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• ffmpeg connection reset by peer

  8 mars 2015, par Quentin Spottiswoode

  I have a problem when using ffmpeg :

  quite often my clients will have slightly dodgy internet connections but they subscribe to a service which is designed to record a stream that they are hosting, and record it for hosting on something like a wordpress site.

  ffmpeg is called by a python script. I would like, ideally, to know if ffmpeg will throw an exception or return a value that can be accessed by the python script and used as a variable to determine if there was a problem recording the audio.

  at the moment python calls ffmpeg using :

  os.system('ffmpeg -i [stream address] -t 1:00 -acodec copy ')

  when I simulate a connection loss (turning off the NIC on the virtual machine) ffmpeg prints to the terminal

  Connection reset by peer

• Send automatic keypress in Command Prompt

  28 mars 2018, par Dennis

  I have a .bat file which I want to run on a specific date and time using Task Scheduler in Windows while I’m away from my computer. It will open a Windows server and record it using FFmpeg, a command-line based desktop recording tool but I want it to press ’q’ after xx seconds. Here’s what I have so far.

  @echo off
  
  
  
  :: Bot runner or server
  
  
  
  start "GLPDVWAPP098" "c:\Program Files\uvnc bvba\UltraVNC\vncviewer.exe" GLPDVWAPP098 /quickoption 3 /keepalive 300 -disableclipboard -nostatus -shared -autoreconnect 0
  
  
  
  timeout /t 3
  
  
  
  :: Execute desktop recording
  
  
  
  ffmpeg -f gdigrab -framerate 50 -i title="glpdvwapp098 ( 10.236.80.246 ) - service mode " Test1.avi
  
  
  
  pause

  When FFmpeg is executed, it won’t stop recording until ’q’ is pressed but I want to avoid it from recording too long until I’m on the computer.

• m4a/mp3 files to wav for Bing Speech API

  17 décembre 2018, par Waqas

  Bing Speech API only accepts wav files so I have been trying to convert m4a (Skype) and mp3 (Facebook) audio files I am getting in my chatbot to wav format. I am using fluent-ffmpeg in node.js.

  For now, I am downloading the audio file, converting it to wav and returning the piped output for use ahead.

  if (attachment.contentType === 'audio/x-m4a') {
  
    request.get(attachment.contentUrl).pipe(fs.createWriteStream('file.m4a'));
  
    var command = ffmpeg('file.m4a')
  
          .toFormat('wav')
  
          .on('error', function (err) {
  
              console.log('An error occurred: ' + err.message);
  
          })
  
          .on('progress', function (progress) {
  
              // console.log(JSON.stringify(progress));
  
              console.log('Processing: ' + progress.targetSize + ' KB converted');
  
          })
  
          .on('end', function () {
  
              console.log('Processing finished !');
  
          });
  
  
  
    return command.pipe();
  
  }

  Right now, the conversion works when I send the m4a file through the botframework-emulator on my pc. But when I specify my pc as the endpoint (through ngrok) and try to send the m4a file from the chat test at the bot framework developer end, ffmpeg returns an error :

  An error occurred: ffmpeg exited with code 1: file.m4a: Invalid data found when processing input

  But when I play the downloaded m4a file, it plays alright.

  The content URL is https in the second case if that matters.

  Kindly help me with two things :

  1. Downloading, Converting and Returning without storing anything on my end
  2. Downloading/Accessing m4a/mp3 files properly

  I am new to streams, pipes and ffmpeg and all the above code is after googling.