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• Pydub : How to ave audio after convert it to aac ?

  4 août 2023, par suvodipMondal

  I am using django admin form to recieve a audio input, and I am trying to convert it into aac format with pydub.
I have installed ffmpeg in my system and also added pydub and ffmpeg-python as dependencies.

  


  Here is the django ModelAdmin :

  


  class AudioAdmin(admin.ModelAdmin):
    fields = ('file', 'bit_rate', 'format')
    list_display = ('id', 'file', 'bit_rate', 'format', 'content_type')

    def save_model(self, request, obj, form, change):
        audio_file = form.cleaned_data['file']
        _, file_extension = os.path.splitext(audio_file.name)
        curr_audio = AudioSegment.from_file(file=audio_file, format=file_extension.replace('.', ''))
        new_audio = curr_audio.export(out_f=audio_file.name, format="aac")
        obj.file = new_audio
        obj.save()



  


  I am still getting this error while converting an mp3 file in aac format.

  


      raise CouldntEncodeError(
pydub.exceptions.CouldntEncodeError: Encoding failed. ffmpeg/avlib returned error code: 1
Command:['ffmpeg', '-y', '-f', 'wav', '-i', '/var/folders/8g/230x9vx55p7c0bdwx0cmzx9r0000gq/T/tmpxaetjjk0', '-f', 'aac', '/var/folders/8g/230x9vx55p7c0bdwx0cmzx9r0000gq/T/tmpa3ae8nn1']
Output from ffmpeg/avlib:
ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
  built with Apple clang version 14.0.0 (clang-1400.0.29.202)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/6.0 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from '/var/folders/8g/230x9vx55p7c0bdwx0cmzx9r0000gq/T/tmpxaetjjk0':
  Duration: 00:03:14.72, bitrate: 1411 kb/s
  Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
[NULL @ 0x7fe40da072c0] Requested output format 'aac' is not a suitable output format
/var/folders/8g/230x9vx55p7c0bdwx0cmzx9r0000gq/T/tmpa3ae8nn1: Invalid argument


  


• How can I resolve the FileNotFoundError when attempting to convert an MP3 to WAV using ffmpeg in Python ?

  3 juin 2023, par avocado123123

  I have an MP3 file that I want to convert into a WAV file, but no matter how I try writing the code, it keeps raising FileNotFoundError on the MP3 file and warns me about the installation of FFmpeg.

  


  my code :

  


  from pydub import AudioSegment

# Specify the path to the FFmpeg executable
ffmpeg_path = r"C:\Users\תמרה\AppData\Local\ffmpegio\ffmpeg-downloader\ffmpeg\bin\ffmpeg.exe"
AudioSegment.ffmpeg = ffmpeg_path
AudioSegment.ffprobe = ffmpeg_path

# Load the MP3 file
mp3_file = r"C:\Users\תמרה\Tea Time - Ofshane.mp3"
audio = AudioSegment.from_file(mp3_file, format="mp3")

# Export as WAV
wav_file = r"C:\Users\תמרה\Tea Time - Ofshane.wav"
audio.export(wav_file, format="wav")


  


  when running :

  


  C:\Users\תמרה\PycharmProjects\spotify\venv\Scripts\python.exe "C:\Users\תמרה\PycharmProjects\spotify\file stuff.py" C:\ffmpeg-2023-05-29-git-45fa85a777-full_build\bin\ffmpeg.exe &#xA;C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\utils.py:170: RuntimeWarning: Couldn&#x27;t find ffmpeg or avconv - defaulting to ffmpeg, but may not work&#xA;  warn("Couldn&#x27;t find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)&#xA;C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\utils.py:198: RuntimeWarning: Couldn&#x27;t find ffprobe or avprobe - defaulting to ffprobe, but may not work&#xA;  warn("Couldn&#x27;t find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning)&#xA;Traceback (most recent call last):&#xA;  File "C:\Users\תמרה\PycharmProjects\spotify\file stuff.py", line 12, in <module>&#xA;    audio = AudioSegment.from_file(mp3_file, format="mp3")&#xA;  File "C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\audio_segment.py", line 728, in from_file&#xA;    info = mediainfo_json(orig_file, read_ahead_limit=read_ahead_limit)&#xA;  File "C:\Users\תמרה\PycharmProjects\spotify\venv\lib\site-packages\pydub\utils.py", line 274, in mediainfo_json&#xA;    res = Popen(command, stdin=stdin_parameter, stdout=PIPE, stderr=PIPE)&#xA;  File "C:\Users\תמרה\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 971, in __init__&#xA;True&#xA;    self._execute_child(args, executable, preexec_fn, close_fds,&#xA;  File "C:\Users\תמרה\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1440, in _execute_child&#xA;    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,&#xA;FileNotFoundError: [WinError 2] The system cannot find the file specified&#xA;&#xA;Process finished with exit code 1&#xA;&#xA;</module>

  


  What should I do to make this work ?

  


• FFmpeg : h264 output broken

  22 juin 2023, par puaaaal

  When I try to encode anything (no -c copy) using the h264 codec, the output is broken in the sense that it can't be played by any standard player (like Windows Media Player). VLC works mostly fine, but also here I had problems, that the video did not align properly. When I use ffplay though, it works fine. When I try to play my source material, which is also encoded with h264, all those methods to play it work fine. (I use mp4 as a container for all these tests)

  


  Command to reproduce :

  


  ffmpeg -f lavfi -i "testsrc=d=10" -vcodec h264 test_h264.mp4


  


  When I use mpeg4 instead, it works fine :

  


  ffmpeg -f lavfi -i "testsrc=d=10" -vcodec mpeg4 test_mpeg4.mp4


  


  Is there something I am missing here, or might this be a bug ?

  


  ffmpeg -version :

  


  ffmpeg version n6.0-22-g549430e14d-20230607 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 13.1.0 (crosstool-NG 1.25.0.196_227d99d)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --disable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20230607
libavutil      58.  2.100 / 58.  2.100
libavcodec     60.  3.100 / 60.  3.100
libavformat    60.  3.100 / 60.  3.100
libavdevice    60.  1.100 / 60.  1.100
libavfilter     9.  3.100 /  9.  3.100
libswscale      7.  1.100 /  7.  1.100
libswresample   4. 10.100 /  4. 10.100
libpostproc    57.  1.100 / 57.  1.100