<itemizedlist>
<listitem>Creation of <ulink
url="http://en.wikipedia.org/wiki/Digital_Cinema_Package">Digital
- Cinema Packages</ulink> (DCPs) from video, audio and/or
- subtitle and closed caption files.</listitem>
+ Cinema Packages</ulink> (DCPs) from video, audio, subtitle and closed-caption files.</listitem>
<listitem>Playback and verification of DCPs on a PC/Mac.</listitem>
<listitem>Creation of KDMs for DCPs.</listitem>
</itemizedlist>
more complex or less-used controls are hidden from view in
‘Simple’ mode. This makes the interface simpler to
navigate. You may wish to choose this mode if you do not have much
-experience with video processing.
+experience with DCP or video processing.
</para>
<para>Even if you choose ‘Simple’ mode you can always go
used to name the folder to store its data in, and also as the initial
name for the DCP itself. You can also choose whereabouts you want to create
the film. In the example from the figure, DCP-o-matic will create a
-folder called ‘DCP Test’ inside my home folder (carl) into which it
+folder called ‘DCP Test’ inside my existing folder <code>DCP</code> into which it
will write its working files.
</para>
<para>
The next step is to add the content that you want to use. DCP-o-matic
-can make DCPs from multiple pieces of content, but in this simple
-example we will just use a single piece. Click the <guilabel>Add
+can make DCPs from multiple pieces of content, but in this example we
+will use a single piece. Click the <guilabel>Add
file(s)...</guilabel> button, as shown in <xref
linkend="fig-add-file"/>, and a file chooser will open for you to
select the content file to use, as shown in <xref
</para>
<para>
-Alternatively, if you have a projector or Theatre Management System
-(TMS) that is accessible via SCP or FTP across your network, you can upload
-the content directly from DCP-o-matic. See the <xref
-linkend="sec-prefs-tms" endterm="sec-prefs-tms-short"/> in <xref linkend="sec-prefs-tms"/>.
+Alternatively, DCP-o-matic can upload your DCP directly to a projector
+or Theatre Management System (TMS) that is accessible via SCP or FTP
+across your network. See the <xref linkend="sec-prefs-tms"
+endterm="sec-prefs-tms-short"/> in <xref linkend="sec-prefs-tms"/>.
</para>
</section>
Most of the default settings will be fine for a simple test. The one
thing that you might wish to change is the length of the still.
Select the <guilabel>Timing</guilabel> tab and you will see a
-<guilabel>Play length</guilabel> setting, as shown in <xref
+<guilabel>Full length</guilabel> setting, as shown in <xref
linkend="fig-timing-tab"/>.
</para>
<para>
The content properties are split up into four sections:
<guilabel>Video</guilabel>, <guilabel>Audio</guilabel>,
-<guilabel>Subtitles</guilabel> and <guilabel>Timing</guilabel>. Not
+<guilabel>Timed text</guilabel> and <guilabel>Timing</guilabel>. Not
all of these sections will be active for all content types. The controls
in each section are described below.
</para>
After changing the filters setup, you will need to regenerate the DCP
to see the effect on the cinema screen. The preview in DCP-o-matic
will update itself whenever filters are changed, though of course this
-image is much smaller and of lower resolution than a projected image!
+image may be smaller and of lower resolution than a projected image!
</para>
</section>
At the bottom of the video tab is a short description of what will
happen to your video with the current settings. In the example of
<xref linkend="fig-video-tab"/>, DCP-o-matic is telling you that the
-video file is 1920x1080 pixels and it has square pixels (a pixel
-aspect ratio of 1.00) hence its display aspect ratio is 1.78:1. Since
-the controls specify ‘16.9’ for the ratio, DCP-o-matic
+video file is 2048x872 pixels and it has square pixels (a pixel
+aspect ratio of 1.00) hence its display aspect ratio is 2.35:1. Since
+the controls specify ‘2.35’ for the ratio, DCP-o-matic
does not scale the image but pads it to the DCP's container ratio of
1.85:1. For a 2K DCP this is 1998x1080 pixels.
</para>
<title>Audio</title>
<para>
-The <guilabel>Audio</guilabel> tab controls properties of the image, as shown in <xref linkend="fig-audio-tab"/>.
+The <guilabel>Audio</guilabel> tab controls properties of the sound, as shown in <xref linkend="fig-audio-tab"/>.
