Hi,
You were kind enough to reply to my last query about JMF, and so I'm
sending you another question. If this is inappropriate, please ignore
this message.
I'm try to creating a quicktime movie (actually any kind of movie, but
quicktime is the proof of concept) from a series of BufferedImages using
the Java Media Framework. I'm using the javax.media.util.ImageToBuffer
class to convert the BufferedImages to convert the Image to a JMF Buffer
object. I pass these buffer objects to a custom DataSource that pipes
these buffers to a Processor. My problem seems to arise with the Format
for the Buffer objects. If I set the Format of the DataSourceStream (a
PullBufferStream) to the Format associated with the Buffer object
(RGBFormat, I think) JMF barfs. The entire jmf.log file follows:
H:\JBuilder3\myclasses>less jmf.log
#
# JMF Version 2.0
#
## Platform: Windows NT, x86, 4.0
## Java VM: Sun Microsystems Inc., 1.2.2
$$ Profile: instantiation: 40 ms
## Processor created: com.sun.media.processor.unknown.Handler@7efe3f
## using DataSource: uchicago.src.sim.gui.BufferDataSource@303be0
$$ Profile: parsing: 20 ms
## Building flow graph for: null
## Building Track: 0
## Input: RGB, 505x505, FrameRate=1.0, Length=256540, 32-bit,
Masks=16711680:652
80:255, LineStride=508, class [I
## Connect to multplexer:
## Output content type: video.quicktime
XX Failed to find a multiplexer for the specified output.
XX Failed to realize: com.sun.media.MediaEngine@bbc5a
XX Cannot connect the multiplexer
$$ Profile: instantiation: 0 ms
## Processor created: com.sun.media.processor.unknown.Handler@4743eb
## using DataSource: uchicago.src.sim.gui.BufferDataSource@7736bd
$$ Profile: parsing: 0 ms
$$ Profile: instantiation: 0 ms
## Processor created: com.sun.media.processor.unknown.Handler@12f9ee
## using DataSource: uchicago.src.sim.gui.BufferDataSource@3ae941
$$ Profile: parsing: 0 ms
## Building flow graph for: null
## Building Track: 0
## Input: RGB, 505x505, FrameRate=1.0, Length=256540, 32-bit,
Masks=16711680:652
80:255, LineStride=508, class [I
## Connect to multplexer:
## Output content type: video.quicktime
XX Failed to find a multiplexer for the specified output.
XX Failed to realize: com.sun.media.MediaEngine@5a669c
XX Cannot connect the multiplexer
My question then is how to set the format so a quicktime movie can be
generated. If I set the format to say VideoFormat(VideoFormat.JPEG...)
then DataSourceStream.read(Buffer buf) has problems. The Buffers
converted from Images contain int[] as data while the passed Buffer
seems to expect byte[] (I'm assuming because of the format). Needless to
say I'm a bit confused, so any help is appreciated.
By the way, I'm basing some of my code on the JpegImagesToMovie example,
and while this seems to work (i.e. no error messages and the jmf.log
seems okay) when I try to play the resulting movie with the latest
QuickTime player I can't an error message telling me it can't open the
movie. So perhaps, something is broken with JMF quicktime.
thanks,
Nick
--
Nick Collier
[EMAIL PROTECTED]
Social Science Research Computing
University of Chicago
Chicago, IL 60637
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