X-Git-Url: https://git.cinelerra-gg.org/git/?p=goodguy%2Fcin-manual-latex.git;a=blobdiff_plain;f=parts%2FDVD.tex;h=e1d2bff2c84ec70f6aa5c7cd9a681b8ce52affa0;hp=5d38c8d822e16203431f997b2c4cc3f53c6f3311;hb=HEAD;hpb=6bb9bb301c01bcf89083f1c9859724e0125c248a

diff --git a/parts/DVD.tex b/parts/DVD.tex
index 5d38c8d..08c59c5 100644
--- a/parts/DVD.tex
+++ b/parts/DVD.tex
@@ -4,6 +4,8 @@
 \index{BluRay}
 
 This section describes how to create a blu-ray DVD, or \textcolor{red}{BD} referring to a \textcolor{red}{B}lu-ray \textcolor{red}{D}VD, and a regular DVD, or \textcolor{red}{SD} referring to a \textcolor{red}{S}tandard \textcolor{red}{D}VD.  The DVDs (plural usage of DVD means either BD or SD) created are unencrypted, unlike commercially available movie DVDs.  This \CGG{} version conceivably can create different variations of DVD/Blu-ray media but for the casual user the most standard usages are readily usable and will be described here.
+In \CGG{} DVD and Bluray creation is a convenience for users who want to edit and then just make basic media without having to work too hard, therefore
+all features will not be available.
 
 Some preliminary information follows.  For NTSC, SD media is almost always $720\times480$ interlaced (the format in the United States, US).  For PAL, SD media is almost always $720\times576$ interlaced (Europe, EU, and most of the world).  An SD can conceivably be created with a lower resolution – for example $352\times240$ MPEG-1 -- but it is not useful.  Aspect ratio for either NTSC or PAL can be $4:3$ or $16:9$.  
 
@@ -502,6 +504,49 @@ because the upsampling of interlaced chroma fields is normally done using a prog
 With this mode enabled, the MPEG decoder uses a different algorithm for interlaced frames so that the
 4:2:0 format chroma interlacing is preserved.
 
+\section{DVD with LPCM or MP2 audio}%
+\label{sec:dvd_lpcm_audio}
+
+By default, the audio when creating a DVD is always \textit{AC3}. However you can switch to \textit{PCM} (Pulse Code Modulator) or MP2 with just a few additional steps as outlined below.
+Note that Audio must be $48Khz$ or $96Khz$, nothing else is supported, even by ffmpeg's dvd pcm encoder.
+
+\begin{enumerate}
+	\item Start \CGG{} from a terminal window so you will be able to see what is happening. Only the final step when you actually want to write to a
+DVD media writer, requires privileges of either root or the system has
+granted the user this privilege.
+	\item Make sure you have your video with audio loaded and edited to your satisfaction and you are positioned at the start of the video.
+	\item Use the \texttt{File} pulldown and select the \textit{DVD Render} option.
+	\item In the\textit{Create DVD} window, accept the defaults or select different values and then click \texttt{OK}.  Do not check "Use FFMPEG" as that may not work.
+	\item When the \textit{Batch Render} window pops up, in the big box towards the bottom will be 2 lines with the first line for \textit{Video} already highlighted.  Instead, click on the second line, which is for \textit{Audio}, so that it is highlighted.
+	\item On the top left, you will see the \textit{File Format} set as AC3.  Use the down arrow next to	the box and change it to \textit{Raw PCM} or \textit{MPEG Audio} by clicking on it.
+	\item When you switch to Raw PCM or MPEG Audio, you see the extension in the \texttt{Output path} above change to pcm or mp3
+	instead of ac3.  Now just reset the extension from pcm to lpcm or mp2 as that is required. In most cases if you click on the \texttt{Audio} wrench to see the settings, you will find that the standard settings of 16 bit Linear / Signed / Hi Lo work for Raw PCM.  For mp2, you will have to click
+on the Audio wrench and change the default Layer III to Layer II.
+	\item Now click on the \texttt{Start} box in the bottom left hand corner and \CGG{}	will process what it can of the job and put you back at your terminal startup window.
+	\item You will see a few lines of output, some of which are shown below, to include the ERROR:
+	\begin{lstlisting}[style=sh]
+		running /dev/shm//dvd_20240116-182336/dvd.sh
+		INFO: [mplex] mplex version 2.1.0 (2.2.7 $Date: 2012/11/17 01:55:16 $)
+		**ERROR: [mplex] Unable to open file
+		/dev/shm/dvd_20240116-182336/dvd.ac3 for reading.
+	\end{lstlisting}
+	\item Change directory to the location as shown on the terminal window of \texttt{dvd.sh}.
+	\item Using an editor, modify the line in dvd.sh to change \texttt{dvd.ac3} to \texttt{dvd.lpcm} or to \texttt{dvd.mp2} for mp2.  In addition ONLY for Raw PCM you have to change the mplex parameter to include:
+	\begin{lstlisting}[style=sh]
+		-L  48000:2:16
+	\end{lstlisting}
+	The full line will look like this:
+	\begin{lstlisting}[style=sh]
+		mplex -f 8 -L 48000:2:16 -o $dir/dvd.mpg $dir/dvd.m2v $dir/dvd.lpcm
+	\end{lstlisting}
+	\item Now the script is ready to run in the same manner it would have had it been ac3. That is just run via:
+	\begin{lstlisting}[style=sh]
+		./dvd.sh
+	\end{lstlisting}
+	\item Check to make sure there are no errors in the output shown on the window and proceed as usual.
+\end{enumerate}
+
+
 \section{MPEG utility programs}%
 \label{sec:mpeg_utility_programs}