Recherche avancée

Médias (3)

Mot : - Tags -/pdf

Autres articles (35)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

Sur d’autres sites (6409)

  • Undefined Reference - ffmpeg on android ndk

    28 décembre 2012, par Gabriel Simões

    I´ve spent many hours trying to figure out why I still get "undefined reference" when trying to link to ffmpeg.
    I´ve already read most if not all posts and sites about the subject, so I think I´m missing something little here and I hope you can help me.

    What I have :

    I´m using windows 7 + cygwin + crystax r4.
    I´ve compiled FFMPEG using RockPlayer's ffmpeg source plus some modifications I did (only to include / exclude demuxes, decoders, encoders, ...)
    After compiling, I get :

    • a new folder named armv5te, which includes :
    • a folder named "include" with all folders for each libs' .h
    • a folder named "lib" which includes all libs' .a
    • a shared library named libffmpeg.so (checked soname and it is libffmpeg)

    The shared library isn´t also placed on project/lib/armeabi/libffmpeg.so

    After compiling I tried to compile my project and link it. While my .cpp compiles ok, I get many undefined references.

    here is my build script :

    NDK=/cygdrive/c/Gabriel/Desenvolvimento/SDKs/Android/android-ndk-r4-crystax
    
PLATFORM=$NDK/build/platforms/android-8/arch-arm/
    
PREBUILT=$NDK/build/prebuilt/windows/arm-eabi-4.4.0
    

    

    
function build_one
    
{
    

    
./configure --target-os=linux \
    
    --prefix=$PREFIX \
    
    --enable-cross-compile \
    
    --extra-libs="-lgcc" \
    
    --arch=arm \
    
    --cc=$PREBUILT/bin/arm-eabi-gcc \
    
    --cross-prefix=$PREBUILT/bin/arm-eabi- \
    
    --nm=$PREBUILT/bin/arm-eabi-nm \
    
    --sysroot=$PLATFORM \
    
    --extra-cflags=" -O2 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums  -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
    
    --disable-shared \
    
    --enable-static \
    
    --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -nostdlib -lc -lm -ldl -llog" \
    
    --disable-stripping \
    
    --disable-debug \
    
    --disable-symver \
    
    --disable-ffprobe \
    
    --disable-devices \
    
    --disable-avfilter \
    
    --disable-swscale \
    
    --disable-ffplay \
    
    --disable-ffserver \
    
    --disable-network \
    
        (many more ...)
    
    --enable-asm \
    
    $ADDITIONAL_CONFIGURE_FLAG
    

    
#make clean
    
make  -j4 install
    

    
$PREBUILT/bin/arm-eabi-ar d libavcodec/libavcodec.a inverse.o
    

    
$PREBUILT/bin/arm-eabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a  -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-eabi/4.4.0/libgcc.a
    

    
}
    

    
#arm v5
    
CPU=armv5te
    
OPTIMIZE_CFLAGS="-marm -march=$CPU"
    
PREFIX=./android/$CPU 
    
ADDITIONAL_CONFIGURE_FLAG=
    
build_one

    Here is my android.mk :

    LOCAL_PATH := $(call my-dir)
    

    
#declare the prebuilt library
    
include $(CLEAR_VARS)
    
LOCAL_MODULE := ffmpeg-prebuilt
    
LOCAL_SRC_FILES := $(LOCAL_PATH)/ffmpeg/android/armv5te/libffmpeg.so
    
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/ffmpeg/android/armv5te/include
    
LOCAL_PRELINK_MODULE := true 
    
include $(PREBUILT_SHARED_LIBRARY)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE    := audiocodec
    
LOCAL_SRC_FILES := ffmpeg_audio.cpp
    
LOCAL_SHARED_LIBRARY := libffmpeg
    
LOCAL_C_INCLUDES := $(LOCAL_PATH)/ffmpeg/android/armv5te/include
    
LOCAL_LDLIBS    := -llog -ljnigraphics -lz -lm $(LOCAL_PATH)/ffmpeg/android/armv5te/libffmpeg.so
    
include $(BUILD_SHARED_LIBRARY)

