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• How to install ffmpeg-php on CentOS 7

  8 février 2015, par Mark van Marion

  I have succesfully installed ffmpeg on CentOS 7, but just wont succeed installing the ffmpeg-php, because i get the following error (this is when i do the ’./configure’ command) :

  checking for PHP extension directory... /usr/lib64/php/modules
  
  checking for PHP installed headers prefix... /usr/include/php
  
  checking if debug is enabled... no
  
  checking if zts is enabled... no
  
  checking for re2c... no
  
  configure: WARNING: You will need re2c 0.13.4 or later if you want to regenerate PHP parsers.
  
  checking for gawk... gawk
  
  checking for ffmpeg support... yes, shared
  
  checking whether to force gd support in ffmpeg-php... no
  
  checking for ffmpeg headers... 
  
  configure: error: ffmpeg headers not found. Make sure ffmpeg is compiled as     shared libraries using the --enable-shared option

  But ffmpeg is compiled as shared libary..

  ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jun 17 2014 01:25:46 with gcc 4.8.2 (GCC) 20140120 (Red Hat 4.8.2-16)
  
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --disable-stripping
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  I have searched all over the internet, but cant find a answer. I hope someone can help me !

• How to send video to TikTok live stream from my Ubuntu laptops ? [closed]

  21 août 2022, par Request Lewis

  I have a TikTok account with over 1000 followers.
I want to send a video to a live TikTok stream from my Ubuntu laptop.
I want to use RTMP streaming.
I can use GStreamer or ffmpeg to prepare live video.
How can I send this video to my TikTok account after preparation ?

  


• VideoWriter do not write anything

  29 avril 2015, par Nelson

  When I try to use VideoWriter to write a frame it does not work. I already tried lots of FOURCC codes, like the defaul, h264, mjpg, divx, xvid, etc. And yes, I have installed ffmpeg with all the necessary configurations (—enable-shared, —enable-libx264, ...) and the opencv installation is with ffmpeg support on.

  I already google it a lot and everything that I found do not even nearly solve this problem, that is recurrent in OpenCV. The code is the simplest possible, and it worked a few weeks back, but not it does not.

  A few insights : get(CV_CAP_PROP_FPS) returns the unknown option message, with the -1 value (the same happens for the set). The following part of the cmake process of opencv is also interesting :

  -- Could NOT find Jasper (missing:  JASPER_LIBRARIES JASPER_INCLUDE_DIR) 
  
  -- checking for module 'gstreamer-video-1.0'
  
  --   package 'gstreamer-video-1.0' not found
  
  -- checking for module 'gstreamer-app-1.0'
  
  --   package 'gstreamer-app-1.0' not found
  
  -- checking for module 'gstreamer-riff-1.0'
  
  --   package 'gstreamer-riff-1.0' not found
  
  -- checking for module 'gstreamer-pbutils-1.0'
  
  --   package 'gstreamer-pbutils-1.0' not found
  
  -- checking for module 'gstreamer-base-0.10'
  
  --   package 'gstreamer-base-0.10' not found
  
  -- checking for module 'gstreamer-video-0.10'
  
  --   package 'gstreamer-video-0.10' not found
  
  -- checking for module 'gstreamer-app-0.10'
  
  --   package 'gstreamer-app-0.10' not found
  
  -- checking for module 'gstreamer-riff-0.10'
  
  --   package 'gstreamer-riff-0.10' not found
  
  -- checking for module 'gstreamer-pbutils-0.10'
  
  --   package 'gstreamer-pbutils-0.10' not found
  
  -- Looking for linux/videodev.h
  
  -- Looking for linux/videodev.h - not found
  
  -- Looking for linux/videodev2.h
  
  -- Looking for linux/videodev2.h - found
  
  -- Looking for sys/videoio.h
  
  -- Looking for sys/videoio.h - not found
  
  -- Looking for libavformat/avformat.h
  
  -- Looking for libavformat/avformat.h - found
  
  -- Looking for ffmpeg/avformat.h
  
  -- Looking for ffmpeg/avformat.h - not found

  Opencv 2.4.10
  Ubuntu 14.04

  EDIT : I found out that the problem is that the VideoWriter object isn’t open, even after the constructor call :

  VideoWriter wr(outputFile, CV_FOURCC('D','I','V','X'), capture.get(CV_CAP_PROP_FPS,Size(capture.get(CV_CAP_PROP_FRAME_WIDTH),capture.get(CV_CAP_PROP_FRAME_HEIGHT)));

  And using the CV_CAP_PROP_FPS makes OpenCV show the following message in secution time :

  HIGHGUI ERROR: V4L2: Unable to get property <unknown property="property" string="string">(5) - Invalid argument
  
  </unknown>

  Why this hqppen, how can I fix that ?