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• fade In and out effect on a text using ffmpeg in nodejs

  21 septembre 2020, par sankar barman

  There are many examples for command line interface, but what i need is to achieve by having an object property with filter name and options. No solution have been found for this.
Here is the code sample. Everything is working fine, but don't know the syntax for fade In and fade out. Please do help in this. Thanks in advance.

  


  ffmpeg("tmp/" + file.name).videoFilters({ filter: 'drawtext',
options: { 
  fontfile: 'Lucida Grande.ttf',
  x: 50,
  y:20,
  text: 'some title',
  fontsize: '56',
  fontcolor: 'white',
  enable: 'between(t,10,20)'
  fade: ?
}})


  


• FFMpeg : how to use between() to select last second ?

  13 mai 2019, par rcpinheiro

  I’m trying to apply a caption using drawtext that should disappear one second before the video end :

  ffmpeg -i input.mp4 -vf "drawtext=enable='between(t,0,5)':fontfile=font.ttf:text='Some caption':x=60:y=640:fontsize=40:fontcolor=#f0f0f0@0.9" -vcodec libx264 -crf 27 -preset ultrafast -strict -2 -acodec copy output.mp4

  The problem is that I don’t know the video length beforehand. I’ve tried using ’between(t,0,-1)’ but it doesn’t work, the caption never shows up.
  Anyone knows if is there a way to do this without having to open the video first to check length and only after that draw the caption ?
  Thanks in advance !

• Ffmpeg desyncing with FFSource

  28 janvier 2014, par Ismaw34

  i don't know how much time i spent doing the batch to stream with twitch, i made a batch file for streaming, but the audio and the video are desyncing over time.

  The batch im using is this :
  http://pastebin.com/NEz2Gvyj

  I dont know if my pc is too old for streaming or if is something else.

  With XSplit the quality is pixelated a lot.
  Can't use OBS.
  With FFSplit is the same as above.

  Thanks in advance.
   Ismaw34

  EDIT :
  It appears that the new batch is working now. Thanks for all the visits, you can use the batch too.