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• fluent-ffmpeg add multiple languages from method dynamically nodejs

  18 février 2021, par AmitKumar

  I am trying to add multiple languages and subtitles to a video dynamically. but I am not able to find any solution, I found many results for the command line.

  


  I want to call this command script from my nodejs method

  


  ffmpeg -i captain-marvel-trailer.mp4 -i tamil.mp3 -i telugu.mp3 -i hindi.mp3 -map 1 -map 2 -map 3 -metadata:s:a:0 language=eng -metadata:s:a:1 language=tam -metadata:s:a:2 language=tel -metadata:s:a:3 language=hin -codec copy multilanguage.mp4


  


  Here is my codes :

  


  lodash.each(payloadData.languages,function(language){
    let start = 0;
    let max = payloadData.languages.length;
    while (start < max) {
        // fname = `${path.resolve(`contents/hindi.mp3`)} -map 1 -metadata:s:a:0 language=hin -codec copy ${finalVideoPath}`
        // ffmpeg().input(fname)        
        start += 1;
    }
})
    
ffmpeg('./sample.mov')
    .withOutputFormat('.mp4')
    .size('1920x1080')
    .on("end", function (stdout, stderr) {  

    })
}).on("error", function (err) {
    console.log("an error happened: " + err.message);
}).save(finalVideoPath)


  


• How i can convert with Python (audio file from .oga format to .wav format) without using ffmpeg ?

  21 août 2021, par Maks

  Telegram save audio file with .oga, but in my telegram bot i using googleSpeech recognition library which takes .wav file format.
I used ffmpeg with my computer, but it needs to install the program and runs it in subprocess, but if i want deploy bot in some host, i need install ffmpeg on it.
How can i convert .oga to .wav using only python libraries ?
Here is my part of code, if who needs.

  


  def convert_file(self):
    if os.path.exists(os.path.abspath(self.filename)) and os.path.exists(self.new_file):
        pass
    else:
        process = subprocess.run(["ffmpeg", "-hide_banner", "-i", 
(os.path.abspath(self.filename)), self.new_file])
        if process.returncode != 0:
            raise Exception("Something went wrong")

async def recognize_file(self):
    try:
        tlg_audio = sr.AudioFile(os.path.abspath(self.new_file))
        r = sr.Recognizer()
        with tlg_audio as source:
            audio = r.listen(source)
            if self.language is None:
                self.language = "ru-Ru"
                text = r.recognize_google(audio, language=self.language)
                return text
            else:
                text = r.recognize_google(audio, language=self.language)
                return text
    except sr.UnknownValueError:
        return "I not hear you"


  


• How to escape characters in Windows batch file

  8 février 2017, par Tirafesi

  I’m trying to create a script to run a program that receives as an argument the name of a file. The problem I’m having is that the program doesn’t work if the filename has special characters in it.

  I found this post which helped me a bit. With a few modifications on that script I’m able to use the program with filenames containing [ and ].

  However, there are still some other special characters that cause the program to not run. Is it possible to create a batch for all special characters ? If not, I would at least need to be able to parse not only [ and ], but ' as well.

  This is what I have working at the moment. How can I at least add ' to this ?

  if not exist "mp4\" mkdir mp4
  
  setlocal disableDelayedExpansion
  
  for %%f in (*.mkv) do (
  
    set _a=%%~nf
  
    set _c=%%f
  
    setlocal enableDelayedExpansion
  
    set _b=!_a:[=\[!
  
    set _name=!_b:]=\]!
  
    set _d=!_c:[=\[!
  
    set _fullname=!_d:]=\]!
  
    "SOMEPATH\ffmpeg\bin\ffmpeg.exe" -i "%%f" -vf subtitles="!_name!.mkv:si=1" -c:v h264_qsv -c:a copy -map 0:v:0 -map 0:a:1 -q:v 6 -look_ahead 0 "mp4/%%~nf.mp4"
  
    endlocal
  
  )
  
  endlocal
  
  pause

  If you could explain the reasoning behind stuff that would be cool as well. I don’t understand much about scripting, but I would like to understand what’s going on in this batch...

  Oh, and here is the documentation for escaping characters in this program.