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• is it possible to have other text blend effects in ffmpeg other than transparency ? eg multiply or difference

  26 mars 2023, par shelbypereira

  In ffmpeg it is straightforward using alpha to set a transparency when using drawtext, but is it possible to have more complex effects ? eg if I want to blend text using difference or multiply ?

  


  I am guessing it is not possible with drawtext directly is it possible to simulate this using other features of ffmpeg ?

  


  The blend functionality is extremely powerful :
https://trac.ffmpeg.org/wiki/Blend

  


  But I don't see how I can add text to a video with drawtext and use those blending options.

  


• undefined reference to `x264_encoder_open_125'

  1er juin 2021, par Vishal

  While installing ffmpeg on Ubuntu 12.04

  



  I am getting following error

  



  libavcodec/libavcodec.a(libx264.o): In function `X264_init':
/root/ffmpeg/libavcodec/libx264.c:492: undefined reference to `x264_encoder_open_125'
collect2: ld returned 1 exit status
make: *** [ffmpeg_g] Error 1


  



  I am following the instructions given at 
http://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide

  



  Do anyone have idea about this error ?

  


• Revision 30403 : Microformatage : ajout de la class ’photo’ sur l’avatar généré, qui ...

  1er août 2009, par romy@… — Log

  Microformatage : ajout de la class ’photo’ sur l’avatar généré, qui peut donc être utilisé dans une hCard personnelle, cf. : ​http://microformats.org/wiki/hcard-authoring-fr#Photographies