Recherche avancée

Médias (1)

Mot : - Tags -/musée

Autres articles (52)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

Sur d’autres sites (8810)

  • Best tool to convert mp3 to aac (FFmpeg Vs NeroAacEnc) [closed]

    3 août 2012, par Soham Dasgupta

    My question is straight forward. I want to convert mp3 to aac. I have knowledge of two such tools which does the job - NeroAacEnc and FFMpeg. Now which one produces the best output and least size is for maestros to answer, so I summon them here to help me accomplish the same. Please also help me with some commands with which I can use.

    Just out of curiosity, is the (ALAC)Apple Lossless Audio Codec which is included with FFMpeg better than Nero Aac Encoder. If so, then how can I use it to convert mp3 to aac.

  • errors of 'vaGetDisplay' and `vaGetDisplayDRM' [duplicate]

    29 novembre 2018, par Kindermann

    This question already has an answer here :

    After updating my ubuntu OS from 14.04 to 16.04, I installed the ffmpeg library using the following configurations :

    PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
    
  --prefix="$HOME/ffmpeg_build" \
    
  --pkg-config-flags="--static" \
    
  --extra-cflags="-I$HOME/ffmpeg_build/include" \
    
  --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
    
  --bindir="$HOME/bin" \
    
  --enable-gpl \
    
  --enable-libass \
    
  --enable-libfdk-aac \
    
  --enable-libfreetype \
    
  --enable-libmp3lame \
    
  --enable-libopus \
    
  --enable-libtheora \
    
  --enable-libvorbis \
    
  --enable-libvpx \
    
  --enable-libx264 \
    
  --enable-nonfree
    
PATH="$HOME/bin:$PATH" make
    
make install

    It seemed to me the installation process was ok. After that, I tried to compile my own C source code with the following Makefile :

    EDITTED(adding -lva-drm -lva-x11 at line 10)

    FFMPEG_LIBS=    libavdevice                        \
    
                libavformat                        \
    
                libavfilter                        \
    
                libavcodec                         \
    
                libswresample                      \
    
                libswscale                         \
    
                libavutil                          \
    

    
TARGET = video_analysis
    
LIBS = -lva -lX11 -lvdpau -lm -lva-drm -lva-x11
    
CC = gcc
    
CFLAGS += -O2 -g -O0
    
CFLAGS := $(shell pkg-config --cflags $(FFMPEG_LIBS)) $(CFLAGS)
    
LDLIBS := $(shell pkg-config --libs $(FFMPEG_LIBS)) $(LDLIBS)
    

    
.PHONY: default all clean
    

    
default: $(TARGET)
    
all: default
    

    
OBJECTS = $(patsubst %.c, %.o, $(wildcard *.c))
    
HEADERS = $(wildcard *.h)
    

    
%.o: %.c $(HEADERS)
    
        $(CC) $(CFLAGS) -c $< -o $@
    

    
.PRECIOUS: $(TARGET) $(OBJECTS)
    

    
$(TARGET): $(OBJECTS)
    
    $(CC) $(OBJECTS) $(LDLIBS) $(LIBS) -o $@
    

    
clean:
    
    -rm -f *.o
    
    -rm -f $(TARGET)

    However, my compiler complained the following errors :

    /root/ffmpeg_build/lib/libavutil.a(hwcontext_vaapi.o): In function `vaapi_device_create':
    
/home/widerstand/ffmpeg_sources/ffmpeg/libavutil/hwcontext_vaapi.c:896: undefined reference to `vaGetDisplay'
    
/home/widerstand/ffmpeg_sources/ffmpeg/libavutil/hwcontext_vaapi.c:917: undefined reference to `vaGetDisplayDRM'
    
collect2: error: ld returned 1 exit status
    
Makefile:30: recipe for target 'video_analysis' failed
    
make: *** [video_analysis] Error 1

    My question is : in which library do ’vaGetDisplay’ and `vaGetDisplayDRM’ exist ? It’s for sure that libva functions properly. I have no clue how to fix the bugs...Thank you in advance !

  • What is av_opt_set in FFMPEG

    18 mai 2021, par pseudo_teetotaler

    I am looking at some code base to encode videos in LibAV. I am unable to understand the purpose of these two lines :

    



    av_opt_set(context->priv_data, "tune", "zerolatency", 0);
av_opt_set(context->priv_data, "preset", "fast", 0);


    



    Here, context is AVCodecContext.

    



    I am new to this library and would appreciate a descriptive answer.

    


Navigation