gistfile1.txt

python fast_video.py ~/Downloads/2020_01_17_14_43_49.mp4 2 
ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/distinct/Downloads/2020_01_17_14_43_49.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2020-01-17 20:02:52
  Duration: 00:19:01.85, start: 0.000000, bitrate: 4544 kb/s
    Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 720x1280, 4443 kb/s, SAR 1:1 DAR 9:16, 25.82 fps, 90k tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2020-01-17 20:02:52
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 96 kb/s (default)
    Metadata:
      creation_time   : 2020-01-17 20:02:52
      handler_name    : SoundHandle
Output #0, wav, to 'output.wav':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    ISFT            : Lavf56.40.101
    Stream #0:0(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s (default)
    Metadata:
      creation_time   : 2020-01-17 20:02:52
      handler_name    : SoundHandle
      encoder         : Lavc56.60.100 pcm_s16le
Stream mapping:
  Stream #0:1 -> #0:0 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
size=  196636kB time=00:19:01.41 bitrate=1411.3kbits/s    
video:0kB audio:196636kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000039%
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Traceback (most recent call last):
  File "fast_video.py", line 84, in <module>
    if getMaxVolume(audioChunk) < 500:
  File "fast_video.py", line 34, in getMaxVolume
    maxv = np.max(s)
  File "<__array_function__ internals>", line 6, in amax
  File "/home/distinct/.pyenv/versions/3.7.0/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 2668, in amax
    keepdims=keepdims, initial=initial, where=where)
  File "/home/distinct/.pyenv/versions/3.7.0/lib/python3.7/site-packages/numpy/core/fromnumeric.py", line 90, in _wrapreduction
    return ufunc.reduce(obj, axis, dtype, out, **passkwargs)
ValueError: zero-size array to reduction operation maximum which has no identity