Pictures and voices occupy space and high speed has a great impact on the program.Use pictures, if 256 colors can show the color you want, do not use more than 16-bit or 16-bit true color, this will also make your file is very large. Also, because it is to display pictures on the screen, screen display precision of 72 or 96 dots per inch, it is not necessary to use more than 100 dots per inch of the picture, because at the end of the displayed results are basically the same.
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