
Recherche avancée
Médias (1)
-
Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (88)
-
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
-
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
Sur d’autres sites (8014)
-
How to configure FFMPEG to generate position independent code on IOS
8 juillet 2013, par madadiI am developing an app on iOS which makes use of FFMPEG for video decoding. I want to get 'position independent code' of FFMPEG working on my app.
--enable-pic
option in the FFMPEG configuration generates position independent code only if I set--disable-asm
. I concluded this when I ran the otool on my app(otool -hv 'appname'
). Below are the details :If I set
--enable-pic
alone, below is the output with otool :magic cputype cpusubtype caps filetype ncmds sizeofcmds flags
MH_MAGIC ARM V7 0x00 EXECUTE 29 3724 NOUNDEFS DYLDLINK TWOLEVEL WEAK_DEFINES BINDS_TO_WEAKIf I set
--enable-pic
and--disable-asm
below is the output with otool,magic cputype cpusubtype caps filetype ncmds sizeofcmds flags
MH_MAGIC ARM V7 0x00 EXECUTE 51 5520 NOUNDEFS DYLDLINK TWOLEVEL WEAK_DEFINES BINDS_TO_WEAK **PIE**Below are my configuration settings for FFMPEG(build-ffmpeg-ios.sh) :
if [ `uname` = "Darwin" ]; then
SEDCMD="sed -i '' "
else
SEDCMD="sed -i "
fi
make clean
./configure \
--prefix=$PREFIX \
--enable-version3 \
--enable-static \
--disable-shared \
--disable-doc \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--disable-avdevice \
--disable-avfilter \
--disable-postproc \
--enable-small \
--cross-prefix="$DEVROOT/usr/bin/" \
--enable-cross-compile \
--target-os=darwin \
--arch=$ARCH \
--cpu=$CPU \
--cc="$CC" \
--as="$AS" \
--extra-cflags="$CFLAGS" \
--extra-ldflags="$CFLAGS" \
--disable-symver \
--disable-debug \
--disable-indevs \
--disable-encoders \
--disable-bsfs \
--enable-pic \
--disable-filters \
$CONFIGURE_FLAGS || exit 1;
$SEDCMD 's/HAVE_INLINE_ASM 1/HAVE_INLINE_ASM 0/g' config.h
make install || exit 1;And below is the make file I use(iOS.mk) :
FFMPEG_LIBS := libavcodec.a libavformat.a libavutil.a libswscale.a
IOS_ARMV7_FFMPEG_LIB := $(addprefix build/ios/armv7/lib/, $(FFMPEG_LIBS))
IOS_UNI_FFMPEG_LIB := $(addprefix build/ios/universal/lib/, $(FFMPEG_LIBS))
IPHONE_SDK_VERSION := "5.0"
IPHONE_DEPLOY_SDK := "3.2"
ALL_IOS_LIBS := $(IOS_UNI_FFMPEG_LIB)
build/ios/universal/lib/%.a : build/ios/armv7/lib/%.a
mkdir -p build/ios/universal/lib
lipo -create -output $@ $^
$(IOS_ARMV7_FFMPEG_LIB):
export PREFIX="`$(ABSPATH) build/ios/armv7`" && \
export ARCH="arm" && \
export CPU="cortex-a8" && \
export IOS_BASE_SDK="$(IPHONE_SDK_VERSION)" && \
export IOS_DEPLOY_TGT="$(IPHONE_DEPLOY_SDK)" && \
export CONFIGURE_FLAGS="--enable-neon" && \
export PATH="`$(ABSPATH) venders`:$$PATH" && \
cd venders/ffmpeg && bash ../iphone-compile.sh arm7 ../build-ffmpeg-ios.shCan someone please help me with getting the FFMPEG up and running with both 'pic' and assembly optimization enabled. Without assembly optimizastion, FFMPEG would not be helpful to me as the video decoding is extremely slow.
-
Revision 6989 : On continue le nettoyage du code le but étant de réduire la taille du ...
10 octobre 2012, par kent1 — LogOn continue le nettoyage du code le but étant de réduire la taille du code et de simplifier l’ensemble
Passage en version 1.1.2 de la librairie. -
Looking for a solution to my ffmpeg video overlay code :
16 mars 2018, par Michael HovanLooking for a solution to my ffmpeg video overlay code :
import subprocess as sp
cmd='ffmpeg', '-i', 'C:/Users/Michael.hovan/Desktop/test/front.mov', '-i', 'C:/Users/Michael.hovan/Desktop/test/persp.mov', '-i', 'C:/Users/Michael.hovan/Desktop/test/side.mov', '-i', 'C:/Users/Michael.hovan/Desktop/test/top.mov', '-filter_complex' \
'[1:v]scale=iw/4:-1:flags=lanczos[pip1];' \
'[2:v]scale=iw/4:-1:flags=lanczos[pip2];' \
'[3:v]scale=iw/4:-1:flags=lanczos[pip3];' \
'[0:v][pip1]overlay=main_w-overlay_w-10:main_h-overlay_h-10[bg1];' \
'[bg1][pip2]overlay=(main_w-overlay_w)/2:main_h-overlay_h-10[bg2];' \
'[bg2][pip3]overlay=10:main_h-overlay_h-10,format=yuv420p[v];' \
'[0:a][1:a][2:a][3:a]amerge=inputs=4[a]' \
'-map', '[v]', '-map', '[a]', '-ac', '1', 'C:/Users/Michael.hovan/Desktop/test/output.avi'
sp.call(cmd)I’m honestly stumped as to why the code is giving me a "returned non zero exit status".