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• expected str, bytes or os.PathLike object, not NoneType for subprocess of ffmpeg

  15 janvier 2024, par ejmin ejoni

  I dont know much about ffmpeg, subprocess and its functions, im trying to take a screenshot form a video and save it at my other field of my model.
this is my model :

  


  class SubSong(models.Model):
song = models.ForeignKey(SongPage, on_delete=models.CASCADE, related_name='related_song')
create = jmodels.jDateField(auto_now_add=True)
user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='related_user')
video = models.FileField(upload_to='sub_video/',)
like = models.ManyToManyField(User, blank=True, )
total_like = models.PositiveIntegerField(default=0)
is_allowed = models.BooleanField(default=False)
image_sub = ThumbImage(upload_to='sub_songs/', default='1.jpg')

def __str__(self):
    return self.song.title


  


  and views.py

  


      if request.method == 'POST':
    authen(request)
    form = MyTryForm(request.POST, request.FILES)
    if form.is_valid():
        data = form.cleaned_data
        x = SubSong.objects.create(song_id=id,
                                   user_id=request.user.id,
                                   video=data['video'], )
        path = x.video.name
        out = path.replace('sub_video/', '').replace('mp4', 'jpg')
        z=subprocess.check_output(
            ffmpeg.input('media/' + path, ss='00:00:50').filter(
                'thumbnail').output('media/sub_songs/' + out, vframes=1).run(), text=True)
        x.image_sub=z
        x.save()
        messages.success(request, 'ویدیوی شما با موفقیت ارسال شد ، پس از بررسی منتشر خواهد شد')
        return redirect(request.META.get('HTTP_REFERER'))

    else:
        messages.error(request, 'ویدیوی شما بارگداری نشد')
        return redirect(request.META.get('HTTP_REFERER'))


  


  it can save the video and also default picture 1.jpg at image_sub. also it can save scrrenshot at the media/sub_song/.but my problem is that it gives me error :
expected str, bytes or os.PathLike object, not NoneType
how i should return the screen from subprocess to save it as my image_sub field ? and why do this error raise ? i dont want to see this error again

  


• checkasm/vf_eq : add test for vf_eq

  18 septembre 2019, par Ting Fu

  checkasm/vf_eq : add test for vf_eq
  Signed-off-by : Ting Fu <ting.fu@intel.com>
  
  Signed-off-by : Ruiling Song <ruiling.song@intel.com>
  

  • [DH] libavfilter/vf_eq.c
  • [DH] libavfilter/vf_eq.h
  • [DH] tests/checkasm/Makefile
  • [DH] tests/checkasm/checkasm.c
  • [DH] tests/checkasm/checkasm.h
  • [DH] tests/checkasm/vf_eq.c
  • [DH] tests/fate/checkasm.mak

• ffmpeg 'error parsing the packet header' when concatenating mp3 files

  27 décembre 2020, par Dtomper

  I downloaded many songs from youtube and mixed them using this command : ffmpeg -f concat -safe 0 -i mylist.txt -map 0:a mixed.mp3 where mylist.txt is a list of all the downloaded files.
During the exportation I kept getting the following error :

  


  [opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0000022f1bea3700] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input


  


  After the mix was exported, I heard it and there was a weird sound playing when it was the turn of this song : https://www.youtube.com/watch?v=iY0RwKIG_BQ

  


  At first, I used youtube-dl to download the song from python. After that, I used https://ytmp3.cc/ but none of them worked. I keep getting this error and that weird sound in the mix file.