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• Concat Command Issue in FFMPEG

  19 septembre 2024, par Vinesh Chauhan

  i am trying to Build a FFMPEG command that accept 4 input Videos and generate the output video with 2x2 Grid also play all those video one after another one. so Archive this I have pass lavfi 4 inputs with duration with size. then I have passed 4 input videos. then I have first generate thumbnail of those videos, so what I am gonna do is I place first video and second thumbnail in hstack, third thumbnail and fourth thumbnail in hstack the both hstack output in vstack. i will do it this 4 times for all videos respectively and then lastly I am trying to contact all those video in one. but I am getting overflow buffer warnings (as shown in image 1). and also getting not a proper video output(as link 1). then I try to create 4 videos using map to test whether its a stack issue or not so I have successfully create 4 videos and its working fine as expect but in 4 output files. i want it in one and also I want it in one command execution I don't want to execute multiple command for this.

  


  the code that generate 4 output videos with is working fine

  


  ffmpeg -y -f lavfi -t 00:00:37.000 -i color=black:s=360x360 -f lavfi -t 00:01:15.000 -i color=black:s=360x360 -f lavfi -t 00:00:14.000 -i color=black:s=360x360 -f lavfi -t 00:00:50.000 -i color=black:s=360x360 -i instagram_1.mp4 -i instagram_2.mp4 -i instagram_3.mp4 -i instagram_4.mp4 -filter_complex "[4:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_1];[5:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_2];[6:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_3];[7:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_4];[4:v]scale=-2:360:force_original_aspect_ratio=decrease[sc1];[0:v][sc1]overlay=(W-w)/2:(H-h)/2[ovv1];[5:v]scale=-2:360:force_original_aspect_ratio=decrease[sc2];[1:v][sc2]overlay=(W-w)/2:(H-h)/2[ovv2];[6:v]scale=-2:360:force_original_aspect_ratio=decrease[sc3];[2:v][sc3]overlay=(W-w)/2:(H-h)/2[ovv3];[7:v]scale=-2:360:force_original_aspect_ratio=decrease[sc4];[3:v][sc4]overlay=(W-w)/2:(H-h)/2[ovv4];[0:v][thumb_1]overlay=(W-w)/2:(H-h)/2[ov1];[1:v][thumb_2]overlay=(W-w)/2:(H-h)/2[ov2];[2:v][thumb_3]overlay=(W-w)/2:(H-h)/2[ov3];[3:v][thumb_4]overlay=(W-w)/2:(H-h)/2[ov4];[ov1][ov2]hstack[hs1];[ov3][ov4]hstack[hs2];[hs1][hs2]vstack[vs1];[vs1]split=4[vss1][vss2][vss3][vss4];[vss1][ovv1]overlay=0:0[final1];[vss2][ovv2]overlay=w:0[final2];[vss3][ovv3]overlay=0:h[final3];[vss4][ovv4]overlay=w:h[final4]" -map "[final1]" -t 00:00:37.000 outPut1.mp4 -map "[final2]" -t 00:01:15.000 outPut2.mp4 -map "[final3]" -t 00:00:14.000 outPut3.mp4 -map "[final4]" -t 00:00:50.000 outPut4.mp4 


  


  the command I am getting problem

  


