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• How do I merge video, audio and subtitles together in ffmpeg via python ?

  5 juin 2024, par user14609171

  I have been trying to merge a video, audio and subtitle stream in ffmepg but, since it is my first time trying it out, I am having a bit of trouble figuring out how to do so.

  


  Goal : The output I am looking for a the video in the background with the subtitles overlayed in the center of the screen with the audio from the input stream, which in this case is an mp3 file.

  


  These are my input streams :

  


  video_input_stream = ffmpeg.input(background_video)
audio_input_stream = ffmpeg.input(audio)
subtitle_input_stream = ffmpeg.input(subtitle_file)


  


  and I have successfully added sound to video like so :

  


  ffmpeg.concat(video_with_subtitles, audio_input_stream, v=1, a=1)



  


  and also subtitles like so :

  


  ffmpeg.output(video_with_subtitles, output_video, vf=f"subtitles={subtitle_file}")


  


  but not at the same time !

  


  Thank you for helping.

  


• Ubuntu ffmepg watermark position

  8 juillet 2015, par Arnas Pečelis

  so I have command :

  ffmpeg -i prepared/video.mp4 -i units/video_watermark.png -filter_complex overlay=main_w-overlay_w-10:main_h-overlay_h-10 -codec:a copy moved/video_test.mp4

  which should describe watermark position on bottom right but the watermark appears on the bottom center. what i’m doing wrong ?

  also I tried this command :

  ffmpeg -i prepared/video.mp4 -vf "movie=units/video_watermark.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" moved/output.mp4

  but with it watermark was not added, video was corrupted becouse of response :

  [aac @ 0x3556540] The encoder ’aac’ is experimental but experimental codecs are not enabled, add ’-strict -2’ if you want to use it.

  where is the clue ?

• MoviePy Error : The system cannot find the file specified

  4 juillet 2017, par JohnSmithy1266

  I’m getting the error in the title when trying to run the example code below on Windows 10/Python 3.6.1/Sublime Text Editor 3. I made sure to set my MAGICK_HOME environment variable to point to where I manually installed ImageMagick. I made sure to only have 1 version of ImageMagick installed. I made sure FFMPEG, Numpy, imageio, Decorator, and tqdm were all installed.

  Yes, the file "vidclip.mp4" exists. The desired behavior here is to simply clip the video and add text to the center as per the example on the github page, i.e. to simply run the code successfully.

  Does anyone know what might be wrong ?

  Example code from github :

  from moviepy.editor import *
  
  
  
  video = VideoFileClip("vidclip.mp4").subclip(7,64)
  
  
  
  # Make the text. Many more options are available.
  
  txt_clip = ( TextClip("Ken Block who?",fontsize=70,color='white')
  
               .set_position('center')
  
               .set_duration(10) )
  
  
  
  result = CompositeVideoClip([video, txt_clip]) # Overlay text on video
  
  result.write_videofile("vidclip_edited.webm",fps=25) # Many options...

  The full error trace :

  Traceback (most recent call last):
  
    File "C:\Users\av\AppData\Local\Programs\Python\Python36\lib\site-packages\moviepy\video\VideoClip.py", line 1220, in __init__
  
      subprocess_call(cmd, verbose=False )
  
    File "C:\Users\av\AppData\Local\Programs\Python\Python36\lib\site-packages\moviepy\tools.py", line 42, in subprocess_call
  
      proc = sp.Popen(cmd, **popen_params)
  
    File "C:\Users\av\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 707, in __init__
  
      restore_signals, start_new_session)
  
    File "C:\Users\av\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 990, in _execute_child
  
      startupinfo)
  
  FileNotFoundError: [WinError 2] The system cannot find the file specified
  
  
  
  During handling of the above exception, another exception occurred:
  
  
  
  Traceback (most recent call last):
  
    File "C:\Users\av\Desktop\Desktop\Projects\Youtube\blender\test\testMoviePy.py", line 6, in <module>
  
      txt_clip = ( TextClip("Ken Block who?",fontsize=70,color='white')
  
    File "C:\Users\av\AppData\Local\Programs\Python\Python36\lib\site-packages\moviepy\video\VideoClip.py", line 1229, in __init__
  
      raise IOError(error)
  
  OSError: MoviePy Error: creation of None failed because of the following error:
  
  
  
  [WinError 2] The system cannot find the file specified.
  
  
  
  .This error can be due to the fact that ImageMagick is not installed on your computer, or (for Windows users) that you didn't specify the path to the ImageMagick binary in file conf.py, or.that the path you specified is incorrect
  
  </module>