</para>
<figure id="fig-audio-tab">
<para>
Depending on where timed text comes from it can sometimes be used as
-either an open subtitle (to be overlaid onto the cinema screen and so
+either an open subtitle (to be overlaid onto the cinema screen and
seen by everybody) or as a closed caption (to be displayed to
individual viewers using a special system such as the Doremi
CaptiView™)
<para>
With any subtitles you can click <guilabel>Appearance...</guilabel> to
change how the subtitles look. Some of the controls in the
-<guilabel>Apperance</guilabel> only apply to burnt-in subtitles, as
+<guilabel>Appearance</guilabel> only apply to burnt-in subtitles, as
only limited control is available for subtitles rendered by the
projection system.
</para>
</section>
+<!-- ============================================================== -->
+<section>
+ <title>Timeline</title>
+
+ <para>
+ The timeline window gives an overview of all the pieces of content
+ in your film, and how they are arranged. You can open the
+ timeline by clicking the <guilabel>Timeline...</guilabel> button
+ next to the content list. This will open a window like the one in <xref linkend="fig-timeline1"/>.
+ </para>
+
+ <figure id="fig-timeline1">
+ <title>Timeline</title>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="screenshots/timeline1&scs;"/>
+ </imageobject>
+ </mediaobject>
+ </figure>
+
+ <para>
+ The horizontal axis represents time, and you can see the time codes (in
+ hours:minutes:seconds) along the bottom of the window. Pieces of
+ content are represented with rectangles in the main part of the
+ window. Content containing different types of data (e.g. a MP4
+ file with video, audio and subtitles) have a rectangle for each
+ type.
+ </para>
+
+ <para>
+ Within the timeline you can select content by clicking, and drag
+ it to change its position. Right-clicking a piece of content will
+ open the content menu.
+ </para>
+
+ <para>
+ The toolbar at the top of the window offers the following tools:
+ </para>
+
+ <itemizedlist>
+ <listitem>Select — to select and move content.</listitem>
+ <listitem>Zoom in — to drag out an area that you want to see more closely.</listitem>
+ <listitem>Zoom out — to zoom out so that the window shows the whole film.</listitem>
+ <listitem>Snap — when enabled, content will snap to other content when you drag it close.</listitem>
+ <listitem>Sequence — when enabled, content will be kept in sequence, without gaps, even if some content is removed.</listitem>
+ </itemizedlist>
+</section>
+
<!-- ============================================================== -->
<section>
<title>Video processing pipeline</title>
<para>
The next step is to scale the image. Since this content should be
-presented in a 2.39:1 aspect ratio inside a 1.85:1 DCP we would select
+presented in a 2.39:1 (scope) aspect ratio inside a 1.85:1 (flat) DCP we would select
<guilabel>Scope</guilabel> from the <guilabel>Scale to</guilabel>
option in the <guilabel>Video</guilabel> tab and
<guilabel>Flat</guilabel> from the <guilabel>Container</guilabel>
<para>
The <guilabel>Reels</guilabel> and <guilabel>Reel length</guilabel>
controls specify how the DCP will be split up into
-‘reels’. See <xref linkend="sec-reels"/> below.
+‘reels’. See <xref linkend="sec-reels"/>.
</para>
<para>
Most commercial DCPs use bit rates between 75 and 125 Mbit/s.
</para>
+<para>
+<guilabel>Re-encode JPEG2000 data from input</guilabel> governs
+whether or not JPEG2000-encoded data from a piece of content (usually
+a DCP) will be re-used in the output data as-is or whether it will be
+decoded and re-encoded by DCP-o-matic. If the option is enabled
+DCP-o-matic will decompress any JPEG2000 data it finds and re-encode
+it. This is useful if you want to reduce the bitrate of a DCP.
+Usually you will achieve better quality and quicker results by leaving
+this option switched off.
+</para>
+
<para>
The <guilabel>Audio Channels</guilabel> control sets the number of
audio channels that the DCP will have. If the DCP has any channels
</listitem>
</itemizedlist>
+The up-mixers are not particularly advanced and should be used with care. You are strongly advised to check how the DCPs sound in a cinema if you have used one of DCP-o-matic's upmixers.
+
<!-- ============================================================== -->
<section xml:id="sec-reels">
<title>Reels</title>
<para>
A ‘reel’ in a DCP is a subsection of the DCP, in the same
way as a 35mm reel is a section of a film. A DCP can be split up into
-any number of reels and the joins (the equivalent to 35mm splices)
+any number of reels and the joins (the equivalent to 35mm splices or changeovers)
between the reels are seamless.
