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• Combining two FFMPEG filters into single command

  31 mai 2022, par shawn

  I would like to combine two filters and commands to a single ffmpeg command. What I want to achieve is overlay a static image on the video and draw a 90 degree rotated text as well.

  


  Can anyone help with this ?

  


  ffmpeg -y -i input.mp4 -i line.png -filter_complex "[0:v][1:v] overlay=105:625" -c:a copy output_video.mp4


  


  ffmpeg -y -i input.mp4 -i line.png -filter_complex "color=black:100x100[c];[c][0]scale2ref[ct][mv];[ct]setsar=1,split=2[t1][t2];


[t1]drawtext=fontfile=/Library/Fonts/GenerisSansW01Heavy.ttf:
text=$TITLE:line_spacing=10:fontsize=23:fontcolor=white,split[text1][alpha1];
[text1][alpha1]alphamerge,rotate=270*PI/180:ow=rotw(270*PI/180):oh=roth(270*PI/180):c=black@0[txta1]; 

[t2]drawtext=fontfile=/Library/Fonts/GenerisSansW01Heavy.ttf:
text=$CONTENTS:line_spacing=0.5:fontsize=18:fontcolor=white,split[text2][alpha2];
[text2][alpha2]alphamerge,rotate=270*PI/180:ow=rotw(270*PI/180):oh=roth(270*PI/180):c=black@0[txta2]; 


[mv][txta1]overlay=x='min(0,-H*sin(270*PI/180))+40':y='min(0,W*sin(270*PI/180))+751':shortest=1[mv1]; 
[mv1][txta2]overlay=x='min(0,-H*sin(270*PI/180))+138':y='min(0,W*sin(270*PI/180))+752':shortest=1" -c:a copy output_video.mp4


  


• FFMPEG - make a stable & zero-padded frame counter

  2 octobre 2020, par L0Lock

  I use FFMPEG to print a frame counter on my videos, but I have two issues :

  


  

  


  

  1. The text stutters

  


  2. I'd like to have the possibility to have the number zero-padded (I.E. write 001 002 003 instead of 1 2 3).

  


  


  Code :

  


  @echo off
:again

cd /D %~p1

ffmpeg ^
    -i "%~nx1" ^
    -vf "drawtext=fontfile=arialbd.ttf: text='Frame \: %%{n}': start_number=1: x=(w-tw)/2: y=h-(2*lh): fontcolor=white: fontsize=40: box=1: boxcolor=black@0.4: boxborderw=8" ^
    -c:a copy ^
    "%~p1%~n1_framenumbered.mov"
if NOT ["%errorlevel%"]==["0"] goto:error
echo [92m%~n1 Done![0m

shift
if "%~1" == "" goto:end
goto:again

:error

echo [93mThere was an error. Please check your input file or report an issue on github.com/L0Lock/FFmpeg-bat-collection/issues.[0m
pause
exit 0

:end

cls
echo [92mEncoding succesful. This window will close after 10 seconds.[0m
timeout /t 10


  


  Solutions :

  


  

  • use `text='Frame : %eif:n:d:3' to get the zero-padded frame count (thanks to this answer)

  


  • use a monospace font (courrier new is common on Windows)

  


  • the script was failing to load the font, use the full path instead but without the drive (thanks to this answer) :

    

    • Do : /Windows/Fonts/courbd.ttf

    


    • Don't C:/Windows/Fonts/courbd.ttf nor use \

    


    


  


  


• How to add text on a video using FFMPEG in android

  19 juin 2014, par Divya Motiwala

  I am trying to add text to the video but not getting the syntax right.
  I am forming the command as a string (given below) :

   String concatePath = "data/data/"+ this.getPackageName() +"/cache/ffmpeg" + " -y -i " +
  
                   Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)+"/Camera/wildlife.mp4 -vf " +
  
                   "drawtext=fontfile=/system/fonts/DroidSans.ttf\\: text='this' \\:x=(w-text_w)/2\\:y=H-60 \\:fontcolor=white \\:box=1 -y "
  
                   + Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC)+"/test/output_text.mp4";

  So the command that gets executed is :

  data/data/com.example.videomerger/cache/ffmpeg -y -i /storage/emulated/0/DCIM/Camera/wildlife.mp4 -vf drawtext=fontfile=/system/fonts/DroidSans.ttf\: text='this' \:x=(w-text_w)/2\:y=H-60 \:fontcolor=white \:box=1 -y /storage/emulated/0/Music/test/output_text.mp4

  It is giving the error :

  Unable to find a suitable output format for ’text=’this’’
  , text=’this’ : Invalid argument

  How to solve it ?

  Update : I could add text to the video but it takes only single words. When i give space for multi words, it considers it as an invalid argument ! How can i add space to it ?