Since the procedure for obtaining the latest ffmpeg version is not always kept up-to-date and the line numbers will always change, you may have to create that patch first. \ Generally those line numbers are only updated by a developer when a new stable version with worthwhile features is actually included in the Cinelerra build. FFmpeg is constantly changing and many times the git version is not as stable as desired.
+\section{Configuration Features}
+\label{sec:Configuration Features}
+
+A listing of the current configuration features as of January 11, 2020:
+
+\begingroup
+ \fontsize{10pt}{12pt}\selectfont
+\begin{verbatim}
+
+`configure' configures cinelerra 5.1 to adapt to many kinds of systems.
+
+Usage: ./configure [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE. See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+ -h, --help display this help and exit
+ --help=short display options specific to this package
+ --help=recursive display the short help of all the included packages
+ -V, --version display version information and exit
+ -q, --quiet, --silent do not print `checking ...' messages
+ --cache-file=FILE cache test results in FILE [disabled]
+ -C, --config-cache alias for `--cache-file=config.cache'
+ -n, --no-create do not create output files
+ --srcdir=DIR find the sources in DIR [configure dir or `..']
+
+Installation directories:
+ --prefix=PREFIX install architecture-independent files in PREFIX
+ [/usr/local]
+ --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
+ [PREFIX]
+
+By default, `make install' will install all the files in
+`/usr/local/bin', `/usr/local/lib' etc. You can specify
+an installation prefix other than `/usr/local' using `--prefix',
+for instance `--prefix=$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+ --bindir=DIR user executables [EPREFIX/bin]
+ --sbindir=DIR system admin executables [EPREFIX/sbin]
+ --libexecdir=DIR program executables [EPREFIX/libexec]
+ --sysconfdir=DIR read-only single-machine data [PREFIX/etc]
+ --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
+ --localstatedir=DIR modifiable single-machine data [PREFIX/var]
+ --libdir=DIR object code libraries [EPREFIX/lib]
+ --includedir=DIR C header files [PREFIX/include]
+ --oldincludedir=DIR C header files for non-gcc [/usr/include]
+ --datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
+ --datadir=DIR read-only architecture-independent data [DATAROOTDIR]
+ --infodir=DIR info documentation [DATAROOTDIR/info]
+ --localedir=DIR locale-dependent data [DATAROOTDIR/locale]
+ --mandir=DIR man documentation [DATAROOTDIR/man]
+ --docdir=DIR documentation root [DATAROOTDIR/doc/cinelerra]
+ --htmldir=DIR html documentation [DOCDIR]
+ --dvidir=DIR dvi documentation [DOCDIR]
+ --pdfdir=DIR pdf documentation [DOCDIR]
+ --psdir=DIR ps documentation [DOCDIR]
+
+Program names:
+ --program-prefix=PREFIX prepend PREFIX to installed program names
+ --program-suffix=SUFFIX append SUFFIX to installed program names
+ --program-transform-name=PROGRAM run sed PROGRAM on installed program names
+
+Optional Features:
+ --disable-option-checking ignore unrecognized --enable/--with options
+ --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
+ --enable-FEATURE[=ARG] include FEATURE [ARG=yes]
+ --enable-silent-rules less verbose build output (undo: "make V=1")
+ --disable-silent-rules verbose build output (undo: "make V=0")
+ --enable-dependency-tracking
+ do not reject slow dependency extractors
+ --disable-dependency-tracking
+ speeds up one-time build
+ --enable-a52dec build a52dec (yes)
+ --enable-djbfft build djbfft (yes)
+ --enable-audiofile build audiofile (no)
+ --enable-encore build encore (no)
+ --enable-esound build esound (no)
+ --enable-ffmpeg build ffmpeg (yes)
+ --enable-fftw build fftw (auto)
+ --enable-flac build flac (auto)
+ --enable-giflib build giflib (yes)
+ --enable-ilmbase build ilmbase (auto)
+ --enable-lame build lame (auto)
