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Posted to dev@flex.apache.org by "Erik Thomas (JIRA)" <ji...@apache.org> on 2013/02/01 16:00:19 UTC
[jira] [Updated] (FLEX-33374) spark VideoDisplay and VideoPlayer
fails to stream video on mobile devices
[ https://issues.apache.org/jira/browse/FLEX-33374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Erik Thomas updated FLEX-33374:
-------------------------------
Priority: Minor (was: Major)
Description:
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.
UPDATE 2/1/2013 - I've downgraded the priority on this since I wrote my own video controller and display classes that just use NetConnection, NetStream, and Video classes. I guess for mobile that's the more optimized solution anyway, as VideDisplay and VideoPlayer seem pretty heavyweight in comparison. So I'm not waiting on this fix and suggest anyone building a mobile video player should do what I did anyway.
was:
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.
> 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
> Priority: Minor
> Attachments: VideoDisplay.jpg, 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.
> UPDATE 2/1/2013 - I've downgraded the priority on this since I wrote my own video controller and display classes that just use NetConnection, NetStream, and Video classes. I guess for mobile that's the more optimized solution anyway, as VideDisplay and VideoPlayer seem pretty heavyweight in comparison. So I'm not waiting on this fix and suggest anyone building a mobile video player should do what I did anyway.
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Re: [jira] [Updated] (FLEX-33374) spark VideoDisplay and
VideoPlayer fails to stream video on mobile devices
Posted by danielmcquillen <da...@mcquilleninteractive.com>.
Hi Erik,
You wrote "I've downgraded the priority on this since I wrote my own video
controller and display classes that just use NetConnection, NetStream, and
Video classes."
Have you shared your experience tackling NetConnection/NetStream for mobile
on a blog post or similar?
Thanks,
Daniel
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