mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 10:41:04 +00:00
300 lines
16 KiB
C
300 lines
16 KiB
C
/* Quicktime muxer documentation
|
|
* Copyright (C) 2008-2010 Thiago Santos <thiagoss@embedded.ufcg.edu.br>
|
|
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.net>
|
|
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
|
|
* Contact: Stefan Kost <stefan.kost@nokia.com>
|
|
*
|
|
* 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 <ulink url="http://www.apple.com/quicktime/resources/qtfileformat.pdf">
|
|
* QuickTime file format specification</ulink> 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 (<link linkend="GstMP4Mux--movie-timescale">movie-timescale</link>,
|
|
* <link linkend="GstMP4Mux--trak-timescale">trak-timescale</link>) 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 <link linkend="GstMP4Mux--faststart">faststart</link> 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 <link linkend="GstMP4Mux--fragment-duration">fragment-duration</link>.
|
|
* If such fragmented layout is intended for streaming purposes, then
|
|
* <link linkend="GstMP4Mux--streamable">streamable</link> allows foregoing to add
|
|
* index metadata (at the end of file).
|
|
*
|
|
* <link linkend="GstMP4Mux--dts-method">dts-method</link> 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
|
|
* <link linkend="GstMP4Mux--presentation-timestamp">presentation-timestamp</link>.
|
|
*
|
|
* <refsect2>
|
|
* <title>Example pipelines</title>
|
|
* |[
|
|
* 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.
|
|
* </refsect2>
|
|
*
|
|
* 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 <ulink url="http://www.apple.com/quicktime/resources/qtfileformat.pdf">
|
|
* QuickTime file format specification</ulink> 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 (<link linkend="Gst3GPPMux--movie-timescale">movie-timescale</link>,
|
|
* <link linkend="Gst3GPPMux--trak-timescale">trak-timescale</link>) 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 <link linkend="Gst3GPPMux--faststart">faststart</link> 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 <link linkend="Gst3GPPMux--fragment-duration">fragment-duration</link>.
|
|
* If such fragmented layout is intended for streaming purposes, then
|
|
* <link linkend="Gst3GPPMux--streamable">streamable</link> allows foregoing to add
|
|
* index metadata (at the end of file).
|
|
*
|
|
* <link linkend="Gst3GPPMux--dts-method">dts-method</link> 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
|
|
* <link linkend="Gst3GPPMux--presentation-timestamp">presentation-timestamp</link>.
|
|
*
|
|
* <refsect2>
|
|
* <title>Example pipelines</title>
|
|
* |[
|
|
* 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.
|
|
* </refsect2>
|
|
*
|
|
* 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 <ulink url="http://www.apple.com/quicktime/resources/qtfileformat.pdf">
|
|
* QuickTime file format specification</ulink> 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 (<link linkend="GstMJ2Mux--movie-timescale">movie-timescale</link>,
|
|
* <link linkend="GstMJ2Mux--trak-timescale">trak-timescale</link>) 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 <link linkend="GstMJ2Mux--faststart">faststart</link> 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 <link linkend="GstMJ2Mux--fragment-duration">fragment-duration</link>.
|
|
* If such fragmented layout is intended for streaming purposes, then
|
|
* <link linkend="GstMJ2Mux--streamable">streamable</link> allows foregoing to add
|
|
* index metadata (at the end of file).
|
|
*
|
|
* <link linkend="GstMJ2Mux--dts-method">dts-method</link> 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
|
|
* <link linkend="GstMJ2Mux--presentation-timestamp">presentation-timestamp</link>.
|
|
*
|
|
* <refsect2>
|
|
* <title>Example pipelines</title>
|
|
* |[
|
|
* 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.
|
|
* </refsect2>
|
|
*
|
|
* 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 <ulink url="http://www.apple.com/quicktime/resources/qtfileformat.pdf">
|
|
* QuickTime file format specification</ulink> 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 (<link linkend="GstISMLMux--movie-timescale">movie-timescale</link>,
|
|
* <link linkend="GstISMLMux--trak-timescale">trak-timescale</link>) 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 <link linkend="GstISMLMux--faststart">faststart</link> 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 <link linkend="GstISMLMux--fragment-duration">fragment-duration</link>.
|
|
* If such fragmented layout is intended for streaming purposes, then
|
|
* <link linkend="GstISMLMux--streamable">streamable</link> allows foregoing to add
|
|
* index metadata (at the end of file).
|
|
*
|
|
* <link linkend="GstISMLMux--dts-method">dts-method</link> 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
|
|
* <link linkend="GstISMLMux--presentation-timestamp">presentation-timestamp</link>.
|
|
*
|
|
* <refsect2>
|
|
* <title>Example pipelines</title>
|
|
* |[
|
|
* 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.
|
|
* </refsect2>
|
|
*
|
|
* Documentation last reviewed on 2011-04-21
|
|
*/
|