Audio glitches when using concatenate_videoclips.

[josewails]

I have written a function that creates a bunch of video clips and then finally combines them into one.

`
def process_video(self):

    """

    This combines the text and audio into a video

    """

    intermediate_clips = list()

    n = len(self.audio_paths)

    first_clip = self.make_first_clip()
    last_clip = self.make_last_clip()

    for i in range(1, n - 1):
        self.current_index = i

        intermediate_clips.append(self.make_sliding_video_clip())
        intermediate_clips.append(self.make_video_clip())

    self.current_index = 0
    final_clips = [first_clip] + intermediate_clips + [last_clip]

    final_clip = concatenate_videoclips(final_clips, method='compose')
    final_clip.write_videofile('final.mp4', fps=60, codec='mpeg4')

`

However, the resulting clip has some audio glitches.

Here is the resulting video. https://www.youtube.com/watch?v=QYURIo3dWPk. If you watch it, you will realize there are a couple of glitches at the end of the clips. Doesn't happen all the time but sometimes.

Any ideas on how to avoid those glitches?

[Zulko]

I can't hear much glitching, but the best way to remove it would be to add a 0.01 second audio fade-in/fade-out in all your clips:

final_clips = [
    clip.audio_fadein(0.01).audio_fadeout(0.01)
    for clip in ([first_clip] + intermediate_clips + [last_clip])
]

[josewails]

@Zulko. Thanks a lot for this. The audio_fade effect did the trick.

[jake-nz]

This problem has been reported many many times.
#1854
#1005
#1717
#1710
#1936

Here's the root cause: #1936 (comment)