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• FFMPEG Compile Custom

  14 décembre 2016, par Madskillz RCE

  I need to compile FFMPEG with version 2.1.8 of source and with the following options -

  ./configure --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32- --cc=i686-w64-mingw32-gcc --disable-postproc --enable-shared --disable-static --disable-decoder=libvpx --disable-encoder=aac --enable-avisynth --enable-gpl --enable-version3 --enable-pthreads --enable-avfilter --enable-runtime-cpudetect --enable-nonfree --pkg-config=pkg-config --enable-libquvi --enable-libfaac --enable-libnut --enable-libgsm --enable-libfreetype --enable-libvorbis --enable-libspeex --enable-libmp3lame --enable-zlib --enable-libtheora --enable-bzlib --enable-libvpx --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libschroedinger --enable-librtmp --enable-libass --enable-libx264 --enable-libbluray --enable-openssl --enable-libflite --enable-libsox --disable-ffplay --enable-libcdio --enable-libcelt --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libxavs --disable-outdev=sdl --disable-muxers --enable-muxer=encx --extra-cflags=-I/usr/i686-mingw32/include --extra-ldflags=-L/usr/i686-mingw32/lib --extra-libs='-lx264 -lpthread -lwinmm -llua -liconv -lcurl -lws2_32 -lssl -lcrypto -lwldap32 -lgdi32 -lwsock32' 

  I need to know on which system will be good to compile this ?

  also some libraries might be obsolete so where can I find them ?

  Please provide your input how would you compile it ?

  The configuration was extracted from a custom version of avcodec-55.dll , need to demux a video using new compiled ffmpeg.

  Regards

• opencv3.1 python VideoCapture black screen

  3 mai 2017, par alex

  i’m trying to use opencv3.1 with python3.5
  following this official)tutorial
  http://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_video_display/py_video_display.html#display-video

  the camera led is "on" but the window doesn’t show any image (black)

  my current enviroment :
   windows 10
   python 3.5.2 (32bit)
   numpy 1.12.0b1 (32bit) binaries downloaded from : http://www.lfd.uci.edu/ gohlke/pythonlibs/
   opencv 3.1.0 (32bit) binaries downloaded from : http://www.lfd.uci.edu/ gohlke/pythonlibs/

  they seem installed correctly !

  as the tutorial says :

  Note Make sure proper versions of ffmpeg or gstreamer is installed. Sometimes, it is a headache to work with Video Capture mostly due to wrong installation of ffmpeg/gstreamer.

  i’ve no ffmpeg installed !!! so i suppose this is the cause of my problem
  so the questions are :
  1) which version of ffmpeg is needed ?
  2) how install ffmpeg on windows ? it seems a setup doesn’t exist(there is a binary section with a zip file ? how to use it after unzipped ?)
  3) is possible to see(in some way) if the opencv binaries(that i’ve downloaded) were compiled with ffmpeg support(flag ?)

  PS : i’ve tried to add the ffmpeg folder path the the PATH enviroment variable but nothing change

• Custom container in FFmpeg's libavformat

  16 novembre 2016, par Tiago Tomás

  I have a media server in Java capable of reading from multiple audio/video containers, encoding and also delivery using a different set of containers. For this, I’m using FFmpeg by launching multiple processes from Java.

  I’ve been tasked with implementing audio/video delivery using a custom (proprietary) container format that supports multiple audio/video codecs in order to integrate with another video delivery system.

  I’m currently evaluating my options and I’ve reached the conclusion that I either :

  1. Export audio/video from FFmpeg using an easily parseable format and then simply convert into the proprietary format, or
  2. I modify libavformat itself in order to add the new container format

  I’m strongly inclined to try the second approach but I’m pressed for time and as such, I would like to ask whether anyone has had experience with custom container formats and can provide me with some guidance.

  If not, a recommendation on which container to use (that can be easily parsed) for the first approach would also be really helpful.

  Thank you in advance.