High-Definition Blu-ray Slide Show SDK
1920x1080 pixel slides
Slide show is a continuous presentation of a sequence of still images, with or without background music. The duration of each image is controlled by the assigned duration time. The duration for each image may vary, depending on the user's assignments. The background music can be continued from one image to the next one without interruption. The background audio settings are depending on the user's choice.
Each slide image is formed a 'chapter' in the sequence. During the slide show presentation, viewer is able to browse images by activating the 'Next' or 'Prev' button on the remote controller.
The authoring SDK has the built-in encoder for MPEG 'I' frame. This encoder is able to compress the image into a 1920x1080 pixels picture.
Each title in the BDMV volume is able to include up to 999 slide images. When user has more than 999 slide images, additional titles can be compiled during the authoring stage to include the rest images and background audio files.
Encoding Process Overview
The built-in encoder routine in the authoring library for compressing slide images follows the standard algorithm stated in ISO13818 Spec. The color components of pixels of the source image are converted into YCbCr color space before forming 2D DCT coefficients. A default quantization table is applied during intra coding. An I frame, therefore, is formed within the final step of integrating a bit stream using variable length coding method (VLC).
This encoder has built-in routine to proportionally re-size input image size when input image size does not meet the maximum frame size (1920x1080 pixels). Thus the output slide image matches the maximum resolution.
A dedicated ‘class’ has been developed to include all the functions to serve the needs for image encoding in the authoring library. When running the compilation, the authoring library creates objects of the encoding class and calls different functions in the object to output the result during each process step.
Illustrations
(Slide Title - Main Path)
(chapter 1)
-----
(chapter n)
(Slide Title with
background music - Sub Path)
(chapter 1)
-----
(chapter
n)