/usr/share/gtk-doc/html/gst-plugins-good-plugins-0.10/gst-plugins-good-plugins-ismlmux.html is in gstreamer0.10-plugins-good-doc 0.10.31-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>ismlmux</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.76.1">
<link rel="home" href="index.html" title="GStreamer Good Plugins 0.10 Plugins Reference Manual">
<link rel="up" href="ch01.html" title="gst-plugins-good Elements">
<link rel="prev" href="gst-plugins-good-plugins-interleave.html" title="interleave">
<link rel="next" href="gst-plugins-good-plugins-jackaudiosrc.html" title="jackaudiosrc">
<meta name="generator" content="GTK-Doc V1.18 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="gst-plugins-good-plugins-interleave.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">GStreamer Good Plugins 0.10 Plugins Reference Manual</th>
<td><a accesskey="n" href="gst-plugins-good-plugins-jackaudiosrc.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#gst-plugins-good-plugins-ismlmux.synopsis" class="shortcut">Top</a>
|
<a href="#gst-plugins-good-plugins-ismlmux.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry">
<a name="gst-plugins-good-plugins-ismlmux"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-ismlmux.top_of_page"></a>ismlmux</span></h2>
<p>ismlmux — Muxer for ISML smooth streaming (.isml) files</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gst-plugins-good-plugins-ismlmux.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"></pre>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-ismlmux.description"></a><h2>Description</h2>
<p>
This element merges streams (audio and video) into MJ2 (.mj2) files.
</p>
<p>
The following background intends to explain why various similar muxers
are present in this plugin.
</p>
<p>
The <a class="ulink" href="http://www.apple.com/quicktime/resources/qtfileformat.pdf" target="_top">
QuickTime file format specification</a> served as basis for the MP4 file
format specification (mp4mux), and as such the QuickTime file structure is
nearly identical to the so-called ISO Base Media file format defined in
ISO 14496-12 (except for some media specific parts).
In turn, the latter ISO Base Media format was further specialized as a
Motion JPEG-2000 file format in ISO 15444-3 (mj2mux)
and in various 3GPP(2) specs (gppmux).
The fragmented file features defined (only) in ISO Base Media are used by
ISMV files making up (a.o.) Smooth Streaming (ismlmux).
</p>
<p>
A few properties (movie-timescale,
trak-timescale) allow adjusting
some technical parameters, which might be useful in (rare) cases to resolve
compatibility issues in some situations.
</p>
<p>
Some other properties influence the result more fundamentally.
A typical mov/mp4 file's metadata (aka moov) is located at the end of the file,
somewhat contrary to this usually being called "the header".
However, a faststart file will
(with some effort) arrange this to be located near start of the file,
which then allows it e.g. to be played while downloading.
Alternatively, rather than having one chunk of metadata at start (or end),
there can be some metadata at start and most of the other data can be spread
out into fragments of fragment-duration.
If such fragmented layout is intended for streaming purposes, then
streamable allows foregoing to add
index metadata (at the end of file).
</p>
<p>
dts-method allows selecting a
method for managing input timestamps (stay tuned for 0.11 to have this
automagically settled). The default delta/duration method should handle nice
(aka perfect streams) just fine, but may experience problems otherwise
(e.g. input stream with re-ordered B-frames and/or with frame dropping).
The re-ordering approach re-assigns incoming timestamps in ascending order
to incoming buffers and offers an alternative in such cases. In cases where
that might fail, the remaining method can be tried, which is exact and
according to specs, but might experience playback on not so spec-wise players.
Note that this latter approach also requires one to enable
presentation-timestamp.
</p>
<p>
</p>
<div class="refsect2">
<a name="idm2280"></a><h3>Example pipelines</h3>
<div class="informalexample"><pre class="programlisting">
gst-launch v4l2src num-buffers=50 ! queue ! jp2kenc ! mj2mux ! filesink location=video.mj2
</pre></div>
Records a video stream captured from a v4l2 device, encodes it into JPEG-2000
and muxes it into an mj2 file.
</div>
<p>
</p>
<p>
Documentation last reviewed on 2011-04-21
</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="idp7920048"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
<a class="link" href="gst-plugins-good-plugins-plugin-isomp4.html#plugin-isomp4">isomp4</a>
</td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br></td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec/Muxer</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="idp4822520"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>audio_%d</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>request</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/mpeg, mpegversion=(int)1, layer=(int)3, channels=(int)[ 1, 2 ], rate=(int)[ 1, 2147483647 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/mpeg, mpegversion=(int)4, stream-format=(string)raw, channels=(int)[ 1, 8 ], rate=(int)[ 1, 2147483647 ]</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>video_%d</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>request</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/mpeg, mpegversion=(int)4, systemstream=(boolean)false, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> video/x-divx, divxversion=(int)5, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> video/x-h264, stream-format=(string)avc, alignment=(string)au, width=(int)[ 16, 4096 ], height=(int)[ 16, 4096 ], framerate=(fraction)[ 0/1, 2147483647/1 ]</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/quicktime, variant=(string)iso-fragmented</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-good-plugins-ismlmux.details"></a><h2>Details</h2>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.18</div>
</body>
</html>
|