120 lines
3.5 KiB
HTML
120 lines
3.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- (this file generated automatically by Image::ExifTool::BuildTagLookup) -->
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<head>
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<title>BPG Tags</title>
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<link rel=stylesheet type='text/css' href='style.css' title='Style'>
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</head>
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<body>
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<h2 class=top>BPG Tags</h2>
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<p>The information listed below is extracted from BPG (Better Portable
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Graphics) images. See <a href="http://bellard.org/bpg/">http://bellard.org/bpg/</a> for the specification.</p>
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<blockquote>
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<table class=frame><tr><td>
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<table class=inner cellspacing=1>
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<tr class=h><th>Index1</th><th>Tag Name</th>
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<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
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<tr>
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<td class=r title='4 = 0x4'>4</td>
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<td>PixelFormat</td>
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<td class=c>no</td>
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<td><span class=s>[val >> 13 & 0x7]</span><table class=cols><tr>
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<td>0 = Grayscale
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<br>1 = 4:2:0 (chroma at 0.5, 0.5)
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<br>2 = 4:2:2 (chroma at 0.5, 0)
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<br>3 = 4:4:4
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<br>4 = 4:2:0 (chroma at 0, 0.5)
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<br>5 = 4:2:2 (chroma at 0, 0)</td></tr></table>
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</td></tr>
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<tr class=b>
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<td class=r title='4 = 0x4'>4.1</td>
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<td>Alpha</td>
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<td class=c>no</td>
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<td><span class=s>[val & 0x1004]
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<br>0x0 = No Alpha Plane
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<br>0x4 = Alpha Exists (W color component)
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<br>0x1000 = Alpha Exists (color not premultiplied)
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<br>0x1004 = Alpha Exists (color premultiplied)</span></td></tr>
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<tr>
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<td class=r title='4 = 0x4'>4.2</td>
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<td>BitDepth</td>
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<td class=c>no</td>
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<td><span class=s>[val >> 8 & 0xf]</span></td></tr>
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<tr class=b>
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<td class=r title='4 = 0x4'>4.3</td>
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<td>ColorSpace</td>
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<td class=c>no</td>
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<td><span class=s>[val >> 4 & 0xf]</span><table class=cols><tr>
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<td>0 = YCbCr (BT 601)
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<br>1 = RGB
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<br>2 = YCgCo
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<br>3 = YCbCr (BT 709)
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<br>4 = YCbCr (BT 2020)
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<br>5 = BT 2020 Constant Luminance</td></tr></table>
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</td></tr>
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<tr>
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<td class=r title='4 = 0x4'>4.4</td>
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<td>Flags</td>
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<td class=c>no</td>
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<td><span class=s>[val & 0xb]
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<br>Bit 0 = Animation
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<br>Bit 1 = Limited Range
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<br>Bit 3 = Extension Present</span></td></tr>
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<tr class=b>
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<td class=r title='6 = 0x6'>6</td>
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<td>ImageWidth</td>
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<td class=c>no</td>
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<td> </td></tr>
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<tr>
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<td class=r title='7 = 0x7'>7</td>
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<td>ImageHeight</td>
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<td class=c>no</td>
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<td> </td></tr>
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<tr class=b>
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<td class=r title='8 = 0x8'>8</td>
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<td>ImageLength</td>
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<td class=c>no</td>
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<td> </td></tr>
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</table></td></tr></table></blockquote>
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<h2><a name='Extensions'>BPG Extensions Tags</a></h2>
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<blockquote>
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<table class=frame><tr><td>
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<table class=inner cellspacing=1>
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<tr class=h><th>Tag ID</th><th>Tag Name</th>
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<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
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<tr>
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<td title='0x0001 = 1'>0x0001</td>
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<td>EXIF</td>
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<td class=c>-</td>
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<td>--> <a href='EXIF.html'>EXIF Tags</a></td></tr>
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<tr class=b>
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<td title='0x0002 = 2'>0x0002</td>
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<td>ICC_Profile</td>
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<td class=c>-</td>
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<td>--> <a href='ICC_Profile.html'>ICC_Profile Tags</a></td></tr>
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<tr>
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<td title='0x0003 = 3'>0x0003</td>
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<td>XMP</td>
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<td class=c>-</td>
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<td>--> <a href='XMP.html'>XMP Tags</a></td></tr>
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<tr class=b>
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<td title='0x0004 = 4'>0x0004</td>
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<td>ThumbnailBPG</td>
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<td class=c>no</td>
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<td> </td></tr>
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<tr>
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<td title='0x0005 = 5'>0x0005</td>
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<td>AnimationControl?</td>
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<td class=c>no</td>
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<td> </td></tr>
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</table></td></tr></table></blockquote>
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<hr>
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(This document generated automatically by Image::ExifTool::BuildTagLookup)
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<br><i>Last revised Oct 24, 2018</i>
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<p class=lf><a href='index.html'><-- ExifTool Tag Names</a></p>
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</body>
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</html>
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