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• please critize my YouTube-DL & FFMPEG scripts

  18 février 2020, par QX7337

  my goals are to

  1. download the best video and the best audio that YouTube has

  2. save the video with audio as VP9 & MKV

  3. save the audio as OGG and also as FLAC

  currently i cannot save the audio as OGG, only as FLAC. only after I have FLAC, i run another script to make a copy from the FLAC into OGG

  please help me improve my script so that i can have both FLAC & OGG in one run, automatically

  thank you

  here is my script

  --format "(bestvideo[vcodec^=av01][height>=1080][fps>30]/bestvideo[vcodec=vp9.2][height>=1080][fps>30]/bestvideo[vcodec=vp9][height>=1080][fps>30]/bestvideo[vcodec^=av01][height>=1080]/bestvideo[vcodec=vp9.2][height>=1080]/bestvideo[vcodec=vp9][height>=1080]/bestvideo[height>=1080]/bestvideo[vcodec^=av01][height>=720][fps>30]/bestvideo[vcodec=vp9.2][height>=720][fps>30]/bestvideo[vcodec=vp9][height>=720][fps>30]/bestvideo[vcodec^=av01][height>=720]/bestvideo[vcodec=vp9.2][height>=720]/bestvideo[vcodec=vp9][height>=720]/bestvideo[height>=720]/bestvideo)+(bestaudio[acodec=opus]/bestaudio)/best" --keep-video
  
  --prefer-ffmpeg
  
  --merge-output-format mkv
  
  --extract-audio --audio-format flac

• FFMPEG gets in never ending condition while live streaming on YouTube

  17 avril 2019, par Nayan Katkani

  I have been working in AS3 to stream 1080P video on YouTube and video gets start uploading and almost 4-5 minutes of the video has been uploaded successfully and afterwards YouTube shows that stream has been ended, but FFMPEG will never hits on "Exit" or any other method even after waiting for next 10 minutes.

  Below is the method I am using.

  public var _nativeProcessStartupInfo:NativeProcessStartupInfo;
  
  public var _processArgs:Vector.<string>;
  
  public var _process:NativeProcess;
  
  protected function StartVideo_clickHandler(event:MouseEvent):void
  
  {
  
      _nativeProcessStartupInfo.executable = File.applicationStorageDirectory.resolvePath("ffmpeg.exe Path");
  
      _processArgs.push('-re');
  
      _processArgs.push('-i');
  
      _processArgs.push(VideoPath);
  
      _processArgs.push('-vcodec');
  
      _processArgs.push('copy');
  
      _processArgs.push('-acodec');
  
      _processArgs.push('copy');
  
      _processArgs.push('-maxrate');
  
      _processArgs.push('4500k');
  
      _processArgs.push('-bufsize');
  
      _processArgs.push('9000k');
  
      _processArgs.push('-pix_fmt'); 
  
      _processArgs.push('yuv422p');
  
      _processArgs.push('-preset');
  
      _processArgs.push('fast');
  
      _processArgs.push('-ac'); 
  
      _processArgs.push('2');
  
      _processArgs.push('-r'); 
  
      _processArgs.push('30');                            
  
      _processArgs.push('-g');
  
      _processArgs.push('60');                            
  
      _processArgs.push('-ar');
  
      _processArgs.push('44100');
  
      _processArgs.push('-f');
  
      _processArgs.push('flv');                   
  
      _processArgs.push(streamurl+'/'+streamname);
  
      _nativeProcessStartupInfo.arguments = _processArgs;
  
      _process = new NativeProcess();
  
      _process.addEventListener(ProgressEvent.STANDARD_OUTPUT_DATA, onOutputData);
  
      _process.addEventListener(ProgressEvent.STANDARD_ERROR_DATA, progress);
  
      _process.addEventListener(NativeProcessExitEvent.EXIT, onExit);
  
      _process.addEventListener(IOErrorEvent.STANDARD_OUTPUT_IO_ERROR, onIOErrorNativeProcess);
  
      _process.addEventListener(IOErrorEvent.STANDARD_ERROR_IO_ERROR, onIOErrorNativeProcess);
  
      _process.start(_nativeProcessStartupInfo);
  
