在iPad上，它工作正常；在iPhone上，视频打开，然后轻弹，然后消失，返回应用程序，应用程序可以继续正常运行，因此不会导致应用程序崩溃

这是我从控制台得到的iPhone的错误（不是非常有用）：

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如果你在plain Safari中导航到其中一个页面，会发生同样的事情吗？嗨，jonathan，不，它在Safari中工作得很好。嗯，我猜Safari通常在早上转储？jk，这个很奇怪。你是在浏览Youtube网页还是你们写的网页？我想知道一个标准的Youtube页面是否有效。它打开的链接是

 Nov  8 18:04:37 backboardd[26] <Warning>: Application 'UIKitApplication:com.apple.mobilesafari[0xf377]' exited abnormally with signal 9: Killed: 9
 Nov  8 18:04:37 ReportCrash[7703] <Notice>: 
          Not saving suspended-only Jetsam log because already dumped today.

[MPAVController] Autoplay: Enabling autoplay
[MPAVController] Autoplay: Skipping autoplay, disabled (for current item: 0, on player: 1)
setting movie path: http://o-o---preferred---sn-nx57yne7---v23---lscache8.c.youtube.com/videoplayback?upn=2-
[MPAVController] Autoplay: Enabling autoplay
[MPCloudAssetDownloadController] Prioritization requested for media item ID: 0
[MPAVController] Autoplay: Skipping autoplay, disabled (for current item: 0, on player: 1)
setting movie path: http://o-o---preferred---sn-nx57yne7---v23---lscache8.c.youtube.com/videoplayback?upn=2-Jx_RQQ4Hs&sparams=cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&fexp=90331
[MPAVController] Autoplay: _streamLikelyToKeepUp: 0 -> 1
[MPAVController] Autoplay: Skipping autoplay, disabled (for current item: 0, on player: 1)
[MPAVController] Autoplay: Enabling autoplay
[MPAVController] Autoplay: Enabling autoplay
[MPAVController] Autoplay: Disabling autoplay for pause
[MPAVController] Autoplay: Disabling autoplay