Recherche avancée

Sur d’autres sites (4564)

• bad audio mic recording quality with ffmpeg compared to sox

  1er juillet 2021, par user2355330

  I am contacting you as after 3 days of searching I am stuck on a really simple point.

  


  I want to record the sound of my mic on MacOS using ffmpeg.

  


  I managed to do it using the following command :

  


  ffmpeg -f avfoundation -audio_device_index 2 -i "none:-" -c:a pcm_s32l alexspeaking.wav -y -loglevel debug


  


  The issue is that each time I am speaking, there are cracks and pop in the sound...

  


  I tried to use sox and it gave me a perfect and crystal clear sound and I have no idea why... Below is the output of the sox command :

  


  sox -t coreaudio "G935 Gaming Headset" toto.wav -V6
sox:      SoX v
time:     Nov 15 2020 01:06:02
uname:    Darwin MacBook-Pro.local 20.5.0 Darwin Kernel Version 20.5.0: Sat May  8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 x86_64
compiler: gcc Apple LLVM 12.0.0 (clang-1200.0.32.27)
arch:     1288 48 88 L
sox INFO coreaudio: Found Audio Device "DELL U2721DE"
sox INFO coreaudio: Found Audio Device "G935 Gaming "
sox DBUG coreaudio: audio device did not accept 2 channels. Use 1 channels instead.
sox DBUG coreaudio: audio device did not accept 44100 sample rate. Use 48000 instead.
Input File     : 'G935 Gaming Headset' (coreaudio)
Channels       : 1
Sample Rate    : 48000
Precision      : 32-bit
Sample Encoding: 32-bit Signed Integer PCM
Endian Type    : little
Reverse Nibbles: no
Reverse Bits   : no
sox INFO sox: Overwriting `toto.wav'
sox DBUG wav: Writing Wave file: Microsoft PCM format, 1 channel, 48000 samp/sec
sox DBUG wav:         192000 byte/sec, 4 block align, 32 bits/samp
Output File    : 'toto.wav'
Channels       : 1
Sample Rate    : 48000
Precision      : 32-bit
Sample Encoding: 32-bit Signed Integer PCM
Endian Type    : little
Reverse Nibbles: no
Reverse Bits   : no
Comment        : 'Processed by SoX'
sox DBUG effects: sox_add_effect: extending effects table, new size = 8
sox INFO sox: effects chain: input        48000Hz  1 channels (multi) 32 bits unknown length
sox INFO sox: effects chain: output       48000Hz  1 channels (multi) 32 bits unknown length
sox DBUG sox: start-up time = 0.051332
In:0.00% 00:00:07.13 [00:00:00.00] Out:340k  [      |      ]        Clip:0    ^C
sox DBUG input: output buffer still held 2048 samples; dropped.
Aborted.
sox DBUG wav: Finished writing Wave file, 1359872 data bytes 339968 samples


  


  I am pretty sure the issue is linked to the way the encoding is done and the params I used with ffmpeg but I don't seem to be able to grasp which one I must use.

  


  Any ideas if there are ffmpeg experts here ?

  


• Aubio (aubioonset.exe) on Windows - can't find ffmpeg libraries

  7 octobre 2024, par Peter Wirdemo

  I have installed Aubio on Windows but when trying to use the tools, like aubioonset.exe, I am faced with the following error message :

  


  C:/Peter/aubio/aubio/aubio-0.4.6-win64-ffmpeg/bin/aubioonset.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory


  


  I assume it looks after ffmpeg libraries. I have FFmpeg installed and bin-dir added to PATH environment variable. FFMPEG is working flawless globally.

  


  After searching internet for answers to my issue I find "answers" like :
"install chosen libraries (for instance ffmpeg, with header files)"

  


  That vague answer doesn't help me at all. Exactly how do I install ffmpeg libraries, with header files, so that the Aubio-tools can find them ? I need specifics about what environmental-variables must be set - or - should the ffmpeg lib-files be placed in the Aubio Build folder somewhere, or what should I do ?

  


  And after doing that I am supposed to recompile and reinstall Aubio. I can do that.

