VideoFileClip IndexError: list index out of range, OSError: MoviePy error: failed to read the duration of file

We are recording videos from the browser with the following encoding ‘video/webm; codecs=“vp8, opus”’, then we upload these videos to an AWS S3 bucket. Our ML model works on these videos, and one of the models needs to extarct the audio and process it. Here is a code snapit for extracting the audio

import speech_recognition as sr
import moviepy.editor as me
from denoise2 import denoise
from sentence_transformers import SentenceTransformer
from sklearn.metrics.pairwise import cosine_similarity
import math

model_name = 'bert-base-nli-mean-tokens'
model = SentenceTransformer(model_name)


class recomm:
    y = 0.0

    def __init__(self, path, keywords):
        video_clip = me.VideoFileClip(r"{}".format(path))
        path2 = "y2.wav"
        video_clip.audio.write_audiofile(r"{}".format(path2), nbytes=2)
        recognizer = sr.Recognizer()
        """a = AudioSegment.from_wav(path2)
        a = a + 5
        a.export(path2, "wav")"""
        audio_clip = sr.AudioFile("{}".format(path2))
        with audio_clip as source:
            audio_file = recognizer.record(source)
        sent = []
        result = ""
        try:
            result = recognizer.recognize_google(audio_file)
        except sr.UnknownValueError:
            print("Can not process audio ")
        if not result:
            self.y = 0
        else:
            print(result)
            sent.append(result)
            sent = sent + keywords
            sent_vec3 = model.encode(sent)
            x = cosine_similarity(
                [sent_vec3[0]],
                sent_vec3[1:]
            )
            for i in range(len(x)):
                self.y = self.y + x[0][i]
            self.y = (self.y / (len(sent) - 1)) * 1000.0

    def res(self):
        if self.y < 0:
            self.y = 0
        return self.y

And that’s the traceback, the error occurred at this line

video_clip = me.VideoFileClip(r"{}".format(path))

Traceback (most recent call last):
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_reader.py", line 286, in ffmpeg_parse_infos
    match = re.findall("([0-9][0-9]:[0-9][0-9]:[0-9][0-9].[0-9][0-9])", line)[0]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "main.py", line 90, in <module>
    main()
  File "main.py", line 85, in main
    interviews_channel.start_consuming()
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 1865, in start_consuming
    self._process_data_events(time_limit=None)
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 2026, in _process_data_events
    self.connection.process_data_events(time_limit=time_limit)
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 833, in process_data_events
    self._dispatch_channel_events()
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 567, in _dispatch_channel_events
    impl_channel._get_cookie()._dispatch_events()
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 1492, in _dispatch_events
    consumer_info.on_message_callback(self, evt.method,
  File "main.py", line 79, in callback
    processing(json.loads(body))
  File "main.py", line 34, in processing
    r = recomm(path, keywords)
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/recommendation.py", line 17, in _init_
    video_clip = me.VideoFileClip(r"{}".format(path))
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/moviepy/video/io/VideoFileClip.py", line 88, in _init_
    self.reader = FFMPEG_VideoReader(filename, pix_fmt=pix_fmt,
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_reader.py", line 35, in _init_
    infos = ffmpeg_parse_infos(filename, print_infos, check_duration,
  File "/home/medo/Dev/Smart-remotely-interviewing-system/backend/Process-interview/test/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_reader.py", line 289, in ffmpeg_parse_infos
    raise IOError(("MoviePy error: failed to read the duration of file %s.\n"
OSError: MoviePy error: failed to read the duration of file 74b74292-3642-486a-8319-255bb7e7da5a-1647363285285.webm.
Here are the file infos returned by ffmpeg:

ffmpeg version 4.2.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, matroska,webm, from '74b74292-3642-486a-8319-255bb7e7da5a-1647363285285.webm':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    Stream #0:1(eng): Video: vp8, yuv420p(progressive), 640x480, SAR 1:1 DAR 4:3, 29.42 fps, 29.42 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      alpha_mode      : 1
At least one output file must be specified

Specifications

• Python Version: 3.8.10
• Moviepy Version: 1.0.3
• Platform Name: Ubuntu
• Platform Version: 20.04 LTS

[MedoOnlyOne]

@keikoro I have edited the issue.

[keikoro]

@MedoOnlyOne Please edit your issue to include example code which causes this problem, thanks. (Code best be formatted using code formatting.)