</para>
<para>
There is no reason why you can't just use a single reel for the whole
-of your DCP, as there is no limit on their length. Many people choose
+of your DCP, as there is no limit to their length. Many people choose
to do this.
</para>
for example, a film company who wants to put a 5 second ident onto the
beginning of DCPs that they distribute. If they receive a feature
film DCP they can modify it to add their ident as a separate reel.
-This is easier than attaching the picture data in the DCP.
+This is easier than attaching the picture data to the feature's existing data.
</listitem>
</itemizedlist>
<para>
DCP-o-matic offers three options for setting up the reels in your DCP:
-single reel, split by video content or custom.
+<guilabel>single reel</guilabel>, <guilabel>split by video content</guilabel> or <guilabel>custom</guilabel>.
</para>
<para>
</para>
<para>
-For example if the template has a piece of video content and some
+For example, if the template has a piece of video content and some
subtitles, any video that you add to the new film will take on the
settings of the video in the template. Similarly, any subtitles that
you add will take on the settings of the subtitles from the template.
<title>Encryption</title>
<para>
-It is not required that DCPs be encrypted, but they can be. This
+DCP's do not have to be encrypted, but they can be. This
chapter discusses the basic principles of DCP encryption, and how
DCP-o-matic can create encrypted DCPs and KDMs for them.
</para>
DCPs can be encrypted. This means that the picture and sound data are
encoded in such a way that only cinemas ‘approved’ by the
DCP's creators can read them. In particular, this means copies of the
-DCP can be distributed by insecure means: if an ne'er-do-well called
+DCP can be distributed by insecure means: if a bad person called
Mallory obtains a hard drive containing an encrypted DCP, there is no
way that he can play it. Only those cinemas who receive a correct key
delivery message (KDM) can play the DCP.
</para>
<para>
-The first step in a DCP encryption is to encode its data with some key
+The first step in a DCP encryption is to encode its data with a random key
using symmetric-key encryption. The encrypted DCP can then be sent
anywhere, safe in the knowledge that even if Mallory got hold of a
copy, he could not decrypt it.
<para>
Alternatively, certificates for projection systems made by some
manufacturers can be downloaded from databases provided by the
-manufacturer. Currently this is supported for Doremi and Dolby
-equipment. If you are targeting a screen with equipment by one of
-these manufacturers you can click <guilabel>Download</guilabel> then
-enter the serial number of the server in the screen and click
-<guilabel>Download</guilabel> again and, all being well, the certificate
-will be fetched.
-</para>
-
-<para>
-Using the download system you will need to know the serial number of
-the media server in use in the screen. Most cinema projection or
-technical departments will know these serial numbers.
+manufacturer. Currently this is supported for Doremi, Dolby, Barco,
+Christie and GDC equipment (through downloading Barco, Christie or GDC
+certificates requires you to have an appropriate account set up in
+DCP-o-matic's preferences). If you are targeting a screen with
+equipment by one of these manufacturers you can click
+<guilabel>Download</guilabel> then enter the serial number of the
+server in the screen and click <guilabel>Download</guilabel> again
+and, all being well, the certificate will be fetched. Most cinema
+projection or technical departments will know these serial numbers.
</para>
<para>
have a backup of DCP-o-matic's <code>config.xml</code> file, since it
contains the only key which can decrypt the DKDM. The
<code>config.xml</code> file location depends on your operating
-system; possible locations are listed in <xref linkend="ch-config"/>
+system; possible locations are listed in <xref linkend="ch-config"/>.
</para>
</section>
+<section>
+ <title>Should I encrypt?</title>
+
+ <para>
+ The question of whether encryption is appropriate for a given
+ project is a tricky one.
+ </para>
+
+ <para>
+ On the one hand, if you distribute an unencrypted DCP it is easy for
+ anybody to take it and do whatever they want with its contents.
+ They could use DCP-o-matic to convert it to a MP4, show it in
+ their cinema, or even edit and redistribute it in ways that you
+ do not like.
+ </para>
+
+ <para>
+ Encryption prevents this, but brings its own problems. It will be
+ impossible for a cinema to screen your DCP unless they have the
+ correct KDM. This is easy enough if things work as they should,
+ but problems can occur. For example, cinemas may substitute
+ broken playout servers with new ones without telling you: then the
+ KDM that you sent them will be invalid, and a new one required.
