Overview
Installation
Usage
FAQ
Contact  
 

Overview

This MPEG-4 Video decoder brings the new MPEG-4 Video compression technology to the Java developers community, enabling them to decode MPEG-4 video in Java. The decoder is pure Java and can be used on any JMF enabled platform. It allows for the decoding of MPEG-4 video streams, which are created with the any encoder supporting the Simple Profile.

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Installation

System Requirements:

• JMF2.1.1 and above.
• All JMF requirements

1. Add MPEG4VideoDecoderEval.zip file to your CLASSPATH (including the path in which the zip file is located).
2. Open JMF Registry.
3. Click the PlugIns tab.
4. Click the Codec tab.
5. Enter com.ibm.media.codec.video.mpg4.JavaDecoder to the Codec text field, and click Add button. 
6. Click Commit button.
   

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Usage

Before using this decoder, register it within the JMFRegistry. To register the decoder, see the installation section.

1. Open the avi file with the MPEG-4 video 
2. Click Play.

• To access the decoder, use com.ibm.media.codec.video.mpg4.JavaDecoder   as the class name.
• The input format of the decoder should be set to one of the decoder's input formats. See the full list in JMRegistry.
• The output format of the decoder should be set to javac.media.format.RGBFormat or javax.media.format.YUVFormat with the appropriate properties of the video (frame size, frame rate, etc.).

FAQ

Q: How can I use this decoder?
A: You should use it as a decoder for the Java Media Framework, version 2.1 and above.

Q: Where can I obtain JMF?
A: To obtain JMF, follow this link to the JMF home page .

Q: Is the decoder 100% pure Java?
A: Yes.

Q: Which MPEG-4 Profile does the decoder support?
A: The decoder fully supports the MPEG-4 Visual (ISO/IEC 14496-2), Version 2, Simple Profile.

Q: Is this decoder different from the previous version released on alphaWorks?
A: The decoder has the same functionality as the previous version with the addition of RVLC support. This version also includes significant performance improvements.

Q: How can I disable the IBM logo that appears on the video?
A: The logo appears on this evaluation version. The licensed version will not have any logo shown.

Q: Where is the encoder?
A. At this stage we can not release the encoder due to legal issues involved with MPEG-4. You should use third party encoders that support the MPEG-4 video Simple Profile such as Divx . 
 
Q: Does the decoder support RTP?
A: Yes. The decoder supports modes D and F as defined in RFC3016.

Q: Are there also native versions for improved performance?
A: Yes. We currently have native versions for Windows (x86), PocketPC (ARM), AIX (PPC). Please contact noimark@il.ibm.com for more information.

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Contact

The MPEG-4 codec was developed at the Telecom and Media Systems Group, IBM Research Lab in Haifa.

For more information, contact: noimark@il.ibm.com

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