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    Puis-je poster des contenus à partir d’une tablette Ipad ?
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    Modifier le thème graphique utilisé
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Sur d’autres sites (13327)

  • qsv : add requirement for the mininal version of libmfx

    22 mai 2022, par Haihao Xiang
    qsv : add requirement for the mininal version of libmfx

    libmfx 1.28 was released 3 years ago, it is easy to get a greater
    
version than 1.28. We may remove lots of compile-time checks if adding
    
the requirement for the minimal version in the configure script.
    

    Reviewed-by : softworkz <softworkz@hotmail.com>
    
Signed-off-by : Jean-Baptiste Kempf <jb@videolan.org>
    
Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
    • [DH] configure
    • [DH] libavcodec/qsv.c
    • [DH] libavcodec/qsvenc.c
    • [DH] libavcodec/qsvenc.h
    • [DH] libavcodec/qsvenc_h264.c
    • [DH] libavcodec/qsvenc_hevc.c
    • [DH] libavfilter/vf_scale_qsv.c
    • [DH] libavfilter/vf_vpp_qsv.c
    • [DH] libavutil/hwcontext_qsv.c

  • ffmpeg build from source fails in docker container ?

    24 mars 2016, par John Allard

    I’m trying to make some changes to the ffmpeg source code (yes, I’m a masochist), and to start I booted an Arch Linux docker container, installed the requirements, downloaded ffmpeg source code, and tried to compile, but I’m getting some extremely odd errors.

    compile command :

    ./configure --bindidr=~/ffmpeg_build --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree

    Output :

    ./configure:unset:3338: no such has table element: mktemp
    
pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
    
pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
    
pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
    
pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
    
... (24 times)
    
pr: /tmp/ffconf.uQI7CeV.c: No such file or directory.
    
pr: /tmp/ffconf.r547UgWy.m: No such file or directory.
    
./configure:53378: parse error near '}'
    
==> ERROR" A failure occured in build()
    
    Aborting...
    
The build failed.

    This doesn’t seem to be a problem with ffmpeg, more a problem with the container. If I check find /tmp -name ffconf\* I see that the files do exist and they contain

    extern int getrusage();
    
int main(void){ getrusage(); }

    what in the hell is going on ? hash tabled ? mktemp not working ? files not being found ?

    edit-

    here is what is on the line numbers in the files that give the errors

    3338:configure - unset -f mktemp
    
5338:configure - check_builtin gmtime_r time.g "time_t * time; strict tm*; gmtime_r(time, tm)"

    edit2 - Here’s the dockerfile (cloned from here https://hub.docker.com/r/greyltc/archlinux/ /dockerfile/)

    # Arch Linux baseline docker container
    
# Generated on Sat Mar 19 14:26:28 GMT 2016 using code in this GitHub repo:
    
# https://github.com/greyltc/docker-archlinux
    
FROM scratch
    
MAINTAINER Grey Christoforo &lt;grey@christoforo.net&gt;
    

    
# copy in super minimal root filesystem archive
    
ADD archlinux.tar.xz /
    

    
# perform initial container setup tasks
    
RUN setup-arch-docker-container
    

    
# this allows the system profile to be sourced at every shell
    
ENV ENV /etc/profile

  • Raspberry crosscompilation in Eclipse

    27 juin 2018, par gogoer

    I want to compile an application for Raspberry in Eclipse (in windows). I installed SysGCC, configured Eclipse for crosscompiling. And if I create something like "Hello world" - everything is ok. Eclipse creates binaries which wonderfully works on Raspberry.
    But i need use FFMPEG libraries in my application . Here the minimal code of application :

    #include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    
#include <libswscale></libswscale>swscale.h>
    

    
int main(void) {
    
    av_register_all();
    
    return EXIT_SUCCESS;
    
}

    I added libraries in project config. Project compiles good, but linker gives a lot of errors :

    C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib\libavcodec.a(aaccoder.o): In function `quantize_and_encode_band_cost_template':
    
/usr/src/ffmpeg/libavcodec/aacenc_quantization.h:108: undefined reference to `cbrtf'
    
/usr/src/ffmpeg/libavcodec/aacenc_quantization.h:108: undefined reference to `cbrtf'
    
/usr/src/ffmpeg/libavcodec/aacenc_quantization.h:108: undefined reference to `cbrtf'
    
/usr/src/ffmpeg/libavcodec/aacenc_quantization.h:108: undefined reference to `cbrtf'
    
C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib\libavcodec.a(aacenc_is.o): In function `quantize_and_encode_band_cost_template':
    
/usr/src/ffmpeg/libavcodec/aacenc_quantization.h:108: undefined reference to `cbrtf'
    
C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib\libavcodec.a(aacenc_is.o):/usr/src/ffmpeg/libavcodec/aacenc_quantization.h:108: more undefined references to `cbrtf' follow
    
C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib\libavcodec.a(adx.o): In function `ff_adx_calculate_coeffs':
    
/usr/src/ffmpeg/libavcodec/adx.c:30: undefined reference to `cos'
    
/usr/src/ffmpeg/libavcodec/adx.c:34: undefined reference to `lrintf'
    
/usr/src/ffmpeg/libavcodec/adx.c:35: undefined reference to `lrintf'
    
/usr/src/ffmpeg/libavcodec/adx.c:30: undefined reference to `cos'
    
/usr/src/ffmpeg/libavcodec/adx.c:34: undefined reference to `lrintf'
    
/usr/src/ffmpeg/libavcodec/adx.c:35: undefined reference to `lrintf'
    
collect2.exe: error: ld returned 1 exit status
    
make: *** [ffmpeg] Error 1
    

    
02:21:24 Build Finished (took 8s.394ms)

    SOLVED :

    i used next command :

    arm-linux-gnueabihf-gcc -L"C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib" -L"C:\SysGCC\Raspberry\arm-linux-gnueabihf\lib" -o "ffmpeg"  ./src/ffmpeg.o   -lc -lm -lpthread -lavformat -lavcodec -lswscale -lavutil -lavfilter -lavdevice -lswresample -lpostproc -ldl -lx264 -lgcc -lz

    where -lc -lm -lpthread -lavformat -lavcodec -lswscale -lavutil -lavfilter -lavdevice -lswresample -lpostproc -ldl -lx264 -lgcc -lz are libraries linker needs (maybe not all of them).
    please note that order is important.

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