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• Slient crash when calls to ffmpeg's libav exist

  9 juin 2021, par William Lohan

  I have a fairly simple example.

  


  #include <iostream>&#xA;&#xA;extern "C"&#xA;{&#xA;#include <libavutil></libavutil>opt.h>&#xA;#include <libavutil></libavutil>avutil.h>&#xA;#include <libavcodec></libavcodec>avcodec.h>&#xA;#include <libavformat></libavformat>avformat.h>&#xA;}&#xA;&#xA;int main(int, char **)&#xA;{&#xA;  AVFormatContext *format = 0; // avformat_alloc_context();&#xA;&#xA;  // avformat_open_input(&amp;format, "http://s5radio.ponyvillelive.com:8026/stream.mp3", NULL, NULL);&#xA;  // avformat_find_stream_info(format, NULL);&#xA;&#xA;  std::cout &lt;&lt; "Hello, world!" &lt;&lt; std::endl;&#xA;&#xA;  return 0;&#xA;}&#xA;</iostream>

  


  I this outputs "Hello, world !" and I can set break points but the moment I uncomment anything calling avformat code the program silently closes with no error and no break points are hit making it impossible to debug.

  


  An example would be changing AVFormatContext *format = 0; to AVFormatContext *format = avformat_alloc_context(); or uncommenting avformat_open_input(&format, "http://s5radio.ponyvillelive.com:8026/stream.mp3", NULL, NULL);. Without breakpoints or errors how do I solve ?

  


  Update :
This is what I get from the debugger :

  


  


  ERROR : Unable to start debugging. Unexpected GDB output from command "-exec-run". During startup program exited with code 0xc0000139.
The program 'path\to\my\project\LibavPlayground.exe' has exited with code 0 (0x00000000).

  


  


  Update2 :

  


  this is my cmake :

  


  cmake_minimum_required(VERSION 3.0.0)
project(LibavPlayground VERSION 0.1.0 LANGUAGES CXX C)

find_package(PkgConfig REQUIRED) 
pkg_check_modules(LIBAV REQUIRED libavutil libavcodec libavformat)
include_directories(${LIBAV_INCLUDE_DIRS})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__STDC_CONSTANT_MACROS -Wno-deprecated-declarations")

include_directories(include PUBLIC)
include_directories(src PRIVATE)

file(GLOB SRC_FILES ${PROJECT_SOURCE_DIR}/src/*.cpp)

add_executable(LibavPlayground ${SRC_FILES})
target_link_libraries(LibavPlayground ${LIBAV_LIBRARIES})


  


  and all the libav* libraries were installed with a single pacman -S mingw-w64-x86_64-ffmpeg command

  


• Avconv / FFmpeg - VOB to mp4

  26 septembre 2017, par 0ne_Up

  I am using avconv/ffmpeg to convert VOB files copied from a DVD to mp4. The command I’m using is

  avconv -i "concat:1.VOB|2.VOB|3.VOB|4.VOB|5.VOB" -c:v libx264 -crf 28 -c:a libvo_aacenc -b:a 128k output.mp4

  This is working, but I’ve seen many different commands using different kinds of arguments, and I’m wondering if this is the "right" way to do it, and if someone has suggestions about which arguments I should (not) use and why (not). The file should be compatible with mobile devices and smart TV’s. I’ve also seen "libmp3lame" being used as audio codec, is it better to use AAC or MP3 ?

  The file size is 732.6MB for a video lasting 00:58:37, is this reasonable ?
  Maybe I can use something to reduce the filesize further without too much quality loss ?

  I’m also confused about the difference between Avconv and FFmpeg. I thought that FFmpeg is deprecated and Avconv is "newer and better", I have two installations of Linux Mint, when I run "avconv —help" on a 17.1 installations I see

  avconv version 9.20-6:9.20-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers

  And when I run the same command on a 18.1 installation I see

  ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers

  Is avconv newer than ffmpeg or is it just a different name for the same thing ?

• Piwik Analytics becomes Matomo to reflect Users’ Privacy Focus

  10 janvier 2018, par Matomo Core Team

  One of the world’s leading analytics software platforms is changing its name. Piwik is the sixth most-used web and mobile analytics computer solution worldwide. It is now changing its name to Matomo.

  The name change comes after 10 years of Piwik building its top analytics software, with great success. It is already used on over one million websites in more than 170 countries. Matomo will build on that success, and focus even more on privacy.

  ‘Privacy has become a huge concern worldwide’, says Matomo’s creator, Matthieu Aubry. ‘Privacy legislation is being developed in Europe, and we will be ahead of the game in being ready for those changes. We’ll grow in line with the law and regulation changes.’

  Matomo will lead the way in openness and transparency for its users. Its new name means honesty in Japanese.
  ‘Matomo will always be free and community-driven, just as Piwik was’, says Matthieu Aubry. ‘We have worked with hundreds of people to create the best open digital analytics solution in the world. We’re committed to giving every user full control of their data.’

  The change of name is appropriate as the Matomo platform moves into a new stage of growth. But for its community, little will obviously change. The same people will still be involved, and users will still get useful data to improve their own website. That data includes who visits their site, what they do there, how long they stay, and what they buy.
  Matomo is an all-in-one analytics solution that gives companies a 360 degree view of their users.

  ‘They can grow their business while still keeping 100% ownership of their data, and being fully compliant with privacy laws’, says Matthieu Aubry. ‘We’re more motivated than ever to building on that, so that Matomo stays ahead of the pack.’

  The platform can be fully customised with hundreds of plug-ins, integrations and configurations.

  Matomo’s updated website and new logo is now available on https://matomo.org.
  For further information, please contact the Matomo Team on hello@matomo.org

  The post Piwik Analytics becomes Matomo to reflect Users’ Privacy Focus appeared first on Analytics Platform - Matomo.