I was playing around with the same kind of idea some time ago and here
are tips that might help you:
1. First of all, what kind of video files / fps and resolutions we
talking about here? It might be, that your machine simple can't keep up
with bitrate and resolutions. It is quite easy to check out: open
normal QuickTime player with all your videos in separate windows, drag
them to the designated screens and maximize in there. Then start
playback on all screens one by one. If you'll see pure performance
there is nothing you can do about it in your Java program also.
2. Do you use single Java root container stretched over the several
screens with several playback components attached or do you have
several root containers, each for every screen? Single root container
container can dramatically decrease performance, especially on Matrox
cards.
3. It might be good idea, to try out architecture, where instead of
separate threads for every screen/player component, you will have
physically separate java apps for every player with UDP synchronization
between them. Personally, I like this setup most, since it will allow
you also to have distributed players over the net. I've done this kind
of apps before and it works great. However, in you project it might be
requirement to have single machine, isn't it?
4. On Windows with most Matrox multi-headed cards there is a bug that
kills performance of any Java apps that have any references to drawing
classes (Graphics or Graphics2D from Java2D) with big screen
resolutions. Passing following command line argument to Java might
significantly pump up frame rate:
On Jul 26, 2005, at 2:26 PM, Alejandro Luján wrote:
Actually we tried using a non-ht processor and the performance was
worse. We did manage to improve the playback but we're still not
quite there, there is some lag yet.
On the other hand, trying another video card would mean expending a
good few dollars, since the next option costs some hundred dollars. I
need to try all options before changing hardware.
Any other ideas?
Thx
On 7/25/05, George Birbilis <email@hidden> wrote:
try other video-card and try a non hyperthreading machine
The Component received is an awt component, not a swing one.Got any
more ideas? I have ran out of them :(
On 7/25/05, Chris Adamson <email@hidden> wrote:
Any chance you're using the Swing QTJComponent (as opposed to the AWT
QTComponent)?
--Chris
I am implementing a multithread/multiscreen video player with
Quicktime for Java and Im having some performance problems with the
video playback.
--
Alejandro Lujan
Alterity Solutions
Telf: 9432229
Cel: 0414 3168275
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--
Alejandro Lujan
Alterity Solutions
Telf: 9432229
Cel: 0414 3168275
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