    The result :

    Compile++ thumb: audiocodec <= /cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFM
    
PEG/jni/ffmpeg_audio.cpp
    
SharedLibrary  : libaudiocodec.so
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
    
ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_r
    
eadSamples':
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:172: u
    
ndefined reference to `avcodec_decode_audio3(AVCodecContext*, short*, int*, AVPa
    
cket*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:178: u
    
ndefined reference to `av_read_frame(AVFormatContext*, AVPacket*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
    
ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_s
    
eekToPosMS':
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:147: u
    
ndefined reference to `av_rescale_q(long long, AVRational, AVRational)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:150: u
    
ndefined reference to `av_seek_frame(AVFormatContext*, int, long long, int)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:151: u
    
ndefined reference to `avcodec_flush_buffers(AVCodecContext*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:152: u
    
ndefined reference to `av_read_frame(AVFormatContext*, AVPacket*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
    
ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_c
    
loseFile':
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:82: un
    
defined reference to `avcodec_close(AVCodecContext*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:83: un
    
defined reference to `av_free(void*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:84: un
    
defined reference to `av_close_input_file(AVFormatContext*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
    
ocodec/ffmpeg_audio.o: In function `Java_gabriel_audioslower_pro_ffmpegDecoder_o
    
penAudioFile':
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:37: un
    
defined reference to `av_open_input_file(AVFormatContext**, char const*, AVInput
    
Format*, int, AVFormatParameters*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:44: un
    
defined reference to `av_find_stream_info(AVFormatContext*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:52: un
    
defined reference to `avcodec_find_decoder(CodecID)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:60: un
    
defined reference to `avcodec_open(AVCodecContext*, AVCodec*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:67: un
    
defined reference to `av_malloc(unsigned int)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:70: un
    
defined reference to `av_read_frame(AVFormatContext*, AVPacket*)'
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeabi/objs/audi
    
ocodec/ffmpeg_audio.o: In function `JNI_OnLoad':
    
/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/jni/ffmpeg_audio.cpp:25: un
    
defined reference to `av_register_all()'
    
collect2: ld returned 1 exit status
    
make: *** [/cygdrive/c/Gabriel/Desenvolvimento/Workspace/FFMPEG/obj/local/armeab
    
i/libaudiocodec.so] Error 1

    Something interesting is that some functions from ffmpeg, as av_register_all(), do now show up on the list of undefined references.

    Any ideas on what I can do to fix it ? I´ve spent 3 days trying to make things work ..
    Thanks !

  • FFMPEG : Images are being loaded wrong (They for some reason have a duration) [closed]

    25 mars 2021, par Bas950

    On my video I am adding multiple overlays, 1 that will always be shown (Overlay/overlay.png) and I got a progress bar in PNGs named 0 to the last frame num.

    


    I tried ffmpeg -i 6875126077795372290.mp4 -i Overlay/overlay.png -i Overlay/ProgressBar/%d.png -filter_complex "[0:v][1:v]overlay=0:0[bg];[bg][2]overlay=0:20" output.mp4 which @llogan sent me and it does it all, but strangely the video is now 6 seconds longer (from 11sec to 17sec).
    
It seems like when it loads the images it make it have a duration of 17seconds (see full log linked below).

    How should I solve this ? (I got this file information using ffprobe)
    
Full file information : https://pastebin.com/rxkK39h7
    
Full ffmpeg log : https://pastebin.com/CBiusbRE

    


  • avformat : add demuxer for Pro Pinball Series' Soundbanks

    4 mai 2020, par Zane van Iperen
    avformat : add demuxer for Pro Pinball Series' Soundbanks

    Adds support for the soundbank files used by the Pro Pinball series of games.
    

    https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2020-May/262094.html
    

    Signed-off-by : Zane van Iperen <zane@zanevaniperen.com>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] Changelog
    • [DH] libavformat/Makefile
    • [DH] libavformat/allformats.c
    • [DH] libavformat/pp_bnk.c
    • [DH] libavformat/version.h

Navigation