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• What causes an this error when using FFMPEG in Python ?

  30 mai 2022, par Vesero

  I'm trying to convert MP3 to OGG but it doesn't work. What's the problem ?
The paths to the audio files are correct. "ffmpeg.exe" is in the script directory.

  


  Code snippet from the program :

  


  def ProcessAudio(audioPath, destPath):
   inp = ffmpeg.input(audioPath)
   au = inp.audio
   stream = ffmpeg.output(au, destPath)
   ffmpeg.run(stream)

def Convert(listofmusic, pathofmsc, pathofdest, append):
   count = 0
   if len(listofmusic) >= 100:
      for i in range(100):
         count += 1
         out = mscPath + "/" + pathofdest + "/" + "track" + str(count) + ".ogg"
         print(out)
         ProcessAudio(audioFolder + "/" + listofmusic[i], out)
         break
      count = 0
   elif len(listofmusic) < 100:
      for i in range(len(listofmusic)):
         count += 1
         mscP = mscPath.replace("/", "\\")
         out = mscP + "\\" + pathofdest + "\\" + "track" + str(count) + ".ogg"
         print(out)
         audioProc = audioFolder + "\\" + listofmusic[i]
         print(audioProc)
         ProcessAudio(audioProc, out)
         break
      count = 0


  


  However, this code works fine :

  


  import ffmpeg

inputfile = ffmpeg.input("example.mp3")
iAudio = inputfile.audio
stream = ffmpeg.output(iAudio, "example.ogg")
ffmpeg.run(stream)


  


  Error :

  


  Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Santila\AppData\Local\Programs\Python\Python310\lib\tkinter\__init__.py", line 1921, in __call__
    return self.func(*args)
  File "C:\Users\Santila\Desktop\MSC_Audio_Converter.py", line 75, in pressed
    Convert(musicList, mscPath, oggFolder, cbVar.get())
  File "C:\Users\Santila\Desktop\MSC_Audio_Converter.py", line 52, in Convert
    ProcessAudio(audioProc, out)
  File "C:\Users\Santila\Desktop\MSC_Audio_Converter.py", line 32, in ProcessAudio
    ffmpeg.run(stream)
  File "C:\Users\Santila\AppData\Local\Programs\Python\Python310\lib\site-packages\ffmpeg\_run.py", line 325, in run
    raise Error('ffmpeg', out, err)
ffmpeg._run.Error: ffmpeg error (see stderr output for detail)


  


• Set video's metadata by Python

  17 février 2023, par Anton Bohatov

  I need to upload the video to Google Photos. There is no way to set a date in request, only by metadata. I made a test by setting the date manually (windows, file options) and it works in Google Photos. So, I don't understand how to set it by Python. I found the needed value, but I can't set it.

  


  import ffmpeg

file_path = r"test.MP4"
vid = ffmpeg.probe(file_path)

vid['streams'][0]['tags']['creation_time']


  


  Result '2020-11-01T20:07:09.000000Z'

  


  I tried vid['streams'][0]['tags']['creation_time'] = '2015-11-01T20:07:09.000000Z'

  


  But nothing changes. Please help.

  


  Note that this is about the video file's metadata, NOT WINDOWS DATA

  


• Python FFmpeg query rtsp too slow

  6 février 2020, par CDY

  Currently, I am trying to use python with FFmpeg to query rtsp data which the original format is h264.

  The information of the live stream video is, fps:29 ; resolution : 1280*720.

  I wish that I can query the data as the same format "h264" and put into a python queue in order to the future use.

  Here is my code :

  class CCTVReader(threading.Thread):
  
  def __init__(self, queue, URL, fps=29):
  
      super().__init__()
  
      self.queue = queue
  
      self.command = ["ffmpeg",  "-y",
  
                      "-hwaccel",  "nvdec",
  
                      "-c:v",  "h264_cuvid",
  
                      "-vsync", "0",
  
                      "-max_delay", "500000",
  
                      "-reorder_queue_size", "10000",
  
                      "-i",  "rtsp://xxx.xxx.xxx.xxx:xxx/Streaming/Channels/101?transportmode=multicast",
  
                      "-pix_fmt", "yuv420p",
  
                      "-preset", "slow",
  
                      "-an", "-sn",
  
                      "-vf", "fps=29",
  
                      "-"]
  
  def run(self):
  
      pipe = sp.Popen(self.command, stdout = sp.PIPE, bufsize=1024**3, shell=True)
  
      timer = time.time()
  
      counter = 0
  
      while True:
  
          self.queue.put(pipe.stdout.read(int(1280*720*6//4)))

  However, after I run this program about 10 second, my console shows the warning message :

  [rtsp @ 0000020be0fbb9c0] max delay reached. need to consume packet
  
  [rtsp @ 0000020be0fbb9c0] RTP: missed 127 packets

  It seems like my command doesn’t type appropriately.

  Could you kindly give me some suggestion about how to deal with this problem ?

  Thank you very much