+ --enable-libavc1394 build libavc1394 (auto)
+ --enable-libraw1394 build libraw1394 (auto)
+ --enable-libiec61883 build libiec61883 (auto)
+ --enable-libdv build libdv (auto)
+ --enable-libjpeg build libjpeg (auto)
+ --enable-opus build opus (auto)
+ --enable-openjpeg build openjpeg (auto)
+ --enable-libogg build libogg (auto)
+ --enable-libsndfile build libsndfile (auto)
+ --enable-libtheora build libtheora (auto)
+ --enable-libuuid build libuuid (yes)
+ --enable-libvorbis build libvorbis (auto)
+ --enable-mjpegtools build mjpegtools (yes)
+ --enable-openexr build openexr (auto)
+ --enable-tiff build tiff (auto)
+ --enable-twolame build twolame (auto)
+ --enable-x264 build x264 (auto)
+ --enable-x265 build x265 (auto)
+ --enable-libvpx build libvpx (auto)
+ --enable-lv2 build lv2 (auto)
+ --enable-sratom build sratom (auto)
+ --enable-serd build serd (auto)
+ --enable-sord build sord (auto)
+ --enable-lilv build lilv (auto)
+ --enable-suil build suil (auto)
+ --enable-libaom build libaom (auto)
+ --enable-dav1d build dav1d (auto)
+ --enable-libwebp build libwebp (auto)
+ --enable-ffnvcodec build ffnvcodec (auto)
+ --enable-static-build build static ([auto])
+ --enable-x264_hidepth build x264 10bit ([no])
+ --enable-x265_hidepth build x265 10bit ([no])
+
+Optional Packages:
+ --with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
+ --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
+ --with-jobs parallel build jobs (auto)
+ --with-exec-name binary executable name (cin)
+ --with-single-user to install cin in bin (no)
+ --with-ladspa-build build ladspa library (yes)
+ --with-lv2 lv2 library support (yes)
+ --with-cinlib cinelerra library path (auto)
+ --with-cindat cinelerra share path (auto)
+ --with-plugin-dir plugin install dir (auto)
+ --with-ladspa-dir ladspa install dir (auto)
+ --with-config-dir .bcast config dir ($$HOME/.bcast5)
+ --with-nested-dir nested proxy dir ($$HOME/Videos)
+ --with-browser cin_browser path (firefox)
+ --with-git-ffmpeg git ffmpeg using url (no)
+ --with-noelision use noelision/libpthread (auto)
+ --with-booby window lock trace booby trap (no)
+ --with-libzmpeg build libzmpeg (yes)
+ --with-commercial enable commercial capture (yes)
+ --with-thirdparty use thirdparty build (yes)
+ --with-shuttle shuttle device (yes)
+ --with-wintv usb 2040:826d wintv device (yes)
+ --with-x10tv usb 0bc7:0004 X10 remote device (yes)
+ --with-vaapi video acceleration api (yes)
+ --with-vdpau video decode+presentation api for unix (yes)
+ --with-nv nvenc/nvdec ffnvcodec api (yes)
+ --with-cuda nv cuda plugins (auto)
+ --with-clang use clang instead of gcc/g++ (no)
+ --with-gl use opengl (auto)
+ --with-oss use OSS audio (auto)
+ --with-xft use libXft (auto)
+ --with-alsa use libasound/alsa (auto)
+ --with-firewire use firewire (auto)
+ --with-dv use dv (auto)
+ --with-dvb use dvb (auto)
+ --with-video4linux2 use v4l2 (auto)
+ --with-xxf86vm use xf86vmode (auto)
+ --with-esound use esd (auto)
+ --with-shuttle shuttle dev support (auto)
+ --with-shuttle_usb use libusb-1.0 (auto)
+ --with-lv2 use lv2 (auto)
+ --with-cuda build cuda plugins (auto)
+ --with-dl system has libdl (auto)
+ --with-opencv opencv=sys/sta/dyn,git/tar=url (auto)
+ --with-numa system has libnuma (auto)
+ --with-openexr use openexr (auto)
+
+Some influential environment variables:
+ CC C compiler command
+ CFLAGS C compiler flags
+ LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries in a
+ nonstandard directory <lib dir>
+ LIBS libraries to pass to the linker, e.g. -l<library>
+ CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+ you have headers in a nonstandard directory <include dir>
+ CCAS assembler compiler command (defaults to CC)
+ CCASFLAGS assembler compiler flags (defaults to CFLAGS)
+ CXX C++ compiler command
+ CXXFLAGS C++ compiler flags
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+
+\end{verbatim}
+\endgroup
+
\section{Thirdparty Parallel Build}
\label{sec:Thirdparty Parallel Build}