I have to play video loop (2 second HD quality), and there is problem with playing video from the begining because method seek(0) always freeze Flash Player for a moment. There is now way to avoid this problem.
I have an idea, to play 2 netstreams in 2 separeted workers, but dont know how to share stage to do this ;[.
i have same problem.
i have embed the flv video in swf and play it in time line .
with embed vido you can loop it smoothly, this is a good solution in some cases.
(unconditionally embedding the video in swf have performance issue increased when ever your project become more complicated.
another issue is the swf file size become larger and larger
)
Related
I'm using the flvplayback component in an AS3 movieclip. I do have the source defined in the compontents properties to a video hosted on Amazon s3.
Now the problem is as soon as the swf loads in a browser it starts downloading/buffering the video even though it's not set to autoplay.
Is it possible to only have it start downloading if the play button is clicked (I do have a custom play button hooked up to player via AS3)? I have 3 separate video players in the swf each with fairly large videos and I don't really want to burn through a ton of bandwidth especially if the user only plays one video.
Thanks!
I haven't used the flvplaybackcomponent, but I'm assuming as soon as you specify a url, it'll start downloading. Try either not setting that until it's been interacted with, or -- do what everyone else does -- place an clickable image on top, then once that's done, create your video player.
I am making a HTML5/javascript browser game and I have problems with my audio.
I have all my clips in a single mp3 file to minmize the number of requests sent and when I want to play a clip I seek to the clips starting position (audio.currentTime = startTime) and play (audio.play()) when the audio tag fires the "seeked" event via an event listner.
When I pause playback I use the audio.pause() method.
The problem I have is that, before the sound I want to play starts, a split second of the file is played from where the audio was playing before the seek.
Anyone else that has encountered this problem?
Anyone know what to do about it?
If you're using Safari, this might be your problem.
Also, I'm finding that Web Audio API is looking more and more appealing (see my possible answer to my own question, haha)
Edit:
Lastly, if you want to stick with the whole HTML5 Audio object, this question might point you in a different direction.
I'm having some serious problems with flash at the moment. I have a swf loaded that uses Stage3D, displaying 3D content. When I overlay a video player, on full screen size, it will cause massive lag/jitter in the video content. The video content is loaded locally so there is no streaming to take into account. This only happens on some machines but considering the project this cannot be neglected.
I have since recoded my project to remove any form of loading i was doing with a Loader and just directly put the file path into the netstream and have then attached the netstream to StageVideo. But the problem still persists and I am at my wits end. I even set Stage3D to invisible during video playback.
It's a complete horror to debug because it's simply not a problem on my machine, but out of 10 people 4 of them have reported this problem and we can't release our product like this.
Any help to resolve this would be greatly valued and appreciated.
Regards,
Kevin
Well as StageVideo is using GPU like Stage3D does. So I guess those two stages are interrupting each other processing on GPU (especially on older video cards).
So my answer is to try to stop that video while you are working on Stage3D.
I'm building a large flash site (AS3) that uses huge FLVs as transition videos from section to section. The FLVs are 1280x800 and are being scaled to 1680x1050 (much of which is not displayed to users with smaller screens), and are around 5-8 seconds apiece. I'm encoding the videos using On2's hi-def codec, VP6-S, and playback is pretty good with native FLV players, Perian-equipped Quicktime, and simple proof-of-concept FLV playback apps built in AS3.
The problem I'm having is that in the context of the actual site, playback isn't as smooth; the framerate isn't quite as good as it should be, and more problematically, there's occasional jerkiness and dropped frames (sometimes pausing the video for as long as a quarter of a second or so). My guess is that this is being caused by garbage collection in the Flash player, which happens nondeterministically and is therefore hard to test and control for.
I'm using a single instance of FLVPlayback to play the videos; I originally was using NetStream objects and so forth directly but switched to FLVPlayback for this reason. Has anyone experienced this sort of jerkiness with FLVPlayback (or more generally, with hi-def Flash video)? Am I right about GC being the culprit here, and if so, is there any way to prevent it during playback of these system-intensive transitions?
Jerkiness in FLV/F4V playback is hardly the result of garbage collection - the video is actually kept in memory until it is fully unloaded, so there's no garbage collection taking place at all (unless you've done something unorthodox like placing the video on a container with cacheAsBitmap set to true).
Switching to F4Vs if you don't need specific FLV features (like the link posted by daidai suggests - disclaimer, it's my blog) would help, but overall, you also have to be aware of anything that's impacting compositing of the video on screen. Because a big size video forces everything that's overlapping it to be re-rendered, any small object can have a big impact on performance.
Do you have things on top of the video? Try getting rid of them, if possible, or setting cacheAsBitmap to true (if they're not animated). This is specially good for complex vector drawings or text (bitmaps/images are much faster to draw). If they have different blending modes, you're sort of screwed - can you use the normal blending mode instead?
Do you have anything below the video? If so, get rid of them while the video is playing (just set visibility to false).
To check on unnecessary renderings, somehow pause the video, right-click, turn on 'show redrawn regions' (debug player). Do you see the red square drawing continuously? Then there's something happening there on the background, better to get rid of it.
Do you have anything happening on the background via onEnterFrame or timers/intervals? Try pausing it.
Is your video 30fps, and a CG rendering (eg, can use motion blur)? If yes, try rendering at 24fps instead, or something between - still good quality, but much less data to decode and draw.
Can you use smaller videos? Even if you're still rendering them at the same bigger size, less pixel data to decode and render helps immensely, and the impact in quality can be pretty small.
That pretty much sums it all. Getting rid of everything else on screen is usually your #1 priority though.
Have you tried encoding the videos in H.264 instead? Flash player supports them for some time now, it may end up working better. That's what most people doing HD video in Flash use (eg Youtube, Vimeo, etc).
Just as a test, try plaing a 1080p HD video on youtube and see if that pauses at all for you.
Check out http://zehfernando.com/2010/benchmarking-video-playback-performance-in-flash/
I have a simple video player set up that streams from a flash media server. The video plays fine, but the majority of the seek commands send it back to the first frame of the video. If I don't use flash media server it will seek to any point which has already been loaded.
Any ideas what could cause this?
Try and download jw player from here http://www.longtailvideo.com/players/jw-flv-player/ and test if it works with that player. The problem could lay with the streaming server.
the majority of the seek commands send
it back to the first frame
What happens with the rest? - Do they work or does nothing happen?
The problem was I was checking the FLVPlayback playing property to see if I wanted to call play after the seek (The video didn't auto-play, and I wanted it to play if you seeked). The playing property however is set to false after a seek call till it is done seeking apparently. This resulted in play being called every time, which reset the playhead to the start.