Recherche avancée

Médias (16)

Mot : - Tags -/mp3

Autres articles (43)

Sur d’autres sites (8557)

  • FFMPEG : Writing raw planar sample format into a file

    24 juin 2013, par user2439801

    i've started using ffmpeg on Visual Studio 2010 and encounter some problem on writing planar audio samples into a file.

    For packed sample format i just use :

    fwrite(audio_data[0], 1, audio_bufsize, audio_file);

    where audio_data[0] is my buffer and audio_buffsize is the size of my buffer and audio_file is the pointer to my file.

    When i use this line to write packed sample format everything seems to be fine, but when i try to write planar sample format i got the sound but with a lot of noises.

    So is there better (or correct) way to write planar sample format or do i have to resample it into packed sample format ?

    Thanks

  • Need help to compile FFmpeg with MSVC tools

    30 janvier 2018, par Antwane

    I need to compile FFmpeg on Windows 10 using MSVC 2017 compiler. I followed some guides from :

    I installed current stable version of MSYS, fixed link.exe and use of PATH environment, installed make diffutils gcc pkg-config and downloaded c99-to-c89, nasm, and inttypes.h

    I think my environment is now correctly set up, I ran MSYS shell from MSVC Command prompt and have everything reachable.

    $ which cl
    
/c/Program Files (x86)/Microsoft Visual Studio/2017/Professional/VC/Tools/MSVC/14.12.25827/bin/HostX64/x64/cl
    

    
$ which link
    
/c/Program Files (x86)/Microsoft Visual Studio/2017/Professional/VC/Tools/MSVC/14.12.25827/bin/HostX64/x64/link
    

    
$ which yasm
    
/home/Antoine/bin/yasm
    

    
$ which c99conv
    
/home/Antoine/bin/c99conv
    

    
$ which c99wrap
    
/home/Antoine/bin/c99wrap

    Now I configure the build

    $ ./configure --toolchain=msvc
    
install prefix            /usr/local
    
source path               .
    
C compiler                cl
    
C library                 msvcrt
    
ARCH                      x86 (generic)
    
big-endian                no
    
runtime cpu detection     yes
    
standalone assembly       yes
    
x86 assembler             nasm
    
MMX enabled               yes
    
MMXEXT enabled            yes
    
3DNow! enabled            yes
    
3DNow! extended enabled   yes
    
SSE enabled               yes
    
SSSE3 enabled             yes
    
AESNI enabled             yes
    
AVX enabled               yes
    
AVX2 enabled              yes
    
XOP enabled               yes
    
FMA3 enabled              yes
    
FMA4 enabled              yes
    
i686 features enabled     yes
    
CMOV is fast              yes
    
EBX available             no
    
EBP available             no
    
debug symbols             yes
    
strip symbols             no
    
optimize for size         no
    
optimizations             yes
    
static                    yes
    
shared                    no
    
postprocessing support    no
    
network support           yes
    
threading support         w32threads
    
safe bitstream reader     yes
    
texi2html enabled         no
    
perl enabled              no
    
pod2man enabled           no
    
makeinfo enabled          no
    
makeinfo supports HTML    no
    

    
External libraries:
    
schannel                 xlib
    

    
External libraries providing hardware acceleration:
    
cuda                     cuvid                    d3d11va                  dxva2                    nvenc
    

    
Libraries:
    
avcodec                  avdevice                 avfilter                 avformat                 avutil                   swresample               swscale
    

    
Programs:
    
ffmpeg                   ffprobe
    

    
[...]
    
Hundreds of modules, library, etc.
    
[...]
    

    
License: LGPL version 2.1 or later
    
Creating configuration files ...
    
config.h is unchanged
    
config.asm is unchanged
    
libavutil/avconfig.h is unchanged
    
libavcodec/bsf_list.c is unchanged
    
libavformat/protocol_list.c is unchanged

    But when I run make it stops very quickly

    $ make
    
Makefile:47: la cible « qt-faststart » ne correspond pas au motif de cible
    
Makefile:47: la cible « trasher » ne correspond pas au motif de cible
    
Makefile:47: la cible « uncoded_frame » ne correspond pas au motif de cible
    
Makefile:91: ffbuild/library.mak: No such file or directory
    
make: *** Aucune règle pour fabriquer la cible « ffbuild/library.mak ». Arrêt.

    Sorry for the french wording, I don’t know how to tell MSVC print its output in english. Basically, the error means :

    Makefile:47: target « qt-faststart » doesn't match the target pattern
    
make: *** No rule to make target « ffbuild/library.mak ». Stopped.

    Side notes :

    $ tree ffbuild
    
ffbuild
    
├── config.fate
    
├── config.log
    
├── config.mak
    
└── config.sh

    That’s right, library.mak were not generated into ffbuild, but I don’t know why, and configure script didn’t output any error message...

    Does anybody can help me to find out what am I doing wrong ?

    Edit :

    make distclean doesn’t help

    $ make distclean
    
Makefile:47: la cible « qt-faststart » ne correspond pas au motif de cible
    
Makefile:47: la cible « trasher » ne correspond pas au motif de cible
    
Makefile:47: la cible « uncoded_frame » ne correspond pas au motif de cible
    
Makefile:91: ffbuild/library.mak: No such file or directory
    
make: *** Aucune règle pour fabriquer la cible « ffbuild/library.mak ». Arrêt.

  • ffmpeg avcodec_get_frame_defaults was declared deprecated [on hold]

    14 avril 2019, par n2v2rda2

    To make ffmpeg simple player

    I refer to ffmpeg sample code
    (https://github.com/phamquy/FFmpeg-tutorial-samples/blob/master/tutorial03.c)

    In window 7 with visual studio 12

    First I made cmd-project, all link, and complie is OK

    But when I press F5 in vs12

    **1>ConsoleApplication1.cpp (141): error C4996: 'avcodec_get_frame_defaults': was declared deprecated
    
   Failed | ConsoleApplication1\ConsoleApplication1.vcxproj [Debug|x64]**

    What happen with me ?

    I download latest ffmpeg DLL again, but noting is changed

Navigation