Re: JPEG to Movie.java

Sir,
I have started new Post.Can u now assist me Sir?
I saw JMF code samples section that would convert JPEG images to .Mov files.
I tried to run that code by giving 2 images as runtime parameters.
But i got NullPointerException
Here are the list of Exceptions i got
create processor for the image datasource ...
Setting the track format to: JPEG
- create DataSink for: file:C:\Documents and Settings\Desktop\JMFCodeSamples\Generating a Movie File from a List of (JPEG) Images
start processing...
- reading image file: file\\:1.JPEG
Done reading all images.
Exception in thread "JMF thread: SendEventQueue: com.sun.media.processor.unknown
.Handler" java.lang.NullPointerException
        at com.sun.media.multiplexer.video.QuicktimeMux.writeVideoSampleDescript
ion(QuicktimeMux.java:936)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeSTSD(QuicktimeMux.j
ava:925)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeSTBL(QuicktimeMux.j
ava:905)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeMINF(QuicktimeMux.j
ava:806)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeMDIA(QuicktimeMux.j
ava:727)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeTRAK(QuicktimeMux.j
ava:644)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeMOOV(QuicktimeMux.j
ava:582)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeFooter(QuicktimeMux
.java:519)
        at com.sun.media.multiplexer.BasicMux.close(BasicMux.java:142)
        at com.sun.media.BasicMuxModule.doClose(BasicMuxModule.java:172)
        at com.sun.media.PlaybackEngine.doClose(PlaybackEngine.java:872)
        at com.sun.media.BasicController.close(BasicController.java:261)
        at com.sun.media.BasicPlayer.doClose(BasicPlayer.java:229)
        at com.sun.media.BasicController.close(BasicController.java:261)
        at JpegImagesToMovie.controllerUpdate(JpegImagesToMovie.java:196)
        at com.sun.media.BasicController.dispatchEvent(BasicController.java:1254
        at com.sun.media.SendEventQueue.processEvent(BasicController.java:1286)
        at com.sun.media.util.ThreadedEventQueue.dispatchEvents(ThreadedEventQue
ue.java:65)
        at com.sun.media.util.ThreadedEventQueue.run(ThreadedEventQueue.java:92)actually wat went wrong???
can u please tell us??
We expect your suggestions sir...
Thanks in advance sir!!!

Sir Sorry i forgot to specify it.
Here i have specified.
D:\StudyMaterials\JMFCodeSamples\Generating a Movie File from a List of (JPEG) I
mages>java JpegImagesToMovie -w 320 -h 240 -f 1 file:\1.JPEG
Usage: java JpegImagesToMovie -w <width> -h <height> -f <frame rate> -o <output
URL> <input JPEG file 1> <input JPEG file 2> ...
D:\StudyMaterials\JMFCodeSamples\Generating a Movie File from a List of (JPEG) I
mages>java JpegImagesToMovie -w 320 -h 240 -f 1 -o file:\e.mov file:\1.JPEG
- create processor for the image datasource ...
Setting the track format to: JPEG
- create DataSink for: file:\e.mov
start processing...
- reading image file: file:\1.JPEG
Done reading all images.
Exception in thread "JMF thread: SendEventQueue: com.sun.media.processor.unknown
.Handler" java.lang.NullPointerException
        at com.sun.media.multiplexer.video.QuicktimeMux.writeVideoSampleDescript
ion(QuicktimeMux.java:936)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeSTSD(QuicktimeMux.j
ava:925)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeSTBL(QuicktimeMux.j
ava:905)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeMINF(QuicktimeMux.j
ava:806)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeMDIA(QuicktimeMux.j
ava:727)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeTRAK(QuicktimeMux.j
ava:644)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeMOOV(QuicktimeMux.j
ava:582)
        at com.sun.media.multiplexer.video.QuicktimeMux.writeFooter(QuicktimeMux
.java:519)
        at com.sun.media.multiplexer.BasicMux.close(BasicMux.java:142)
        at com.sun.media.BasicMuxModule.doClose(BasicMuxModule.java:172)
        at com.sun.media.PlaybackEngine.doClose(PlaybackEngine.java:872)
        at com.sun.media.BasicController.close(BasicController.java:261)
        at com.sun.media.BasicPlayer.doClose(BasicPlayer.java:229)
        at com.sun.media.BasicController.close(BasicController.java:261)
        at JpegImagesToMovie.controllerUpdate(JpegImagesToMovie.java:196)
        at com.sun.media.BasicController.dispatchEvent(BasicController.java:1254
        at com.sun.media.SendEventQueue.processEvent(BasicController.java:1286)
        at com.sun.media.util.ThreadedEventQueue.dispatchEvents(ThreadedEventQue
ue.java:65)
        at com.sun.media.util.ThreadedEventQueue.run(ThreadedEventQueue.java:92)

