Recherche avancée

Sur d’autres sites (11382)

• What is the most efficient way to convert wav audio string to an ogg file without writing it to disk ?

  1er janvier 2023, par Saurabh Kumar Karn

  My final objective is to use TTS to get some Indic text converted into audio and pass that audio to a messaging system that accepts mp3 and ogg. Ogg is preferred.

  


  I am on Ubuntu and my flow for getting audio string is something like this.

  


  

  1. Text in Indic language is passed to an API

  


  2. API returns a json with a key value called audioContent. audioString = response.json()['audio'][0]['audioContent']

  


  3. The decoded string is arrived by using this decode_string = base64.b64decode(dat)

  


  


  I am currently converting it to mp3 and as you can see I am writing the wave file first and then converting it into an mp3.

  


  wav_file = open("output.wav", "wb")
decode_string = base64.b64decode(audioString)
wav_file.write(decode_string)

# Convert this to mp3 file
print('mp3file')
song = AudioSegment.from_wav("output.wav")
song.export("temp.mp3", format="mp3")


  


  Is there a way to convert audioString directly to ogg file without doing the io ?

  


  I've tried torchaudio and pyffmpeg to load audioString and do the conversion but it doesn't seem to be working.

  


• Channel layout is unknown error, how to use filters with any number of channels ?

  8 novembre 2022, par Arthur Martens

  Using this command line

  


  'C:/Program Files/ffmpeg/bin/ffmpeg.exe' -i "INPUT.mxf" -map 0:0 -af atrim=start_sample=336000:end_sample=2448000,silencedetect=mono=1 -f null -

  


  I get the following error :

  


      Stream #0:0: Audio: pcm_s24le, 48000 Hz, 12 channels, s32 (24 bit), 13824 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010F2013000000D8A84B5D697B45F6ABAD7B54C1D78390
      file_package_name: File Package: SMPTE 382M frame wrapping of wave audio
      track_name      : Sound Track
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s24le (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[auto_resampler_0 @ 000002449bdf03c0] Cannot select channel layout for the link between filters auto_resampler_0 and Parsed_silencedetect_1.
[auto_resampler_0 @ 000002449bdf03c0] Unknown channel layouts not supported, try specifying a channel layout using 'aformat=channel_layouts=something'.
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
Conversion failed!


  


  How can I use filters, like scan a 12 channel input for silence, when there is no channel layout ?

  


• FFmpeg and Jupyter Notebooks

  12 mai 2022, par Clerni

  I'm getting the error RuntimeError: Requested MovieWriter (ffmpeg) not available when trying to run this simple example of creating and displaying an animation in a Jupyter Notebook.

  


  ---------------------------------------------------------------------------&#xA;RuntimeError                              Traceback (most recent call last)&#xA; in <module>&#xA;      8 &#xA;      9 # Define the meta data for the movie&#xA;---> 10 FFMpegWriter = manimation.writers[&#x27;ffmpeg&#x27;]&#xA;     11 metadata = dict(title=&#x27;Movie Test&#x27;, artist=&#x27;Matplotlib&#x27;,&#xA;     12                 comment=&#x27;a red circle following a blue sine wave&#x27;)&#xA;&#xA;/usr/local/lib/python3.8/dist-packages/matplotlib/animation.py in __getitem__(self, name)&#xA;    164         if self.is_available(name):&#xA;    165             return self._registered[name]&#xA;--> 166         raise RuntimeError(f"Requested MovieWriter ({name}) not available")&#xA;    167 &#xA;    168 &#xA;&#xA;RuntimeError: Requested MovieWriter (ffmpeg) not available&#xA;&#xA;</module>

  


  Running !pip install ffmpeg didn't help, as ffmpeg is already installed, apparently :

  


  Requirement already satisfied: ffmpeg in /home/username/.local/lib/python3.8/site-packages


  


  How can I make this work ?