[Python] pyttsx3 produced mp3 not recognizable by pydub

Discussão em 'Python' iniciado por Stack, Agosto 26, 2025.

  1. Stack

    Stack Membro Participativo

    In using pyttsx3 to produce mp3 audio files, it seems there's a problem that the mp3 file is not recognizable by pydub.

    pyttsx3: text to speech package pydub: audio handling package

    The error message says a lot of "Header missing".

    The code is below.

    What went wrong, and how can it be corrected?

    import pyttsx3

    engine = pyttsx3.init("sapi5")
    engine.setProperty('rate', 130) # number higher the faster
    voices = engine.getProperty("voices")

    engine.setProperty("voice", voices[0].id)

    texts = "a quick sentence into mp3"

    engine.save_to_file(texts, "C:\\TEM\\temp audio.mp3")
    engine.runAndWait()
    # the produced file plays no problem by media player in Windows.

    # here to read the mp3 audio file produced
    from pydub import AudioSegment

    sound1 = AudioSegment.from_file(r"C:\\TEM\\temp audio.mp3", format="mp3") # error pops here


    Error message is here:

    Traceback (most recent call last):
    File "C:\My Documents\script.py", line 17, in <module>
    sound1 = AudioSegment.from_file(r"C:\\TEM\\temp audio.mp3", format="mp3")
    File "C:\Python38\lib\site-packages\pydub\audio_segment.py", line 773, in from_file
    raise CouldntDecodeError(
    pydub.exceptions.CouldntDecodeError: Decoding failed. ffmpeg returned error code: 1
    Output from ffmpeg/avlib:
    ffmpeg version 2023-04-17-git-65e537b833-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
    built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
    configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
    libavutil 58. 6.100 / 58. 6.100
    libavcodec 60. 9.100 / 60. 9.100
    libavformat 60. 4.101 / 60. 4.101
    libavdevice 60. 2.100 / 60. 2.100
    libavfilter 9. 5.100 / 9. 5.100
    libswscale 7. 2.100 / 7. 2.100
    libswresample 4. 11.100 / 4. 11.100
    libpostproc 57. 2.100 / 57. 2.100
    [mp3float @ 000002788275f6c0] Header missing
    Last message repeated 31 times
    [mp3 @ 00000278827328c0] Could not find codec parameters for stream 0 (Audio: mp3 (mp3float), 0 channels, fltp): unspecified frame size
    Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
    Input #0, mp3, from 'C:\\TEM\\temp audio.mp3':
    Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Audio: mp3, 0 channels, fltp
    Stream mapping:
    Stream #0:0 -> #0:0 (mp3 (mp3float) -> pcm_s16le (native))
    Press [q] to stop, [?] for help
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [mp3float @ 000002788277ba00] Header missing
    Error while decoding stream #0:0: Invalid data found when processing input
    [graph_0_in_0_0 @ 000002788277a640] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    Last message repeated 1 times
    [graph_0_in_0_0 @ 000002788277a640] Error setting option time_base to value 1/0.
    [graph_0_in_0_0 @ 000002788277a640] Error applying generic filter options.
    Error reinitializing filters!
    Error while filtering: Result too large
    [aost#0:0/pcm_s16le @ 000002788277fc00] Finishing stream without any data written to it.
    [graph_0_in_0_0 @ 000002788277eb80] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    Last message repeated 1 times
    [graph_0_in_0_0 @ 000002788277eb80] Error setting option time_base to value 1/0.
    [graph_0_in_0_0 @ 000002788277eb80] Error applying generic filter options.
    [aost#0:0/pcm_s16le @ 000002788277fc00] Error configuring filter graph
    Conversion failed!

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