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• How to append new images into a video file which already exists using ffmepg

  28 juin 2014, par user3786605

  Is there any way to append new images into a video file using FFMpeg command line ?

  Thanks in advance,

• Crossfade Animation with multiple Images using Ffmpeg

  15 avril 2022, par Vivek Thummar

  I'm creating video with Multiple images using Ffmpeg and i'm using given link -

  


  (Remember most important thing is All the images have different sizes)

  


  https://superuser.com/a/834035/1243959

  


  Now First of all i'm creating video with fade in/out animation and for that i'm using 3rd code with title For input images with varying or arbitrary sizes and it works well -

  


  ffmpeg \
-loop 1 -t 5 -i input0.png \
-loop 1 -t 5 -i input1.png \
-loop 1 -t 5 -i input2.png \
-loop 1 -t 5 -i input3.png \
-loop 1 -t 5 -i input4.png \
-filter_complex \
"[0:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1,fade=t=out:st=4:d=1[v0]; \
 [1:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1,fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v1]; \
 [2:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1,fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v2]; \
 [3:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1,fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v3]; \
 [4:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1,fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v4]; \
 [v0][v1][v2][v3][v4]concat=n=5:v=1:a=0,format=yuv420p[v]" -map "[v]" out.mp4


  


  but when i want to create Cross Fade animation using given command with the title MP4 output in Cross fade section,in output video,portrait images are fits into video,but square and landscape images are getting cropped (@llogan has specified that if images have different sizes than we have to use same command which is used for fade in/out) -

  


  ffmpeg \
-loop 1 -t 5 -i 1.png \
-loop 1 -t 5 -i 2.png \
-loop 1 -t 5 -i 3.png \
-loop 1 -t 5 -i 4.png \
-loop 1 -t 5 -i 5.png \
-filter_complex \
"[1]format=yuva444p,fade=d=1:t=in:alpha=1,setpts=PTS-STARTPTS+4/TB[f0]; \
 [2]format=yuva444p,fade=d=1:t=in:alpha=1,setpts=PTS-STARTPTS+8/TB[f1]; \
 [3]format=yuva444p,fade=d=1:t=in:alpha=1,setpts=PTS-STARTPTS+12/TB[f2]; \
 [4]format=yuva444p,fade=d=1:t=in:alpha=1,setpts=PTS-STARTPTS+16/TB[f3]; \
 [0][f0]overlay[bg1];[bg1][f1]overlay[bg2];[bg2][f2]overlay[bg3]; \
 [bg3][f3]overlay,format=yuv420p[v]" -map "[v]" -movflags +faststart out.mp4


  


  But I don't know exactly what to do and I think I have to first fit the images in a certain ratio like 1280 * 720, by which all the images will be of same size and then the animation should be applied to those images and may be different solution can work too but right now I'm confused about what to do because I've tried a lot of solutions like scaling images and some other attempts and not a single solution worked (maybe I didn't even try right)..

  


  if SAR and DAR can help than they are as below
(I don't know difference between these variables) :

  


  SAR 1:1 / DAR 197:295
SAR 1:1 / DAR 2:3
SAR 96:96 / DAR 16:9
SAR 1:1 DAR / 540:961
SAR 1:1 DAR / 2567:3113


  


  Any help will be appreciated..Thank you !

  


• Anomalie #3095 (Nouveau) : Le filtre |image_renforcement ne préserve pas la transparence des images

  15 novembre 2013, par charles razack

  Le filtre image_renforcement applatit les images PNG transparentes, et ce quelque soit la méthode de fabrication de vignette utilisée.

  Testé avec SPIP 3.0.13, PHP 5.4.9, Imagick 3.1.0