VideoDisplay stream not showed

Question

Hi,
I'm working with Flex 4.5.
I created a new project, put a VideoDisplay component, source video stream, nothing else.
<s:VideoDisplay source="rtmp://flashserver/videoondemand/MP4:/path/to/video" />
I have only audio, no video. After a while that it is playing, it suddenly appears, let's say after 30secs.
If I pause, play, seek than it is immediately showed. If I go back to seek(0), the video is stuck, audio ok.
Tested with another stream server, same thing.
If I use FLV files (smaller files) instead MP4, then it works correctly!
Exception:
TypeError: Error #1009: Cannot access a property or method of a null object reference. 
at video_test/init()[C:\flashbuilder-workspace\video_test\src\video_test.mxml:18]
at video_test/___video_test_Application1_creationComplete()[C:\flashbuilder-workspace\video_ test\src\video_test.mxml:4]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\hero_private\frameworks\projects\framework\sr c\mx\core\UIComponent.as:13128]
at mx.core::UIComponent/set initialized()[E:\dev\hero_private\frameworks\projects\framework\src\mx\core\UIComponent.a s:1818]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\hero_private\frameworks\project s\framework\src\mx\managers\LayoutManager.as:842]
at mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\hero_private\frameworks \projects\framework\src\mx\managers\LayoutManager.as:1180]
I tried to download OSMF v.16, the latest, nothing works, this exception in the console
VerifyError: Error #1014: Class org.osmf.media::MediaFactory could not be found.
at video_test/_video_test_Array1_c()
at mx.core::DeferredInstanceFromFunction/getInstance()[E:\dev\hero_private\frameworks\projec ts\framework\src\mx\core\DeferredInstanceFromFunction.as:108]
at spark.components::SkinnableContainer/createDeferredContent()[E:\dev\hero_private\framewor ks\projects\spark\src\spark\components\SkinnableContainer.as:1049]
at spark.components::SkinnableContainer/createContentIfNeeded()[E:\dev\hero_private\framewor ks\projects\spark\src\spark\components\SkinnableContainer.as:1078]
at spark.components::SkinnableContainer/createChildren()[E:\dev\hero_private\frameworks\proj ects\spark\src\spark\components\SkinnableContainer.as:885]
at spark.components::Application/createChildren()[E:\dev\hero_private\frameworks\projects\sp ark\src\spark\components\Application.as:1274]
at mx.core::UIComponent/initialize()[E:\dev\hero_private\frameworks\projects\framework\src\m x\core\UIComponent.as:7624]
at spark.components::Application/initialize()[E:\dev\hero_private\frameworks\projects\spark\ src\spark\components\Application.as:1259]
at video_test/initialize()
at mx.managers.systemClasses::ChildManager/childAdded()[E:\dev\hero_private\frameworks\proje cts\framework\src\mx\managers\systemClasses\ChildManager.as:189]
at mx.managers.systemClasses::ChildManager/initializeTopLevelWindow()[E:\dev\hero_private\fr ameworks\projects\framework\src\mx\managers\systemClasses\ChildManager.as:359]
at mx.managers::SystemManager/initializeTopLevelWindow()[E:\dev\hero_private\frameworks\proj ects\framework\src\mx\managers\SystemManager.as:3063]
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::kickOff()[E:\dev\hero_private\frameworks\projects\framework\src\mx\managers\SystemManage r.as:2849]
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::preloader_completeHandler()[E:\dev\hero_private\frameworks\projects\framework\src\mx\man agers\SystemManager.as:2729]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.preloaders::Preloader/timerHandler()[E:\dev\hero_private\frameworks\projects\framework \src\mx\preloaders\Preloader.as:542]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()
Any idea?
Thank you

Answer 1

I have resolved, very stupid problem.
The problem was the H.264/MP4 video, which was not encoded with Streaming profile!
Thank you