  }
  
  public function onIOErrorNativeProcess(event:IOErrorEvent):void
  
  {
  
      trace(event.toString());
  
  }
  
  public function onOutputData(event:ProgressEvent):void
  
  {
  
      trace("Got: ", _process.standardOutput.readUTFBytes(_process.standardOutput.bytesAvailable)); 
  
  }
  
  public function progress(e:ProgressEvent):void 
  
  {
  
      trace(e);
  
  }
  
  public function onExit(e:NativeProcessExitEvent):void
  
  {
  
      trace(e);
  
  }
  
  </string>

  I have tried with 720P video too by changing bit rate from 4500k to 2500k which is as per YouTube and it is working fine but with 1080P something not went as per expectation.

  Here are the video details :
  Resolution : 1920*1080
  Data Rate : 3220kbps
  FrameRate : 20
  

  Thanks in advance

• FFmpeg streaming to youtube very slowly

  3 avril 2022, par codingmaster398

  Input :

  


  const runCommand = require('./runCommand')

runCommand(
    'ffmpeg',
    `-threads:v 2 -threads:a 8 -filter_threads 2 -thread_queue_size 512 \
-loop 1 -i ./place.png \
-stream_loop -1 \
-i ./track.mp3 \
-pix_fmt yuv420p -c:v libx264 -qp:v 19 -profile:v high -rc:v cbr_ld_hq -level:v 4.2 -r:v 60 -g:v 120 -bf:v 3 -refs:v 16 -preset fast -f flv rtmp://a.rtmp.youtube.com/live2/${process.env.streamkey}`,
    (data) => console.log(data),
    () => console.log('finished')
  )


  


  Output :

  


  x    
frame=  588 fps=8.7 q=21.0 size=    9000kB time=00:00:22.76 bitrate=3238.2kbits/s speed=0.339x    
frame=  590 fps=8.7 q=19.0 size=    9001kB time=00:00:22.83 bitrate=3229.4kbits/s speed=0.336x    
frame=  597 fps=8.7 q=21.0 size=    9007kB time=00:00:23.11 bitrate=3191.5kbits/s speed=0.337x    
frame=  603 fps=8.7 q=20.0 size=    9012kB time=00:00:23.36 bitrate=3159.3kbits/s speed=0.338x    
frame=  608 fps=8.7 q=21.0 size=    9016kB time=00:00:23.56 bitrate=3133.9kbits/s speed=0.339x    
frame=  614 fps=8.8 q=19.0 size=    9021kB time=00:00:23.80 bitrate=3104.9kbits/s speed=0.339x    
frame=  617 fps=8.7 q=21.0 size=   10702kB time=00:00:23.92 bitrate=3663.8kbits/s speed=0.337x    
frame=  623 fps=8.7 q=20.0 size=   10735kB time=00:00:24.16 bitrate=3638.9kbits/s speed=0.338x    
frame=  629 fps=8.7 q=21.0 size=   10740kB time=00:00:24.40 bitrate=3605.8kbits/s speed=0.338x    
frame=  635 fps=8.7 q=20.0 size=   10745kB time=00:00:24.63 bitrate=3573.1kbits/s speed=0.339x    
frame=  643 fps=8.8 q=20.0 size=   10751kB time=00:00:24.96 bitrate=3527.4kbits/s speed=0.341x    
frame=  646 fps=8.8 q=19.0 size=   10754kB time=00:00:25.08 bitrate=3512.1kbits/s speed=0.341x    
frame=  651 fps=8.8 q=20.0 size=   10758kB time=00:00:25.28 bitrate=3485.6kbits/s speed=0.341x    
frame=  656 fps=8.8 q=21.0 size=   10762kB time=00:00:25.48 bitrate=3459.6kbits/s speed=0.341x    
frame=  658 fps=8.7 q=19.0 size=   10764kB time=00:00:25.56 bitrate=3448.7kbits/s speed=0.338x    
frame=  664 fps=8.7 q=21.0 size=   10769kB time=00:00:25.81 bitrate=3417.9kbits/s speed=0.338x


  


  Why is my FPS so low when streaming to Youtube ?

  


  P.S. The process is using very low memory and CPU, can I sacrifice a bit more for it ?