Recherche avancée

Sur d’autres sites (11107)

• Configure error for ffmpeg 6.1 when executing in bash 5.0.17

  1er mars 2024, par user2715311

  I am trying to install ffmpeg 6.1 (https://ffmpeg.org/releases/ffmpeg-6.1.1.tar.xz), but when executing the configure script my bash version 5.0.17 removes the double quotes from the parameters containing the condition to select the version of the libraries being searched for to pass this parameter to pkg-config.

  


  For example, when processing code

  


  check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version


  


  , the pkg-config call will look something like

  


  pkg-config --exists libopenjp2 >= 2.1.0


  


  As a result, configure execution stops with the following error.

  


  ERROR: libopenjp2 >= 2.1.0 not found using pkg-config


  


  As a hint, you may be prompted to set the path to the 2.1.0.pc file in PKG_CONFIG_PATH.

  


  It is interesting that this is the case in other versions of bash, for example, this problem is not observed in version 5.1.16.

  


  Does this mean that bash version 5.0.17 will actually not be able to work with configure to build most code sources, because such version selection conditions are used quite often when searching for the right libraries ?

  


  Or perhaps I can influence this bash behaviour in some way ? Or, alternatively, have I misinterpreted the problem at all and the solution is in a completely different area ?

  


  The problem was identified in the Linux Mint 20.1 distribution.

  


  $ lsb_release -a
No LSB modules are available.
Distributor ID: Linuxmint
Description:    Linux Mint 20.1
Release:    20.1
Codename:   ulyssa


  


  First of all, I checked that if I call pkg-config correctly, it can find the right library on my system.

  


  $ pkg-config --exists "libopenjp2 >= 2.1.0"
$ echo $?
0


  


  or

  


  $ pkg-config --cflags --libs "libopenjp2 >= 2.1.0"
-I/usr/include/openjpeg-2.3 -lopenjp2


  


  Next, I examined the configure code associated with this problem and came to the conclusion I outlined above.

  


• Compiling ffmpeg for chromium on Windows

  7 janvier 2019, par ykhandel

  I am following the instructions here to generate the gn files for Chromium. I have installed the cygwin base package along with diffutils, nasm, make and python.

  Also, I have copied chromium/scripts/cygwin-wrapper to /usr/local/bin

  1. Started C :\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\Tools\VsDevCmd.bat

  2. Started C :\cygwin\cygwin.bat

  3. cd to third_party\chromium\scripts

  4. python build_ffmpeg win ia32

  I am getting some warnings plus this :

  Could not create temporary library.
  make : *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102 : libavutil/avutil-56.dll] Error 1

  make : *** Waiting for unfinished jobs....

  Could not create temporary library.

  Could not create temporary library.

  make : *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102 : libavcodec/avcodec-58.dll] Error 1

  make : *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102 : libavformat/avformat-58.dll] Error 1

  Traceback (most recent call last) :

  File "build_ffmpeg.py", line 900, in

  sys.exit(main(sys.argv[1 :]))

  File "build_ffmpeg.py", line 502, in main

  options=options)

  File "build_ffmpeg.py", line 876, in ConfigureAndBuild

  configure_args)

  File "build_ffmpeg.py", line 870, in do_build_ffmpeg

  options.config_only, branding, configure_flags)

  File "build_ffmpeg.py", line 408, in BuildFFmpeg

  [’make’, ’-j%d’ % parallel_jobs] + libraries, cwd=config_dir)

  File "build_ffmpeg.py", line 106, in PrintAndCheckCall

  subprocess.check_call(argv, *args, **kwargs)

  File "/usr/lib/python2.7/subprocess.py", line 186, in check_call

  raise CalledProcessError(retcode, cmd)

  subprocess.CalledProcessError : Command ’[’make’, ’-j8’, ’libavcodec/avcodec-
  58.dll’, ’libavformat/avformat-58.dll’, ’libavutil/avutil-56.dll’]’ returned non-zero exit status 2

• aacenc : remove the experimental flag

  5 décembre 2015, par Rostislav Pehlivanov

  aacenc : remove the experimental flag
  Thiss commit removes the experimental flag from the native AAC Encoder
  
  and thus makes it the default.
  After a lot of work, done by myself and Claudio Freire, the quality of
  
  this encoder rivals and surpasses libfdk_aac in some situations. The
  
  encoder had instability issues earlier which prevented it from having
  
  its experimental flag removed, however the last commits done by Claudio
  
  removed the last known source of instability and solved a lot of
  
  problems which were previously observed. The issues were caused by the
  
  various coding tools interfering with the scalefactor indices. Thus,
  
  with these problems solved, it should now be possible to declare this
  
  encoder as the default and recommend that the users should use it
  
  instead of others provided by external libraries, as it is both faster
  
  and has a subjectively higher quality with selected tracks.
  
  The encoder has still yet to be fine tuned for every possible audio file
  
  type like music or voice, so it is hoped that with the experimental flag
  
  removed the users should be able to provide feedback and make the
  
  encoder better than the alternatives for every type of audio and at
  
  every bitrate.
  Signed-off-by : Rostislav Pehlivanov <atomnuker@gmail.com>
  

  • [DH] libavcodec/aacenc.c