+ If the cinema can't get in touch with you, or somebody else who
+ can create a new KDM, they can't screen your DCP. Often these
+ problems are only discovered very close to showtime, with little
+ time for fixes.
+ </para>
+
+ <para>
+ If you are distributing encrypted DCPs widely it is worth thinking
+ about who will make the KDMs, and who will provide quick-response
+ technical support. It may be a good idea to engage a company who can
+ provide such services.
+ </para>
+
+</section>
+
+
<section>
<title>Encryption overview</title>
<para>
Preferences can be edited by choosing
<guilabel>Preferences...</guilabel> from the <guilabel>Edit</guilabel>
-menu. This opens a dialogue which is split into seven tabs.
+menu. This opens a dialogue which is split into eleven tabs.
</para>
<!-- ============================================================== -->
The translations for DCP-o-matic have been contributed by helpful
users. If your language is not on the last, head to <ulink
url="http://dcpomatic.com/i18n.php">the DCP-o-matic website</ulink> to
-read about how to contribute a translation.
+find out how to contribute a translation.
</para>
</section>
+<!-- ============================================================== -->
+<section>
+ <title>Interface complexity</title>
+
+ <para>
+ Choose <guilabel>Simple</guilabel> to see a cut-down, simplified
+ interface or <guilabel>Full</guilabel> to see DCP-o-matic's full
+ interface.
+ </para>
+</section>
+
+
<!-- ============================================================== -->
<section>
<title>Number of threads DCP-o-matic should use</title>
url="http://dcpomatic.com/">dcpomatic.com</ulink> to see if there any
newer versions of DCP-o-matic then the one you are running. If so, a
dialogue box will open with a link to download the new version.
-available
</para>
<para>
you and asks for your certificate.
</para>
-<para>
-<guilabel>Export KDM decryption chain...</guilabel> exports the whole
-KDM decryption chain rather than just its certificate. This may also
-be requested by KDM creators.
-</para>
-
<para>
<guilabel>Export all KDM decryption settings...</guilabel> exports a
file which contains all the DCP-o-matic settings related to the use of
<para>
If you want DCP-o-matic to re-create the certificate chain (using new,
random certificates) click <guilabel>Re-make
-certificates...</guilabel> and specify your organisation and common
+certificates and key...</guilabel> and specify your organisation and common
names in the dialogue box that opens.
</para>
<para>
Underneath the certificate chain is the private key that corresponds
to the leaf certificate in the chain. You can specify your own
-private key by clicking <guilabel>Load...</guilabel>. You must do
+private key by clicking <guilabel>Import...</guilabel>. You must do
this if you change the leaf certificate, so that the leaf private key
corresponds to the public key held in the leaf certificate.
</para>
be used when targeting a KDM at DCP-o-matic.
</para>
-
-<para>
-If you want to import an encrypted DCP you will need to give the
-decryption certificate to the distributor of the DCP so that they can
-generate a DKDM for you. You can save this certificate to disk by
-clicking <guilabel>Export DCP decryption certificate...</guilabel>.
-As with the signing chain, DCP-o-matic will create a certificate chain
-and private key for you. You can also choose to load your own
-certificates and key or re-make the chain and key with new, random
-values.
-</para>
-
<para>
-Clicking <guilabel>Export DCP decryption chain...</guilabel> will
-export the whole certificate chain, rather than just the leaf
-certificate.
+Clicking <guilabel>Export chain...</guilabel> will
+export the whole certificate chain.
</para>
</section>
This is a template for the email that is used to send KDMs out to
cinemas. You can change it to say whatever you like. A few
‘magic’ strings will be replaced by information from the
-KDM that is being sent:
+KDM that is being sent; these strings are shown in <xref linkend="tab-kdm-magic"/>.
</para>
-<table>
+<table id="tab-kdm-magic">
<title>‘Magic’ KDM strings</title>
<tgroup cols='2' align='left' colsep='1' rowsep='1'>
<tbody>
</figure>
<para>
-DCP-o-matic can download projector certificates from the Barco and
-Christie websites if you have the appropriate credentials. Enter your
-usernames and passwords.
+DCP-o-matic can download projector certificates from the Barco,
+Christie and GDC websites if you have the appropriate credentials.
+Enter your usernames and passwords.