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I am new to Java Media Framework and I'm sorry about my English is really poor.
I read articles , like :
[Generating a Movie File from a List of (JPEG) Images|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/JpegImagesToMovie.html]
[Merging Tracks from Multiple Inputs|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/Merge.html]
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[ Question 1 ]
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$ java JpegImagesToMovie -w 320 -h 240 -f 1 -o file:2.mov file:foo3.jpg file:foo4.jpg
$ ...
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the real cmd :
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$ java -classpath jmf.jar:. JpegImagesToMovie -w 691 -h 299 -f 1 -o file:b.mov /images/3.jpg /images/4.jpg
$ java -classpath jmf.jar:. Merge -o file:result.mov file:a.mov file:b.mov
[ Question 2 ]
I use [Writing AVI videos using pure Java|http://blog.hslu.ch/rawcoder/2008/08/12/writing-avi-videos-using-pure-java/] to merge images(jpg) into a avi file, and it works correctly. the type is MJPG/MJPEG.
like [Question 1] , 1.avi and 2.avi made, and then , I can use the avimerge tool to merge them into the result.avi , and it works correctly.
but I cannot merge them by [Merging Tracks from Multiple Inputs|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/Merge.html] even if I change the code of Merge.java :
@49 : String videoEncoding = "MJPG";
@51 : String outputType = FileTypeDescriptor.MSVIDEO;which is according to [Class VideoFormat|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/apidocs/javax/media/format/VideoFormat.html] and [Class FileTypeDescriptor|http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/apidocs/javax/media/protocol/FileTypeDescriptor.html] .
the real cmd :
$ java -classpath jmf.jar:. Merge -o file:result.avi file:a.avi file:b.avi
but I cannot play it correctly.
Thanks for your help !!

hello.there wrote:
hi shadowLife ,
I am also a newbie to this filed.Curently i am working on Video conference tool using JMF. I also need to merge the mulitple audio files and i found, it is possible.
One of my friend tried to merge the two video files, but the problem is that when you play them it plays only first video. As these videos are stored as multiple tracks so only one trakc is played at a time. If you want to see the other video then there should be a option of seeing video track in your player like it is in VLC player.
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One way to do this is to play both video on some panel and capture the screen ( i heard that is is possible in java) then create a video from this captured images.It is possible to do that, but you would never want to do something like that... There are more problems with that idea than I can count, just stemming from the fact that that is a very, very hacky solution.
Certainly there are instances where this might be necessary, but anything like that would absolutely be a last-ditch effort and could never be included in any sort of publishable software...
Hope this information will help you.
May be, i can be wrong so hoping for others reply on that. this will help me also for making my fundamentals and knowledge strong.Can be wrong and mostly were ;-) But it's a learning experience for everyone, eh?

FrameAccess.java: Modifying frame rate capture ?

I'm currently supposed to capture the keyframes in a video and I've managed to find FrameAccess.java that has allowed me to capture all the frames in the video.
However, I do not need to capture every single frame; just need to capture frames maybe every 20 seconds or so.
-> Therefore, how do I go about doing it?
Also, when I ran FrameAccess.java, it seems that when it has reached the end of the video, it will keep trying to capture the last frame and it won't end until I manually end it.
-> How do I rectify this error?
I really hope someone can help. Thanks in advanced.
Edited by: silentvisual on Mar 4, 2009 1:08 AM

However, I do not need to capture every single frame; just need to capture frames maybe every 20 seconds or so. You can grab the frames using FrameGrabbingControl. Then why use FrameAccess.java??
If you use FrameGrabbingControl, then using Timer you can grab frames at whatever interval you want, e.g. try the following code:
[http://forums.sun.com/thread.jspa?messageID=10595229#10595229]
It uses a timer to grab frames at 30ms (you can make it 1000ms or anything by changing this line : " timer = new Timer(30, this);" ).
Now, I don't know what you want to do after capturing images, do you want to save images only or do you want to make a video from this, if this is the case then you can search for "Jpeg to Movie" JMF program example on this site.
Also, when I ran FrameAccess.java, it seems that when it has reached the end of the video, it will keep trying to capture the last frame and it won't end until I manually end it. For me, there is no such problem. The program ends when the end of video file is reached.
Thanks!

Buffer to movie frames (AVI/QuickTime)

I'm working on adding JMF movie functionality to Mathematica through J/Link and JMF. Mathematica's Java extensions don't allow you to write things like a custom datasource, but I have managed to grab individual frames. I would like to be able to image processing and then output the resulting images into a movie. Could I use a codec to take individual images and output them directly into an AVI or QuickTime movie? Any input would be appreciated.

Try looking at suns JPEGS to movie example

Re: JPEG to Movie.java

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