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• avfilter/graphparser : remove ’\n’ from parse_filter

  5 mai 2016, par Muhammad Faiz

  avfilter/graphparser : remove ’\n’ from parse_filter
  this allow a filter to be written like this :
  
  aformat =
  
      sample_fmts  = fltp|flt :
  
      sample_rates = 44100|44800
  Signed-off-by : Muhammad Faiz <mfcc64@gmail.com>
  

  • [DH] libavfilter/graphparser.c

• doc/resampler : add exact_rational option

  13 juin 2016, par Muhammad Faiz

  doc/resampler : add exact_rational option
  Signed-off-by : Muhammad Faiz <mfcc64@gmail.com>
  

  • [DH] doc/resampler.texi

• How to Concatenate bunch of videos using python ?

  5 juillet 2023, par Saikat Chakraborty

  So, I have over 5000 small clips that I need to combine. To apply various custom filter over their names, I want to do it with python. I have the following code :

  


  import os
from moviepy.editor import *
os.chdir('D:/videos')
list1, list2 = os.listdir(), []

for i in list1: #filtering
    if i[-6:] != '-l.mp4' and i[-7:] != 'ALT.mp4':
        list2.append(i)
print('Getting Video Info:')

final = VideoFileClip(list2[0])


for i in range(1,len(list2)):
    final = concatenate_videoclips([final, VideoFileClip(list2[i])])
    print('\r' + str(i+1) + '/' + str(len(list2)), end='')


os.chdir('D:')
final.write_videofile('Merged.mp4')


  


  But the program is creating lots of processes and just after reading 150 clips it's crashing.

It keeps increasing !
Is there any easier way/alternative to do this ? Thanks !

  


  Edit :
  
I've tried using ffmpeg too, but concatenation removes the audio since concat protocol doesn't support .mp4 extension. In that case. Even if I convert all the files to .ts extension and try to concatenate them,WindowsError: [Error 206] The filename or extension is too long pops up because too many files are separated by |. I did the following changes after converting all the files to .ts format :

  


  import os
import ffmpeg
os.chdir('D:/videos')
list1 = os.listdir()
list2 = [i for i in list1 if i[-3:] == '.ts']
list2[0] = ffmpeg.input(list2[0])
for i in range(1, len(list2)):
    list2[i] = ffmpeg.concat(list2[i-1], ffmpeg.input(list2[i]))
    print('\r' + str(i) + '/' + str(len(list2)), end='')
ffmpeg.output(list2[-1], 'D:\Merged.mp4')
ffmpeg.run(list2[-1])


  


  But now I'm getting RecursionError: maximum recursion depth exceeded while calling a Python object.