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  • 'unsupported input sample rate set' error while converting mkv to mp3 with ffmpeg on python

    15 décembre 2020, par Agent Merlot

    I'm getting this error on trying to convert some mkv files to mp3 via python. Nearly all files got converted, but some are facing this issue.
    
https://cdn.discordapp.com/attachments/663255565451001866/788424224661569596/Error.txt

    


    Please help me fix this issue.

    


    ffmpeg output extracted from the discord link above :

    


    ffmpeg version git-2020-06-04-7f81785 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 49.100 / 56. 49.100
  libavcodec     58. 90.100 / 58. 90.100
  libavformat    58. 44.100 / 58. 44.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 84.100 /  7. 84.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, matroska,webm, from 'J:\DC ED\Original\045 'Kimi no Egao ga Nani Yori mo Suki Datta' by 'Chicago Poodle'.mkv':
  Metadata:
    title           : 045 'Kimi no Egao ga Nani Yori mo Suki Datta' by 'Chicago Poodle'.mkv
    COPYRIGHT       : © 2013 APTX4869 Fansub
    creation_time   : 2020-11-18T05:03:06.000000Z
    COMPOSER        : Chicago Poodle
    ENCODER         : Lavf58.44.100
  Duration: 00:01:20.04, start: 0.000000, bitrate: 2023 kb/s
    Stream #0:0(jpn): Video: hevc (Main), yuv420p(tv), 1440x1080 [SAR 4:3 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
    Metadata:
      title           : VIDEO[AVC]
      ENCODER         : Lavc58.90.100 libx265
      BPS-eng         : 1831510
      DURATION-eng    : 00:01:20.039000000
      NUMBER_OF_FRAMES-eng: 1919
      NUMBER_OF_BYTES-eng: 18324032
      _STATISTICS_WRITING_APP-eng: mkvmerge v49.0.0 ('Sick Of Losing Soulmates') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-11-18 05:03:06
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:1(jpn): Audio: aac (LC), 96000 Hz, stereo, fltp (default)
    Metadata:
      title           : AUDIO[AAC]
      BPS-eng         : 188626
      DURATION-eng    : 00:01:19.999000000
      NUMBER_OF_FRAMES-eng: 3750
      NUMBER_OF_BYTES-eng: 1886246
      _STATISTICS_WRITING_APP-eng: mkvmerge v49.0.0 ('Sick Of Losing Soulmates') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-11-18 05:03:06
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream mapping:
  Stream #0:1 -> #0:0 (aac (native) -> mp3 (mp3_mf))
Press [q] to stop, [?] for help
[mp3_mf @ 000002142f4a5fc0] MFT name: 'MP3 Encoder ACM Wrapper MFT'
[mp3_mf @ 000002142f4a5fc0] unsupported input sample rate set
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!


    


  • Can't overlay a WebM transpartent video on top of a MP4 using ffmpeg [closed]

    27 octobre 2020, par Hervé

    I have been struggling for hours trying to overlay a WebM transpartent video on top of a MP4 using ffmpeg. The two videos have the same duration. It should therefore be easy but I am getting desperate.

    


    "c:\Program Files\ffmpeg\bin\ffmpeg.exe" ^
-i drone.mp4 ^
-i trans.webm -pix_fmt yuv444p  ^
-filter_complex "[1:v]format=rgba,colorchannelmixer=aa=0.5[trans];[0:v][trans]overlay=10:10" ^
out.mp4


    


    I tried MANY MANY different options, formats, but kept obtaining the same outcome : ffmpeg simply ignores the alpha channel of the trans.webm file and considers its background as black. I used the colorchannelmixer=aa=0.5 and the 10:10 offset to actually see the problem. My goal is really to keep the original subtle alpha channel of trans.webm, NOT to set the black color to transparent.

    


    Some information about the two files :

    


    drone.mp4

    


        Metadata:
    creation_time   : 2020-10-27T10:18:38.000000Z
    handler_name    : VideoHandler
    encoder         : h264
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 191 kb/s (default)
    Metadata:
    creation_time   : 2020-10-27T10:18:38.000000Z
    handler_name    : SoundHandler


    


    trans.webm

    


        Input #0, matroska,webm, from 'trans.webm':
    Metadata:
    ENCODER         : Lavf58.51.100
    Duration: 00:00:27.00, start: 0.000000, bitrate: 28 kb/s
    Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv), 1920x1080, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
    Metadata:
    alpha_mode      : 1
    ENCODER         : Lavc58.100.100 libvpx-vp9
    DURATION        : 00:00:27.000000000


    


  • Why PyAudio doesn't read 'mp3' ?

    22 octobre 2020, par freshITmeat

    I tried to read file that I give with absolute path.
When I run my code first that I see is this message :

    


    D:\prog\datascience\anaconda\lib\site-packages\pydub\utils.py:170: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
  warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)


    


    I tried this :

    


    PATH_TO_FFMPEG = 'D:\\prog\\ffmpeg-win-2.2.2\\ffmpeg.exe'
pydub.AudioSegment.converter = r'D:\\prog\\ffmpeg-win-2.2.2\\ffmpeg.exe'


    


    And I separately installed ffmpeg with pip. But it didn't help.
When I try this :

    


    raw_sound = pydub.AudioSegment.from_mp3(file=track_path)


    


    where track_path is correct absolute path generated automatically.
So I got this this error :

    


    Traceback (most recent call last):&#xA;  File "D:\prog\PyCharm Community Edition 2020.2.2\plugins\python-ce\helpers\pydev\pydevd.py", line 1448, in _exec&#xA;    pydev_imports.execfile(file, globals, locals)  # execute the script&#xA;  File "D:\prog\PyCharm Community Edition 2020.2.2\plugins\python-ce\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile&#xA;    exec(compile(contents&#x2B;"\n", file, &#x27;exec&#x27;), glob, loc)&#xA;  File "D:/testtask2/test_task/testtask/get_mffc.py", line 165, in <module>&#xA;    slice_all_in_a_dir(&#x27;May 27 2020 LNC/Hydrophone 1/raw_records&#x27;)&#xA;  File "D:/testtask2/test_task/testtask/get_mffc.py", line 70, in slice_all_in_a_dir&#xA;    slice_samples(track_path= [file],&#xA;  File "D:/testtask2/test_task/testtask/get_mffc.py", line 48, in slice_samples&#xA;    raw_sound = pydub.AudioSegment.from_mp3(file=track_path)&#xA;  File "D:\prog\datascience\anaconda\lib\site-packages\pydub\audio_segment.py", line 738, in from_mp3&#xA;    return cls.from_file(file, &#x27;mp3&#x27;, parameters=parameters)&#xA;  File "D:\prog\datascience\anaconda\lib\site-packages\pydub\audio_segment.py", line 680, in from_file&#xA;    stdin_data = file.read()&#xA;AttributeError: &#x27;list&#x27; object has no attribute &#x27;read&#x27;&#xA;python-BaseException&#xA;</module>

    &#xA;

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