Image Export Formats
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In general exported subtitles contain image files for every subtitle with unique names and a text script that combines these files. The text script includes in- and out-cues, and information about placement of the images. Title and other information about the subtitled material can also be included. The structure of the script file is usually described in the selected authoring system manuals and in general differs depending on the system.
Based on the intended use of the subtitles, we can distinguish three types of image-based exports:
a. Subtitles intended for Blu-ray and HD-DVD authoring systems:
Authoring System |
Supported image formats |
PNG 8 bit, PNG 32 bit |
|
PNG 8 bit, PNG 32 bit |
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PNG 8bit |
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PNG 8bit |
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BMP 24 bit, BMP 32 bit, TIFF 24 bit, TIFF 32 bit, TIFF 32 bit LZW, PNG 8 bit, PNG 32 bit |
b. Subtitles intended for classic 4-colors DVD authoring systems:
Authoring System |
Supported image formats |
BMP 8 bit, BMP 8 bit RLE, TIFF 8 bit, TIFF 8bit RLE |
|
TIFF 8 bit |
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BMP 8 bit, BMP 8 bit RLE, TIFF 8 bit, TIFF 8 bit LZW |
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BMP 8 bit, BMP 8 bit RLE, TIFF 8 bit, TIFF 8 bit LZW |
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BMP 8 bit, BMP 24 bit, TIFF 8 bit, TIFF 8 bit LZW, TIFF 24 bit |
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BMP 8 bit, BMP 24 bit |
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BMP 8 bit |
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BMP 8 bit, BMP 8 bit RLE, BMP 24 bit, TIFF 8 bit, TIFF 8 bit LZW, TIFF 8bit RLE, TIFF 24 bit |
c. Subtitles intended for use in NLE or other mastering tools:
Authoring System |
Supported image formats |
TIFF 32 bit, TIFF 32 bit LZW, PNG 32 bit |
|
TIFF 32 bit, TIFF 32 bit LZW, PNG 32 bit |
|
TIFF 32 bit, TIFF 32 bit LZW, PNG 32 bit |
|
UYC, UYC RLE |
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BMP 24 bit, BMP 32 bit, TIFF 24 bit, TIFF 32 bit, TIFF 32 bit LZW, PNG 8 bit, PNG 32 bit |