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• Error due to calling audio_loop in moviepy

  9 juin 2020, par Noster

  to have music play in the background of a video that has its own audio, and loop until the end of the video i am using the following code. however audio_loop is causing and error after the video is done writing. the song is 67 seconds long, and if i set duration = 66 or below I get no error but any time over causes an error.

  



  final_clip = concatenate_videoclips([*vidclip], method='compose')

count=0
for file in os.listdir(TO):
    if file.endswith('.mp4'):
        count+=1

finalClipName = "{}Final.mp4".format(count)
music = AudioFileClip('song.mp3')
audio_background = afx.audio_loop(music, duration = final_clip.duration)#ERROR
final_audio = CompositeAudioClip([final_clip.audio, audio_background])
final_clip = final_clip.set_audio(final_audio)
final_clip.write_videofile(finalClipName, fps=10)


  



  The error at question

  



  Exception ignored in: <function at="at" 0x0000026346d3baf8="0x0000026346d3baf8">&#xA;Traceback (most recent call last):&#xA;  File "C:\Users\Eric\Projects\Videdit\venv\lib\site-packages\moviepy\audio\io\readers.py", line 254, in __del__&#xA;    self.close_proc()&#xA;  File "C:\Users\Eric\Projects\Videdit\venv\lib\site-packages\moviepy\audio\io\readers.py", line 150, in close_proc&#xA;    self.proc.terminate()&#xA;  File "C:\Users\Eric\AppData\Local\Programs\Python\Python37\lib\subprocess.py", line 1314, in terminate&#xA;    _winapi.TerminateProcess(self._handle, 1)&#xA;OSError: [WinError 6] The handle is invalid&#xA;</function>

  


• problem with changing the frames in an video with opencv

  5 septembre 2023, par Avizipi

  I have a code that runs in the last few months without any problem. The code shows an image from a video with extra data from the relevant db. using the keyboard you can jump around some frames and get better insights. However, in the last week changing the frame of the video stopped working.

  


  I built a small script that show the problem.

  


  import cv2

vid_cap_reader_path = "vid_230830_122746_C.avi"
cap_rgb = cv2.VideoCapture(vid_cap_reader_path)

k = 0
while 1:
    if k == ord("q"):
        break
    if k == ord("b"):
        before = cap_rgb.get(cv2.CAP_PROP_POS_FRAMES)
        cap_rgb.set(cv2.CAP_PROP_POS_FRAMES, before + 30.0)
        after = cap_rgb.get(cv2.CAP_PROP_POS_FRAMES)
        print(f"before = {before} after = {after}")
    ret, img = cap_rgb.read()
    if ret:
        cv2.imshow("bla", img)
        k = cv2.waitKey(0)
    else:
        break


  


  This is what is printed to the terminal :

  


  [mpeg4 @ 0x1d87400] warning: first frame is no keyframe
before = 36.0 after = 0.0
before = 67.0 after = 0.0
[mpeg4 @ 0x1d87400] warning: first frame is no keyframe
before = 40.0 after = 0.0
[mpeg4 @ 0x1d87400] warning: first frame is no keyframe


  


  The video itself doesn't "jump" for the next frame as expected and also most of the properties that opencv have return 0. I tested also CAP_PROP_FRAME_COUNT, and CAP_PROP_POS_MSEC without any lack, although the msec flag did give non-zero results which make no sense.

  


  It is also important to mention that I am building this application in a docker file and I am not using a specific version for my requirements. The tests here are with opencv-python==4.7.0.68. Also, the videos are working fine while playing them on VLC.

  


  I was looking around the net for a similar problem from the recent time and didn't find much except this github issue that may be similar. I started to downgrade opencv one by one without any luck.

  


  Maybe someone here can help with this issue, or give me a lead to doing something different.

  


• Simple mp3 audio extract from video (mp4/avi/webm etc) using Python script (moviepy)

  28 mai 2016, par Bam

  I’m trying to run this very simple python script to extract mp3 from a video.

  Here’s the code :

  import moviepy.editor as mp
  
  clip = mp.VideoFileClip("test.webm")
  
  clip.audio.write_audiofile("test.mp3")

  I’m running this on a Mac and moviepy/ffmpeg seem to be correctly installed. I get the following error :

  Traceback (most recent call last):
  
    File "/Users/XXXXXX/Code/python/000014 - convert mp4 to mp3.py", line 2, in <module>
  
      clip = mp.VideoFileClip("test.webm")
  
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/moviepy/video/io/VideoFileClip.py", line 55, in __init__
  
      reader = FFMPEG_VideoReader(filename, pix_fmt=pix_fmt)
  
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/moviepy/video/io/ffmpeg_reader.py", line 32, in __init__
  
      infos = ffmpeg_parse_infos(filename, print_infos, check_duration)
  
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/moviepy/video/io/ffmpeg_reader.py", line 250, in ffmpeg_parse_infos
  
      if "No such file or directory" in lines[-1]:
  
  IndexError: list index out of range
  
  </module>

  The source file is in the same directory as the code is being run in.

  The same code ran fine on a Windows pc.

  Any ideas ? thanks