File: MPEG.html

package info (click to toggle)
libimage-exiftool-perl 11.16-1%2Bdeb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 24,024 kB
  • sloc: perl: 245,177; xml: 120; makefile: 9
file content (249 lines) | stat: -rw-r--r-- 6,443 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>MPEG Tags</title>
<link rel=stylesheet type='text/css' href='style.css' title='Style'>
</head>
<body>
<h2 class=top>MPEG Tags</h2>
<p>
The MPEG format doesn&#39;t specify any file-level meta information.  In lieu of
this, information is extracted from the first audio and video frame headers
in the file.
</p>
<h2><a name='Audio'>MPEG Audio Tags</a></h2>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Tag&nbsp;ID</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td>'Bit11-12'</td>
<td>MPEGAudioVersion</td>
<td class=c>no</td>
<td><span class=s>0 = 2.5
  <br>2 = 2
  <br>3 = 1</span></td></tr>
<tr class=b>
<td>'Bit13-14'</td>
<td>AudioLayer</td>
<td class=c>no</td>
<td><span class=s>1 = 3
  <br>2 = 2
  <br>3 = 1</span></td></tr>
<tr>
<td>'Bit16-19'</td>
<td>AudioBitrate</td>
<td class=c>no</td>
<td><span class=s><span class=n>(version 1, layer 1)</span>
  <br><span class=n>(version 1, layer 2)</span>
  <br><span class=n>(version 1, layer 3)</span>
  <br><span class=n>(version 2 or 2.5, layer 1)</span>
  <br><span class=n>(version 2 or 2.5, layer 2 or 3)</span></span></td></tr>
<tr class=b>
<td>'Bit20-21'</td>
<td>SampleRate</td>
<td class=c>no</td>
<td><span class=s><span class=n>(version 1)</span>
  <br>0 = 44100
  <br>1 = 48000
  <br>2 = 32000
  <br><span class=n>(version 2)</span>
  <br>0 = 22050
  <br>1 = 24000
  <br>2 = 16000
  <br><span class=n>(version 2.5)</span>
  <br>0 = 11025
  <br>1 = 12000
  <br>2 = 8000</span></td></tr>
<tr>
<td>'Bit24-25'</td>
<td>ChannelMode</td>
<td class=c>no</td>
<td><span class=s>0 = Stereo
  <br>1 = Joint Stereo
  <br>2 = Dual Channel
  <br>3 = Single Channel</span></td></tr>
<tr class=b>
<td>'Bit26'</td>
<td>MSStereo</td>
<td class=c>no</td>
<td><span class=s><span class=n>(layer 3)</span>
  <br>0 = Off
  <br>1 = On</span></td></tr>
<tr>
<td>'Bit26-27'</td>
<td>ModeExtension</td>
<td class=c>no</td>
<td><span class=s><span class=n>(layer 1 or 2)</span>
  <br>0 = Bands 4-31
  <br>1 = Bands 8-31
  <br>2 = Bands 12-31
  <br>3 = Bands 16-31</span></td></tr>
<tr class=b>
<td>'Bit27'</td>
<td>IntensityStereo</td>
<td class=c>no</td>
<td><span class=s><span class=n>(layer 3)</span>
  <br>0 = Off
  <br>1 = On</span></td></tr>
<tr>
<td>'Bit28'</td>
<td>CopyrightFlag</td>
<td class=c>no</td>
<td><span class=s>0 = False
  <br>1 = True</span></td></tr>
<tr class=b>
<td>'Bit29'</td>
<td>OriginalMedia</td>
<td class=c>no</td>
<td><span class=s>0 = False
  <br>1 = True</span></td></tr>
<tr>
<td>'Bit30-31'</td>
<td>Emphasis</td>
<td class=c>no</td>
<td><span class=s>0 = None
  <br>1 = 50/15 ms
  <br>2 = reserved
  <br>3 = CCIT J.17</span></td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Video'>MPEG Video Tags</a></h2>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Tag&nbsp;ID</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td>'Bit00-11'</td>
