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• I only have two presets for ffmpeg x264 in ubuntu 11.04

  17 octobre 2012, par Mr X Colombia

  I'me trying to install (compile) ffmpeg for ubuntu 11.04 by following this guide :

  https://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide

  Overall it works. Except for some errors with checkinstall due to numbering, which i resolved with this :

  http://judsonsnotes.com/notes/index.php?option=com_content&view=section&layout=blog&id=3&Itemid=54&limitstart=40

  I'd say it was installed ok.

  But when trying to encode some video with -vpre lossless_slow i get this error :

  File for preset lossless_slow not found.

  And in fact it doesn't exists. All i have is this :

  /usr/local/share/ffmpeg:
  
  libvpx-1080p50_60.ffpreset
  
  libvpx-1080p.ffpreset
  
  libvpx-360p.ffpreset
  
  libvpx-720p50_60.ffpreset
  
  libvpx-720p.ffpreset
  
  libx264-ipod320.ffpreset
  
  libx264-ipod640.ffpreset

  Where are all the other presets ? in google usually people have many more presets than i do. What did i do wrong ?

  From this post i'd say that they shopuld be there : http://git.videolan.org/?p=ffmpeg.git ;a=commit ;h=4b82e3cedcfc9871671bb613cd979de6995dcb4e

  Thanks a lot !

• Nomenclature #3465 : Nouvelle balise : #LOGO

  18 février 2021, par cedric -

  oué j’ai quand même un peu de réserves vis à vis d’un code stocké dans un wiki depuis 2 ans et qui a pas servi.
  A moins que ce soit quelque part dans un plugin ?
  bref faudrait trouver quelqu’un qui l’a fait marché et qui peut attester que c’est utilisable.

  Ou le mettre dans bonux ou un autre plugin en rodage...

• unable to compile ffmpeg bohr on ubuntu 14.04 32bit

  13 avril 2015, par Hahn

  I’m developing an application to capture video from webcam and stream it to Android. I’m using ffmpeg latest release - 2.5.2 "Bohr" on Ubuntu 14.04 32bit and using Eclipse as IDE.

  I’m receiving this error when compiling :

  g++ -L/usr/local/lib -L/home/idanhahn/ffmpeg/ffmpeg_build/lib -o "camera"  ./src/.metadata/.plugins/org.eclipse.cdt.make.core/specs.o  ./src/CameraSec.o ./src/camera.o  ./.metadata/.plugins/org.eclipse.cdt.make.core/specs.o   -lz -lswscale -lopencv_core -lavcodec -lavutil -lpthread -lboost_thread -lboost_system -lboost_date_time -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_features2d -lopencv_calib3d -lopencv_objdetect -lopencv_contrib -lopencv_legacy -lopencv_flann -lavformat
  
  /usr/bin/ld: /home/idanhahn/ffmpeg/ffmpeg_build/lib/libavformat.a(http.o): undefined reference to symbol 'inflateInit2_'
  
  /usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libz.so: error adding symbols: DSO missing from command line
  
  collect2: error: ld returned 1 exit status

  I’ve linked avformat (and other ffmpeg related libs).

  I’ve tried the following :

  1. Linked libz.
  2. Tried to recompile using instructions from here : http://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

  What could be the problem ?
  Why linker points to i686 and then go back to i386 ?