  ffmpeg -y -f lavfi -t 00:00:37.000 -i color=black:s=360x360 -f lavfi -t 00:01:15.000 -i color=black:s=360x360 -f lavfi -t 00:00:14.000 -i color=black:s=360x360 -f lavfi -t 00:00:50.000 -i color=black:s=360x360 -i instagram_1.mp4 -i instagram_2.mp4 -i instagram_3.mp4 -i instagram_4.mp4 -filter_complex "[4:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_1];[5:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_2];[6:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_3];[7:v]select='eq(n\,0)',scale=-2:360:force_original_aspect_ratio=decrease[thumb_4];[4:v]scale=-2:360:force_original_aspect_ratio=decrease[sc1];[0:v][sc1]overlay=(W-w)/2:(H-h)/2[ovv1];[5:v]scale=-2:360:force_original_aspect_ratio=decrease[sc2];[1:v][sc2]overlay=(W-w)/2:(H-h)/2[ovv2];[6:v]scale=-2:360:force_original_aspect_ratio=decrease[sc3];[2:v][sc3]overlay=(W-w)/2:(H-h)/2[ovv3];[7:v]scale=-2:360:force_original_aspect_ratio=decrease[sc4];[3:v][sc4]overlay=(W-w)/2:(H-h)/2[ovv4];[0:v][thumb_1]overlay=(W-w)/2:(H-h)/2[ov1];[1:v][thumb_2]overlay=(W-w)/2:(H-h)/2[ov2];[2:v][thumb_3]overlay=(W-w)/2:(H-h)/2[ov3];[3:v][thumb_4]overlay=(W-w)/2:(H-h)/2[ov4];[ov1][ov2]hstack[hs1];[ov3][ov4]hstack[hs2];[hs1][hs2]vstack[vs1];[vs1]split=4[vss1][vss2][vss3][vss4];[vss1][ovv1]overlay=0:0[final1];[vss2][ovv2]overlay=w:0[final2];[vss3][ovv3]overlay=0:h[final3];[vss4][ovv4]overlay=w:h[final4];[final1][final2][final3][final4]concat=n=4:v=1:a=0[final]" -map "[final]" -t 00:02:56.000 outPutIMagesFinaLCheck.mp4   


  


  Link 1(output video that has issue)
https://zippyshare.day/c0vhq9MvIMUTb8i/file

  


• how to pass user input variable to ffmpeg in windows batch file

  7 décembre 2018, par lala

  Reffering to Answer here (Closest Search) i have in a batch file code(below). I tried every possible way to pass line1 value to text and it simply didn’t worked. clearly hardcoding text in ffmpeg line works. Any Ideas or Guideline.

  set /p dtp="DRAG A File:"
  
  set /p line1 = "Enter Top Text:"
  
  set /p line2 = "Enter Bottom Text:"
  
  ffmpeg -i %dtp% -filter_complex "[0:v]pad=iw:ih+100:0:(oh-ih)/2:color=white, drawtext=text='%%line1%%':fontfile=Mosk Bold 700.ttf:fontsize=24:fontcolor=black:x=(w-tw)/2:y=(50-th)/2, drawtext=text=`%line2%`:fontfile=Mosk Bold 700.ttf:fontsize=24:fontcolor=black:x=(w-tw)/2:y=h-25-(th/2)" %dtp%_tweaked.mp4

• sh file imagemagick modification

  16 avril 2013, par Love

  I have an .sh script that generate thumbnail sprites' images from video. The below codes in the script will output the image similar this : http://s1-www.ltvimg.com/cdn/farfuture/7NO-FuBvaWJK_v34cJrAmHi6L3ywPn1YtImQNzXgTic/mtime:1362848979/sites/default/files/tooltipthumbs-sprite.jpg

  For now, the dimension of each thumbnail is 108x60, maximum 25 thumbnails(5x5) per image and per image dimension is 540x300. The thumbnail is capture every second of the video, which mean if i have a 75 seconds of video, it will output 75 thumbnails with 3 images.

  What i need now, i want the script generate only 1 image per video. Which mean 75 thumbnails all in 1 image. What i need to change on the below codes to make this works ?

  mogrify -verbose -resize 108x60 -gravity center -quality 100 -background black 
  
  -extent 108x60 MONTAGE*.png
  
  
  
  numimages=`ls -1 *.png | wc -l | cut -d " " -f1`
  
  
  
  montage -verbose MONTAGE*.png -geometry +0+0 -tile 5x5 -quality 100 -background 
  
  black "$basename"-%04d.jpg
  
  
  
  mogrify -verbose -resize 540x300 -gravity north -extent 540x300 -quality 100 
  
  -background black "$basename"-*.jpg