<td>ImageWidth</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>'Bit12-23'</td>
<td>ImageHeight</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td>'Bit24-27'</td>
<td>AspectRatio</td>
<td class=c>no</td>
<td><table class=cols><tr>
  <td>2 =&gt; 0.6735 = 0.6735
  <br>3 =&gt; 0.7031 = 16:9, 625 line, PAL
  <br>4 =&gt; 0.7615 = 0.7615
  <br>5 =&gt; 0.8055 = 0.8055
  <br>6 =&gt; 0.8437 = 16:9, 525 line, NTSC
  <br>7 =&gt; 0.8935 = 0.8935
  <br>8 =&gt; 0.9157 = 4:3, 625 line, PAL, CCIR601
  <br>9 =&gt; 0.9815 = 0.9815
  <br>1 =&gt; 1 = 1:1
  <br>12 =&gt; 1.095 = 4:3, 525 line, NTSC, CCIR601
  <br>10 =&gt; 1.0255 = 1.0255
  <br>11 =&gt; 1.0695 = 1.0695
  <br>13 =&gt; 1.1575 = 1.1575
  <br>14 =&gt; 1.2015 = 1.2015</td></tr></table>
</td></tr>
<tr class=b>
<td>'Bit28-31'</td>
<td>FrameRate</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td>'Bit32-49'</td>
<td>VideoBitrate</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Xing'>MPEG Xing Tags</a></h2>
<p>These tags are extracted from the Xing/Info frame.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td>Encoder</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>LameHeader</td>
<td class=c>-</td>
<td>--&gt; <a href='MPEG.html#Lame'>MPEG Lame Tags</a></td></tr>
<tr>
<td>LameQuality</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>LameVBRQuality</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td>VBRBytes</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td>VBRFrames</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td>VBRScale</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Lame'>MPEG Lame Tags</a></h2>
<p>Tags extracted from Lame 3.90 or later header.</p>
<blockquote>
<table class=frame><tr><td>
<table class=inner cellspacing=1>
<tr class=h><th>Index1</th><th>Tag Name</th>
<th>Writable</th><th>Values / <span class=n>Notes</span></th></tr>
<tr>
<td class=r title='9 = 0x9'>9</td>
<td>LameMethod</td>
<td class=c>no</td>
<td><span class=s>[val &amp; 0xf]</span><table class=cols><tr>
  <td>1 = CBR
  <br>2 = ABR
  <br>3 = VBR (old/rh)
  <br>4 = VBR (new/mtrh)</td><td>&nbsp;&nbsp;</td>
  <td>5 = VBR (old/rh)
  <br>6 = VBR
  <br>8 = CBR (2-pass)
  <br>9 = ABR (2-pass)</td></tr></table>
</td></tr>
<tr class=b>
<td class=r title='10 = 0xa'>10</td>
<td>LameLowPassFilter</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr>
<td class=r title='20 = 0x14'>20</td>
<td>LameBitrate</td>
<td class=c>no</td>
<td>&nbsp;</td></tr>
<tr class=b>
<td class=r title='24 = 0x18'>24</td>
<td>LameStereoMode</td>
<td class=c>no</td>
<td><span class=s>[val &gt;&gt; 2 &amp; 0x7]</span><table class=cols><tr>
  <td>0 = Mono
  <br>1 = Stereo
  <br>2 = Dual Channels
  <br>3 = Joint Stereo</td><td>&nbsp;&nbsp;</td>
  <td>4 = Forced Joint Stereo
  <br>6 = Auto
  <br>7 = Intensity Stereo</td></tr></table>
</td></tr>
</table></td></tr></table></blockquote>

<hr>
(This document generated automatically by Image::ExifTool::BuildTagLookup)
<br><i>Last revised Oct 24, 2018</i>
<p class=lf><a href='index.html'>&lt;-- ExifTool Tag Names</a></p>
</body>
</html>