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• Create video from images, add audio and animation within images without FFMPEG in Android

  28 février 2017, par Vivek Bhatt

  I want to create a video from multiple images without using FFMPEG in Android. Also i have to multiple audios over it. And at last there should be some animation within each images. I have tried this using FFMPEG, but it is taking hell lot of time, let say , 4-5 min for 10 photos. Is there any other way for this or any efficient way ?

  There is 3 way process.

  1. First i create video from each image with audio and added text.
  2. Then i concatenate all the videos into a single video.
  3. At last, i add a background audio to the concatenated video.

  I am sharing the commands here :

  1.
  String[] cmds = "-y"
  , "-r", "1", "-vcodec", "mjpeg" ,"-loop", "1", "-t", "1"
  , "-i", image
  , "-i", audio
  , "-vf"
  , "zoompan=z=’if(lte(zoom,1),1.1,max(1.001,zoom-0.0015))’:d=125,drawbox=y=ih/PHI:color=black@0.4:width=iw:height=120:t=max,drawtext=fontfile=/storage/emulated/0/ffmpeg/font.ttf:text="+text+":fontcolor=white:fontsize=60:x=(w-tw)/2:y=(h/PHI)+th"
  , "-c:v", "libx264"
  , "-preset", "ultrafast", "-t", "5", "-c:a", "aac", "-b:a", "128k", "-pix_fmt", "yuv420p"
  , "video1.mp4" ;

  2.

  String cmd = "-y -i video1.mp4 -i video2.mp4 -i video3.mp4 -filter_complex concat=n=3:v=1:a=1 -preset ultrafast concat_video.mp4 ;

  3.

  cmd = "-y -i bg_audio.mp3 -i concat_video.mp4 -shortest -preset ultrafast -filter_complex [a1][a2]amerge,pan=stereo:c0

• Losing video when splitting mpg from middle [migrated]

  12 avril 2014, par ARip1979

  Very new to ffmpeg so bear with me.

  I'm trying to split an mpg in two pieces. It's a 4m 36s video. I want the first piece to be 170s and the second to be the rest. I have tried a bunch of different methods.

  ffmpeg -i input.mpg -vcodec copy -acodec copy -ss 00:00:00 -t 00:2:50 output1.mpg
  
  ffmpeg -i input.mpg -vcodec copy -acodec copy -ss 00:02:50 output2.mpg
  
  
  
  ffmpeg -i input.mpg -t 170 -c copy output1.mpg -ss 170 -c copy output2.mpg

  And a bunch of others. Every thing I've tried gives me a great first output1.mpg but output2.mpg is always missing the video. The file is saved as .mpg but it is only audio.

  I found one option that said to try this for the 2nd piece.

  ffmpeg -ss 170 -i input.mpg -t 176 -c copy output2.mpg

  and that sometimes there are errors so to try :

  ffmpeg -ss 170 -i input.mpg -t 176 output2.mpg

  With the possibility that omitting '-c copy' might result in a good output.
  So the first one above with '-c copy' gave me the same result, no video. The second option resulted in video and audio but the video was severely degraded in quality.

  Can anyone help me ? Why do I keep losing the video on the 2nd piece. I'm a newb but this seems pretty straight forward.

  Thanks in advance !

• Functionallity (supposedly) of shutil.which("ffmpeg") with pyinstaller flag —windowed is use

  8 juin 2021, par vanilla

  I have a github project for my app Scout. I use pyinstaller to compile. I just added a feature that uses ffmpeg, and I use shutil.which() to see if it's installed in order to warn and disable the features using it.

  


  When I run it straight with python3 scout.py, or with virtually any other flags than--windowed, --no-console, it will return None even when I have ffmpeg. Before it returns /usr/bin/ffmpeg.

  


  Those flags make it so the app doesn't have a console in the background, not sure exactly what I can do about this. I have tried using some of these flags to solve the problem but pyinstaller doesn't seem to recognize them.

  


  I have also tried if os.system("ffmpeg -version") != 0:, but the same thing happens, it will return 0 for anything but the windowed version.

  


  Any help ?