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• FFmpeg : high quality animated GIF ? [closed]

  26 juin, par David Hope

  I'm generating animated a GIF from a video on my server.

  


  The generated GIF is not really high quality and it looks like the pixels are huge.

  


  Example :

  


  

  


  This is how I generate the GIF :

  


  /usr/bin/ffmpeg -i video.mkv -vf scale=500:-1 -t 10 -r 10 image.gif


  


  I did a search on Google and came across this :

  


  /usr/bin/ffmpeg -i video.mkv -r 20 -f image2pipe -vcodec ppm - | convert -delay 5 - output.gif


  


  But the command above doesn't do anything and no output.gif is being generated at all.

  


  There are some tutorials that I came across but none of them worked for me and some of them involve using ImageMagick which I dont have access to.

  


  Could someone please let me know if there is a clear way to generate a high-quality GIF using FFmpeg ?

  


• Fastest way to create animated gifs from mp4

  23 mai 2017, par stinkypyper

  I have to batch process a very high number(200,000+) of short mp4s(less then 10s) into animated gifs. I think I have tried every possible command line way of doing it, but it still takes too long to produce quality gifs. Currently I use ffmpeg to unpack image(jpg) frames, and image magick convert to assemble them. It produces high quality gifs, but takes too long and uses too much memory and CPU, even with tweaking with the -limit memory and map limits.

  I have also tried creating animated gifs directly using ffmpeg, but the quality is terrible at best. Also, I have tried using gifsicle, which does seem fast, but it only takes gifs as inputs, and using ffmpeg to generate them produces poor quality gifs.

  Does anyone have some command line recipes for fast high quality gif creation ?

• ffmpeg loop sound in part of video

  22 juin 2017, par djib

  I’m trying to concatenate a few inputs, and loop a sound during the time of one input.
  My inputs are :

  • intro.mp4
  • jpg suite in "pics" folder -> pics/%04d.jpg
  • loop.mp3
  • outro.mp4

  What i want to achive :

  

  What i have so far :

  ffmpeg -y -i intro.mp4 -r 25 -i "pics/%04d.jpg" -i outro.mp4 -i loop.mp3 -filter_complex
  
  "[0:v:0] [0:a:0] [1:v:0] [3:a:0] [2:v:0] [2:a:0] concat=n=3:v=1:a=1 [v] [a]" -map "[v]"
  
  -map "[a]" -c:v libx264 -pix_fmt yuv420p -profile:v baseline -level 3.0 -crf 20 -r 25
  
  -movflags +faststart -c:a aac -b:a 192k output.mp4

  But that does not loop "loop.wav". I’v tried "-loop 1" before "-i loop.mp3" but that gives me this error : "Option loop not found."

  ffmpeg version : 20170620-ae6f6d4-win64-static