Changing framerate does not work

Question

It doesn't seem to matter to the output file I get what kind of framerate I select when constructing the output VideoFormat. Am I doing something wrong ? I want to get a framerate of 30 FPS.
FileTypeDescriptor outputType = new FileTypeDescriptor(
       FileTypeDescriptor.MSVIDEO);
Format outputFormat[] = new Format[1];
Dimension videoDimension = new Dimension(320, 240);
int maxDataLength = 230400;
float fps = 30.0f;
outputFormat[0] = new VideoFormat(VideoFormat.YUV, videoDimension,
       maxDataLength, Format.byteArray, fps);
ProcessorModel processorModel = new ProcessorModel(videoDataSource, outputFormat,
       outputType);

Answer 1

captfoss wrote:
Am I doing something wrong? Probably. I couldn't say because I don't use ProcessorModels (neither does anyone else sucessfully, at least).I see. What's the alternative to using ProcessorModels? And how does the alternative deal with changing the framerate?
>
I want to get a framerate of 30 FPS.That may or may not be possible...regardless, once you get your processor, you need to get the FrameRateControl control on it, and use that to set the frame rate.Hmm. I retrived the controls from the processor, and changed the FrameRateControl one, but it still doesn't seem to change the FPS. If I check out the properties of the video in Windows Explorer or in mplayerc it says it's 4 FPS (trying with 4 FPS since I'm just testing with a webcam ATM and I figured I'd see the difference easier that way), but the video itself runs in 16 FPS (like it always has) and the size of the video file is equvivalant to 16 FPS not 4. Does the capturing device have to support to the framerate you selected?
I suppose this doesn't matter though, if there's an easier way to do this without using ProcessorModels, but I'll include the code anyways.
Control[] controls = processor.getControls();
FrameRateControl frameControl = null;
for(int i = 0; i < controls.length; i++) {
        if(controls[i] instanceof FrameRateControl) {
                frameControl = (FrameRateControl) controls;
frameControl.setFrameRate(fps);
}Edited by: lauritzm on Dec 10, 2008 10:00 AM