</para>
</section>
</para>
<table>
-<title>‘Magic’ Cover sheet strings</title>
+<title>‘Magic’ cover sheet strings</title>
<tgroup cols='2' align='left' colsep='1' rowsep='1'>
<tbody>
<row>
There are some limitations to video and audio frame rates in DCPs. This is
complicated by the fact that not all projectors will play DCPs at the
same frame rates. It is possible to create a DCP which one projector will
-play fine, but another (of a different type) will refuse to play, or
-even refuse to ingest.
+play fine, but another (of a different type) will refuse to play.
</para>
<title>Guaranteed rates</title>
<para>
-The only rates that are (pretty much) guaranteed to work on all DCI
-projectors are 24 frames per second (fps) for video and 48kHz for
-audio. If you are sending DCPs to unknown places it is wise to
-consider using these rates if at all possible.
+The only rates that are guaranteed to work on all DCI projectors are
+24 frames per second (fps) for video and 48kHz for audio. If you are
+sending DCPs to unknown places it is wise to consider using these
+rates if at all possible.
</para>
</section>
<itemizedlist>
<listitem>Start a new DCP-o-matic film.</listitem>
-<listitem>Click <guilabel>Add folder...</guilabel> and specify your existing DCP's folder.</listitem>
+<listitem>Click <guilabel>Add DCP...</guilabel> and specify your existing DCP's folder.</listitem>
<listitem>Go to the <guilabel>DCP</guilabel> tab and choose <guilabel>Split by video content</guilabel> for <guilabel>Reel type</guilabel>.</listitem>
<listitem>Go to the <guilabel>Video</guilabel> and
<guilabel>Audio</guilabel> tabs in turn and tick the <guilabel>Use this DCP's audio as OV and make VF</guilabel> checkboxes.</listitem>
<itemizedlist>
<listitem>Start a new DCP-o-matic film.</listitem>
-<listitem>Click <guilabel>Add folder...</guilabel> and specify your existing DCP's folder.</listitem>
+<listitem>Click <guilabel>Add DCP...</guilabel> and specify your existing DCP's folder.</listitem>
<listitem>Add your subtitles to the film in whatever format you have.</listitem>
<listitem>Check the subtitle appearance in the preview; it will be
slow to respond as it is having to decompress images from the existing
<itemizedlist>
<listitem>Start a new DCP-o-matic film.</listitem>
-<listitem>Click <guilabel>Add folder...</guilabel> and specify your existing DCP's folder.</listitem>
+<listitem>Click <guilabel>Add DCP...</guilabel> and specify your existing DCP's folder.</listitem>
<listitem>Add your subtitles to the film in whatever format you have.</listitem>
<listitem>Go to the <guilabel>Subtitle</guilabel> tab and tick the <guilabel>Burn subtitles into image</guilabel> checkbox.</listitem>
<listitem>Check the subtitle appearance in the preview; it will be
</chapter>
<chapter xml:id="ch-player" xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en">
- <title>Playing DCPs</title>
+ <title>Playing and verifying DCPs</title>
<para>DCP-o-matic includes a DCP player, and although it requires a
very high-speed CPU to play DCPs in full resolution, it can also
resolution.
</para>
+ <para>
+ The player also offers a simple DCP validator. To check a DCP,
+ open it and then select <guilabel>Verify DCP</guilabel> from the
+ <guilabel>Tools</guilabel> menu. This will run some basic checks to see if the DCP meets the required standards.
+ </para>
+
</chapter>
<!-- ============================================================== -->
</chapter>
</book>
+
+<!-- LocalWords: dbcent DCP matic Hetherington DCPs KDMs GPL XP sid
+-->
+<!-- LocalWords: matic's jessie Tahr Xenial Xerus Centos Mageia GTK
+-->
+<!-- LocalWords: Karner FFmpeg libsndfile libsamplerate OpenSSL waf
+-->
+<!-- LocalWords: libopenjpeg libssh wxWidgets libxml xmlsec libzip
+-->
+<!-- LocalWords: asdcplib libdcp libsub libcxml sstream sudo Sintel
+-->
+<!-- LocalWords: dcpomatic TMS SCP timecode DCP's unencrypted OV Gb
+-->
+<!-- LocalWords: Decrypting KDM decrypt decrypted MOV VOB WAV AIFF
+-->
+<!-- LocalWords: PNG srt ssa xml wav Lfe XYZ colourspace sRGB RGB
+-->
+<!-- LocalWords: colourspaces pdf fader CP Doremi CaptiView SubRip
+-->
+<!-- LocalWords: SubStation BluRay
+-->
projects / dcpomatic.git / blobdiff