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• How to call ffmpeg main method from Xcode 7.2 ?

  15 mars 2016, par user5761723

  I’m new to iOS app Development. I compiled the ffmpeg-3.0 libraries for iOS. and integrate them into Xcode. but when i try to call main method of ffmpeg.c, it won’t work.

  Can someone tell me the procedure, how to move ahead from here ?. i actually want to convert audio formats.

• Transcription via OpenAi's whisper : AssertionError : incorrect audio shape

  1er avril 2024, par muratowski

  I'm trying to use OpenAI's open source Whisper library to transcribe audio files.

  


  Here is my script's source code :

  


  import whisper

model = whisper.load_model("large-v2")

# load the entire audio file
audio = whisper.load_audio("/content/file.mp3")
#When i write that code snippet here ==> audio = whisper.pad_or_trim(audio) the first 30 secs are converted and without any problem they are converted.

# make log-Mel spectrogram and move to the same device as the model
mel = whisper.log_mel_spectrogram(audio).to(model.device)

# detect the spoken language
_, probs = model.detect_language(mel)
print(f"Detected language: {max(probs, key=probs.get)}")

# decode the audio
options = whisper.DecodingOptions(fp16=False)
result = whisper.decode(model, mel, options)

# print the recognized text if available
try:
    if hasattr(result, "text"):
        print(result.text)
except Exception as e:
    print(f"Error while printing transcription: {e}")

# write the recognized text to a file
try:
    with open("output_of_file.txt", "w") as f:
        f.write(result.text)
        print("Transcription saved to file.")
except Exception as e:
    print(f"Error while saving transcription: {e}")


  


  In here :

  


  # load the entire audio file
audio = whisper.load_audio("/content/file.mp3")


  


  when I write below : " audio = whisper.pad_or_trim(audio) ", the first 30 secs of the sound file is transcribed without any problem and language detection works as well,

  


  but when I delete it and want the whole file to be transcribed, I get the following error :

  


  


  AssertionError : incorrect audio shape

  


  


  What should I do ? Should I change the structure of the sound file ? If yes, which library should I use and what type of script should I write ?

  


• Compiling FFmpeg lib and add it to NDK sources on Windows8

  28 septembre 2014, par Dalvik

  I’ve seen some articles about how to compile and uses FFmpeg for Android.

  Thess are good examplea - example1 and example2

  Unfortunately, non off them, or others I found helped me. In those two examples a build_android.sh is created and configure the FFmpeg’s configuraion file and call to make. Every time when I’m running the script I’m getting the following error :

  c:\android\development\android-ndk-r9\sources\ffmpeg>sh build_android.sh
  
  c:/android/development/android-ndk-r9/toolchains/arm-linux-androideabi-4.8/prebu
  
  ilt/windows-x86_64/arm-linux-androideabi/bin/bin/arm-linux-androideabi-gcc is un
  
  
  
  able to create an executable file.
  
  C compiler test failed.
  
  
  
  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solving the problem.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:49: /common.mak: No such file or directory
  
  Makefile:92: /libavutil/Makefile: No such file or directory
  
  Makefile:92: /library.mak: No such file or directory
  
  Makefile:169: /doc/Makefile: No such file or directory
  
  Makefile:170: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory

  If someone encountered and solved this issue it’ll be much appreciated !

  After trying the suggested script I ran into a new problem that I couldn’t solved, this is the output of the script :

  .... Enabled components list....

  In the end of the list I got the following :

  Enabled indevs :
  dv1394 v4l2i
  fbdev

  Enabled outdevs :
  fbdev v4l2

  License : LGPL version 2.1 or later
  Creating config.mak, config.h, and doc/config.texi...

  WARNING : C :/android/development/android-ndk-r9/toolchains/arm-linux-androideabi-
  4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-pkg-config not found, libr
  ary detection may fail.
  make : * No rule to make target libavfilter/libavfilter.so', needed byall-ye
  s’. Stop.
  make : * No rule to make target install-libavfilter-shared', needed byinstal
  l-libs-yes’. Stop.