[jira] [Updated] (FLEX-33374) spark VideoDisplay and VideoPlayer fails to stream video on mobile devices

["Erik Thomas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLEX-33374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erik Thomas updated FLEX-33374:
-------------------------------

    Attachment: VideoPlayback.zip

Just unzip to a new directory, start FB 4.7 and create a new workspace that points to the directory. Build and run the project in an AIR simulator first. Video streams from my FMS 4.5 server immediately. Do the test again on an actual device, either debug or release, and you will have to wait for about a minute before the video begins to play.

There is no possible way that bandwidth is the issue here. I'm running the device on my same network with the same connectivity and bandwidth as my dev computer. My devices are using WiFi so there's no way cellular bandwidth is playing any role in this issue and even if bandwidth was a contributor it would only delay a start by seconds, not a minute.

I'm just hopeful someone is really familiar with this functionality and will know what's wrong for an easy fix. I'm debugging into the sources now to try to find a root cause, but I'm unfamiliar with the spark internals, especially of MediaPlayer and MediaElement, etc.
                
> spark VideoDisplay and VideoPlayer fails to stream video on mobile devices
> --------------------------------------------------------------------------
>
>                 Key: FLEX-33374
>                 URL: https://issues.apache.org/jira/browse/FLEX-33374
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Spark: VideoPlayer
>    Affects Versions: Adobe Flex SDK 4.6 (Release)
>         Environment: FlashBuilder 4.7 on Windows 7, iPad 3, iPhone 4, remote FMS 4.5 server, FLV Video source in 112K bitrate.
>            Reporter: Erik Thomas
>         Attachments: VideoPlayback.zip
>
>
> The spark VideoDisplay will not stream video from FMS 4.5, instead it appears to do progressive download instead, and it buffers the file for about one minute before it begins to play.
> However, the same code running in FlashPlayer on web, or in an AIR mobile simulator, the video properly streams and displays within seconds of playing.
> I understand VideoDisplay is not "optimized" for mobile, but that should not cause this behavior. I am in the process of debugging the spark codebase to find the root cause, but so far have been unsuccessful. 
> So I attached a project that displays this behavior. Just unzip the file to a directory, start FB and point the workspace to the directory, open the project, build and run it first in an AIR simulator for an iOS mobile device, you'll see video instantly. Then deploy it in debug or release to an actual device. When you launch the project, you have to wait approximately a minute before the video will start playing. 
> I'm assuming it's failing over to progressive download from streaming in some way, but I really have no idea what is causing the issue.
> I really don't care if the performance of the VideoDisplay isn't optimized for mobile, and a delayed start of several seconds would be fine, but one minute? 
> If I find a root cause I will update this defect record with my findings as this is a blocker for us so that's my focus.

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