  


  This is btw. the result from ./waf configure when building my own Aubio-binaries (instead of downloading pre-builds) :

  


  peter@DESKTOP-I0KNADQ MINGW64 /c/Peter/aubio/aubio (master)
$ ./waf configure
Setting top to                           : C:\Peter\aubio\aubio
Setting out to                           : C:\Peter\aubio\aubio\build
Checking for 'msvc' (C compiler)         : C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\CL.exe
Checking for header stdlib.h             : yes
Checking for header stdio.h              : yes
Checking for header math.h               : yes
Checking for header string.h             : yes
Checking for header errno.h              : yes
Checking for header limits.h             : yes
Checking for header stdarg.h             : yes
Checking for header getopt.h             : not found
Checking for header unistd.h             : not found
Checking for library m                   : not found
Checking for C99 __VA_ARGS__ macro       : yes
Checking for size of smpl_t              : float
Checking for size of lsmp_t              : double
Checking if complex.h is enabled         : no
Checking for FFT implementation          : ooura
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking for all libav libraries         : not found (missing avcodec)
Checking for program 'pkg-config'        : not found
Checking for program 'pkg-config'        : not found
Checking if using source_wavread         : yes
Checking if using sink_wavwrite          : yes
Checking for program 'txt2man'           : not found
Checking for program 'doxygen'           : not found
Checking for program 'sphinx-build'      : not found
'configure' finished successfully (7.590s)


  


  As can be seen above I have no problem building Aubio without external libraries.

  


  So my guess is that I can go down two different paths for a solution here : either try building with all external libraries somehow prepared (I have tried but can't change the output of ./waf configure no matter what I do. I have cloned the ffmpeg source from github. I can't figure out where ./waf configure is looking for it). Or I can get the precompiled binaries to work, by somehow installing the external libraries.

  


  I have tried both solutions in multiple ways, but fail getting any one of them to work.

  


• Vcpkg building FFmpeg with libxml2

  15 décembre 2019, par Subestima

  First off all im a newbie in this area so if im asking something really stupid or non sense im sorry in advance, so lets get right to the point... im trying to add features to the ffmpeg, and by what i know i have to modify CONTROL file and portfile.cmake but as it seems its not enough i dont understand the errors and i cant get more info about this in the internet so if you could give me some info how to do it properly it would allready mean a lot to me ! i will leave the portions of code and error file

  **portfile.cmake:**
  
  if("libxml2" IN_LIST FEATURES)
  
      set(OPTIONS "${OPTIONS} --enable-libxml2")
  
  endif()
  
  
  
  **CONTROL:**
  
  Feature: libxml2
  
  Description: Libxml2 is the XML C parser and toolkit developed for the Gnome project (but usable outside of the Gnome platform)
  
  Build-Depends: zlib, libiconv, liblzma
  
  
  
  **Command Prompt after (vcpkg install ffmpeg[libxml2]:x64-windows)**
  
  CMake Error at scripts/cmake/vcpkg_execute_required_process.cmake:72 (message):
  
      Command failed: C:/vcpkg/downloads/tools/msys2/msys64/usr/bin/bash.exe --noprofile --norc C:/vcpkg/ports/ffmpeg\build.sh C:/vcpkg/buildtrees/ffmpeg/x64-windows-rel C:/vcpkg/buildtrees/ffmpeg/src/n4.2-02d8c63f80 C:/vcpkg/packages/ffmpeg_x64-windows "--enable-asm --enable-yasm --disable-doc --enable-debug --enable-runtime-cpudetect --enable-libxml2 --disable-openssl --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-libvpx --disable-libx264 --disable-opencl --disable-lzma --disable-bzlib --enable-avresample  --disable-static --enable-shared --extra-cflags=-DHAVE_UNISTD_H=0  --extra-cflags=-MD --extra-cxxflags=-MD"
  
      Working Directory: C:/vcpkg/buildtrees/ffmpeg/x64-windows-rel
  
      Error code: 1
  
      See logs for more information:
  
        C:\vcpkg\buildtrees\ffmpeg\build-x64-windows-rel-out.log
  
  
  
  Call Stack (most recent call first):
  
    ports/ffmpeg/portfile.cmake:197 (vcpkg_execute_required_process)
  
    scripts/ports.cmake:94 (include)
  
  
  
  
  
  Error: Building package ffmpeg:x64-windows failed with: BUILD_FAILED
  
  Please ensure you're using the latest portfiles with `.\vcpkg update`, then
  
  submit an issue at https://github.com/Microsoft/vcpkg/issues including:
  
    Package: ffmpeg:x64-windows
  
    Vcpkg version: 2019.09.12-nohash**strong text**
  
  
  
  **Log Error file:**
  
  === CONFIGURING === ERROR: libxml-2.0 not found using pkg-config
  
  
  
  If you think configure made a mistake, make sure you are using the latest version from Git.  If the latest version fails, report the problem to the ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file "ffbuild/config.log" produced by configure as this will help solve the problem.

  Thank you for your attention,
  Regards Pedro Cunha !