Build ffmpeg as mythffmpeg and install

This will allow nuvexport to standardize on using the snapshotted ffmpeg which
is built against the libmythav* libraries, as is mythtv itself.  This will
get rid of the constant changes in ffmpeg command-line arguments once and for
all.  At every ffmpeg resync, we will need to be sure that this is recreated,
and then that nuvexport uses whatever changed command-line arguments that the
new sync uses.

mythtv/configure

@@ -1955,6 +1955,7 @@ enable avutil
 enable asm
 enable debug
 #enable doc
+enable ffmpeg
 enable fastdiv
 enable gpl
 enable mpegaudio_hp

mythtv/external/.gitignore

@@ -8,3 +8,6 @@ version.h
 config.mak
 config.h
 avconfig.h
+ffmpeg
+ffmpeg_g
+mythffmpeg

mythtv/external/FFmpeg/Makefile

@@ -16,6 +16,7 @@ MANPAGES    = $(addprefix doc/, $(addsuffix .1, $(PROGS-yes)))
 HTMLPAGES   = $(addprefix doc/, $(addsuffix -doc.html, $(PROGS-yes)))
 TOOLS       = $(addprefix tools/, $(addsuffix $(EXESUF), cws2fws pktdumper probetest qt-faststart trasher))
 HOSTPROGS   = $(addprefix tests/, audiogen videogen rotozoom tiny_psnr base64)
+MYTHPROGS   = $(addprefix myth, ${PROGS})
 
 BASENAMES   = ffmpeg ffplay ffprobe ffserver
 ALLPROGS    = $(addsuffix   $(EXESUF), $(BASENAMES))
@@ -46,7 +47,8 @@ FF_DEP_LIBS  := $(DEP_LIBS)
 ALL_TARGETS-$(CONFIG_DOC)       += documentation
 
 ifdef PROGS
-INSTALL_TARGETS-yes             += install-progs install-data
+INSTALL_TARGETS-yes             += install-mythprogs
+#INSTALL_TARGETS-yes             += install-progs install-data
 INSTALL_TARGETS-$(CONFIG_DOC)   += install-man
 endif
 INSTALL_PROGS_TARGETS-$(CONFIG_SHARED) = install-libs
@@ -57,6 +59,9 @@ $(PROGS): %$(EXESUF): %_g$(EXESUF)
 	$(CP) $< $@
 	$(STRIP) $@
 
+${MYTHPROGS}: myth%: %
+	$(CP) $< $@
+
 config.h: .config
 .config: $(wildcard $(FFLIBS:%=$(SRC_DIR)/lib%/all*.c))
 	@-tput bold 2>/dev/null
@@ -137,6 +142,10 @@ install-progs: $(PROGS) $(INSTALL_PROGS_TARGETS-yes)
 	$(Q)mkdir -p "$(BINDIR)"
 	$(INSTALL) -c -m 755 $(PROGS) "$(BINDIR)"
 
+install-mythprogs: $(MYTHPROGS) $(INSTALL_PROGS_TARGETS-yes)
+	$(Q)mkdir -p "$(BINDIR)"
+	$(INSTALL) -c -m 755 $(MYTHPROGS) "$(BINDIR)"
+
 install-data: $(DATA_FILES)
 	$(Q)mkdir -p "$(DATADIR)"
 	$(INSTALL) -m 644 $(DATA_FILES) "$(DATADIR)"