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• The formula runs text, from bottom to top, it does not end when there are still letters

  27 février 2019, par Monso

  I have 1 txt file. In the file there is a word, but my formula "y=h-40*t" has a problem, it does not end when the text runs out, the text is not over but it has ended, I want to speed 40 and size The word 120, can you help me find the correct recipe ? Thanks

    ffmpeg -loop 1 -y -i a.jpg -i b.mp3 vf "drawtext="fontsize=120:fontfile=arial.ttf:textfile=1.txt:y=h-40*t"" 
  
   scale=852x480 setsar=1:1  -vcodec libx264 -b:v 1000k -preset superfast 3.mp4

• Can I use FFMPEG to losslessly merge three audio and video files and keep all of the streams for an. mp4 file ?

  26 décembre 2022, par AmalgamAsh

  I regularly use video editing software and use a few lines of FFMPEG to do some work on the files before I get to them.

  


  I don't understand FFMPEG that well, and am trying to see if it is possible to do what I want, which is create a single video file that has two video streams (from two synced sources - for example, screen capture and facecam footage from another device).

  


  What I usually end up with after recording is this :

  


  File 1 :

  


  

  • Screencapture video

  


  • PC default audio

  


  


  File 2 :

  


  

  • Face cam footage

  


  • Face cam audio capture

  


  


  File 3 :

  


  

  • Microphone audio captured independently

  


  


  and what I would like to end up with is this :

  


  File 1 :

  


  

  • facecam video

  


  • screencapture video

  


  • PC default audio

  


  • Face cam audio capture

  


  • Microphone audio

  


  


  I'd really like to have this in an .mp4 and then, hopefully, adobe premiere can open it and display the separate video tracks. As for the video footage, I would be resizing the face cam footage, placing it "on top of" the screen capture layer in premiere, and syncing the audio sources before getting rid of the face cam audio. As such, I don't want to display the videos side-by-side or vertically — just overlaid (I guess if the video result was viewed as-is, the viewer would only be able to see the "top" layer, right ? But this is fine, as I'd be using this file to edit a new video).

  


  I'm willing to try and extrapolate any examples anyone can give me of how to do this ; I've tried altering and playing with other FFMPEG examples here and have gotten the simplest ones to work but so far have had no luck with this more complex process.

  


  Here is the code I've tried to use, and endless variations of it, to no avail.
I am sure the mistake is glaring at me clearly but I just haven ;t been able to wrap my head around the simplest of explanations that explain how to use FFMPEG.
used in conjunction with batch :

  


  ffmpeg -i %file1% -i %file2% -i %file3% -map 0:v -map 1:a:0 -map 0:a:0 -map 2:v -c copy %outputfile%


  


• Evolution #4699 : CVT multi-étapes : un moyen de forcer la validation finale (passer à traiter) ?

  22 mars 2021, par cedric -

  Corrigé par https://git.spip.net/spip/spip/commit/8bdd42a36f72187210281653c7c7a2d9bdfed7a8
  On pouvait poster dans aller_a_etape un numero d’etape, mais cela ne marchait que si c’était un retour en arrière.

  Avec le patch, cela permet potentiellement d’aller à la validation finale, en indiquant dans aller_a_etape un nombre plus grand ou égal que le nombre d’étapes, mais attention : il faudra que chaque étape soit valide selon chaque fonction verifier().
  Si une des étapes n’est pas valide, le formulaire s’arrêtera à cette étape.