/* Quicktime muxer documentation * Copyright (C) 2008-2010 Thiago Santos * Copyright (C) 2008 Mark Nauwelaerts * Copyright (C) 2010 Nokia Corporation. All rights reserved. * Contact: Stefan Kost * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /* * Unless otherwise indicated, Source Code is licensed under MIT license. * See further explanation attached in License Statement (distributed in the file * LICENSE). * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is furnished to do * so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* ============================= mp4mux ==================================== */ /** * SECTION:element-mp4mux * @short_description: Muxer for ISO MPEG-4 (.mp4) files * * This element merges streams (audio and video) into ISO MPEG-4 (.mp4) files. * * The following background intends to explain why various similar muxers * are present in this plugin. * * The * QuickTime file format specification 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 (3gppmux). * The fragmented file features defined (only) in ISO Base Media are used by * ISMV files making up (a.o.) Smooth Streaming (ismlmux). * * A few properties (#GstMp4Mux:movie-timescale, #GstMp4Mux:trak-timescale) * allow adjusting some technical parameters, which might be useful in (rare) * cases to resolve compatibility issues in some situations. * * 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 #GstMp4Mux: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 #GstMp4Mux:fragment-duration. * If such fragmented layout is intended for streaming purposes, then * #GstMp4Mux:streamable allows foregoing to add index metadata (at the end of * file). * * * Example pipelines * |[ * gst-launch-1.0 gst-launch-1.0 v4l2src num-buffers=50 ! queue ! x264enc ! mp4mux ! filesink location=video.mp4 * ]| * Records a video stream captured from a v4l2 device, encodes it into H.264 * and muxes it into an mp4 file. * * * Documentation last reviewed on 2011-04-21 */ /* ============================= 3gppmux ==================================== */ /** * SECTION:element-3gppmux * @short_description: Muxer for 3GPP (.3gp) files * * This element merges streams (audio and video) into 3GPP (.3gp) files. * * The following background intends to explain why various similar muxers * are present in this plugin. * * The * QuickTime file format specification 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 (3gppmux). * The fragmented file features defined (only) in ISO Base Media are used by * ISMV files making up (a.o.) Smooth Streaming (ismlmux). * * A few properties (#Gst3GPPMux:movie-timescale, #Gst3GPPMux:trak-timescale) * allow adjusting some technical parameters, which might be useful in (rare) * cases to resolve compatibility issues in some situations. * * 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 * #Gst3GPPMux: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 #Gst3GPPMux:fragment-duration. If such * fragmented layout is intended for streaming purposes, then * #Gst3GPPMux:streamable allows foregoing to add index metadata (at the end of * file). * * * Example pipelines * |[ * gst-launch-1.0 v4l2src num-buffers=50 ! queue ! ffenc_h263 ! 3gppmux ! filesink location=video.3gp * ]| * Records a video stream captured from a v4l2 device, encodes it into H.263 * and muxes it into an 3gp file. * * * Documentation last reviewed on 2011-04-21 */ /* ============================= mj2pmux ==================================== */ /** * SECTION:element-mj2mux * @short_description: Muxer for Motion JPEG-2000 (.mj2) files * * This element merges streams (audio and video) into MJ2 (.mj2) files. * * The following background intends to explain why various similar muxers * are present in this plugin. * * The * QuickTime file format specification 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 (3gppmux). * The fragmented file features defined (only) in ISO Base Media are used by * ISMV files making up (a.o.) Smooth Streaming (ismlmux). * * A few properties (#GstMJ2Mux:movie-timescale, #GstMJ2Mux:trak-timescale) * allow adjusting some technical parameters, which might be useful in (rare) * cases to resolve compatibility issues in some situations. * * 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 * #GstMJ2Mux: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 #GstMJ2Mux:fragment-duration. If such * fragmented layout is intended for streaming purposes, then * #GstMJ2Mux:streamable allows foregoing to add index metadata (at the end of * file). * * * Example pipelines * |[ * gst-launch-1.0 v4l2src num-buffers=50 ! queue ! jp2kenc ! mj2mux ! filesink location=video.mj2 * ]| * Records a video stream captured from a v4l2 device, encodes it into JPEG-2000 * and muxes it into an mj2 file. * * * Documentation last reviewed on 2011-04-21 */ /* ============================= ismlmux ==================================== */ /** * SECTION:element-ismlmux * @short_description: Muxer for ISML smooth streaming (.isml) files * * This element merges streams (audio and video) into MJ2 (.mj2) files. * * The following background intends to explain why various similar muxers * are present in this plugin. * * The * QuickTime file format specification 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 (3gppmux). * The fragmented file features defined (only) in ISO Base Media are used by * ISMV files making up (a.o.) Smooth Streaming (ismlmux). * * A few properties (#GstISMLMux:movie-timescale, #GstISMLMux:trak-timescale) * allow adjusting some technical parameters, which might be useful in (rare) * cases to resolve compatibility issues in some situations. * * 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 * #GstISMLMux: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 #GstISMLMux:fragment-duration. If such * fragmented layout is intended for streaming purposes, then * #GstISMLMux:streamable allows foregoing to add index metadata (at the end of * file). * * * Example pipelines * |[ * gst-launch-1.0 v4l2src num-buffers=50 ! queue ! jp2kenc ! mj2mux ! filesink location=video.mj2 * ]| * Records a video stream captured from a v4l2 device, encodes it into JPEG-2000 * and muxes it into an mj2 file. * * * Documentation last reviewed on 2011-04-21 */