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Concatenating subclips: "AttributeError: 'CompositeAudioClip' object has no attribute 'fps'"

See original GitHub issue

Expected Behavior

Concatenates and plays composite video file.

Actual Behavior

Preview freezes on first frame with the following output:

pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "<decorator-gen-100>", line 2, in preview
  File "/usr/lib/python3.7/site-packages/moviepy/decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "/usr/lib/python3.7/site-packages/moviepy/audio/io/preview.py", line 49, in preview
    sndarray = clip.to_soundarray(tt, nbytes=nbytes, quantize=True)
  File "<decorator-gen-72>", line 2, in to_soundarray
  File "/usr/lib/python3.7/site-packages/moviepy/decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "/usr/lib/python3.7/site-packages/moviepy/audio/AudioClip.py", line 110, in to_soundarray
    fps = self.fps
AttributeError: 'CompositeAudioClip' object has no attribute 'fps'

Steps to Reproduce the Problem

#!/usr/bin/env python3

import moviepy.editor as mpy

clip=mpy.VideoFileClip("sample.mp4")
#clip=clip.without_audio()

subclip=mpy.concatenate_videoclips([clip.subclip((1,0),(2,0)),clip.subclip((3,0),(4,0)),clip.subclip((5,0),(6,0))])

subclip.preview()

Note that uncommenting the clip=clip.without_audio() removes the error.

Specifications

Python Version: 3.7.0
Moviepy Version: 0.2.3.5
Platform Name: Arch Linux
Platform Version: 4.18.12-arch1-1-ARCH

Issue Analytics

State:
Created 5 years ago
Reactions:1
Comments:10 (1 by maintainers)

Top GitHub Comments

2reactions

mislandcommented, Apr 22, 2020

final_clip = CompositeAudioClip(arr)
final_clip.fps = 44100
final_clip.write_audiofile('res.mp3')

maybe this is a workaround 😃

1reaction

astridcasadeicommented, Oct 26, 2020

I had the same problem as helasraizam when using ‘concatenate_videoclips’ and ‘preview’. His workaround didn’t work for me, but the following did:

#!/usr/bin/env python3

import moviepy.editor as mpy

clip=mpy.VideoFileClip("sample.mp4")

subclip=mpy.concatenate_videoclips([clip.subclip((1,0),(2,0)),clip.subclip((3,0),(4,0)),clip.subclip((5,0),(6,0))])
 
aud = subclip.audio.set_fps(44100)
subclip = subclip.without_audio().set_audio(aud)
subclip.preview()

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