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• PHP Ajax XMLHttpRequest popen live progress

  21 février 2016, par John R

  I’m trying to output live : the ffmpeg progress

  It works great when I execute the php file alone : many lines with text appearing one after an other...

  ••• But when it’s a XMLHttpRequest context, the output is 1 line empty

  PHP working when not in AJAX situation :

  ini_set("output_buffering", "0");
  
  ob_implicit_flush(true);
  
  $call_mp4 = ' __FFMPEG Command HERE__ ';
  
  $proc = popen($call_mp4, 'r');
  
  while (!feof($proc)) {
  
      echo '['.date("i:s")."] ".fread($proc, 4096).'<br />';ob_flush();flush();
  
  }

  Does someone know why in AJAX it’s blank and only 1 line ?
  how can this be fixed ?

  Regards

• Working example on live streaming using FFMPEG+MP4Box+Dash.js

  27 février 2017, par BartMao

  I’m stucked on this issue for a couple of days, couldn’t find a perfect working example.

  Here’s my current method :

  Step 1.

  ffmpeg -re -i sample.mp4 -threads 0 -y \
  
  -map 0:1 -vn -acodec aac -strict -2 -ar 48000 -ac 2 \
  
  -f segment -segment_time 4 -segment_format mpegts Dash\audio_%d.ts \
  
  -map 0:0 -vcodec libx264 -vprofile baseline -preset veryfast \
  
  -s 640x360 -vb 512k -bufsize 1024k -maxrate 512k -level 31 -keyint_min 25 -g 25 \
  
  -sc_threshold 0 -an -bsf h264_mp4toannexb -flags -global_header \
  
  -f segment -segment_time 4 -segment_format mpegts Dash\video_%d.ts

  Step 2.

  mp4box -add Dash\audio_%d.ts Output\audio_%d.ts.mp4
  
  mp4box -add Dash\video_%d.ts Output\video_%d.ts.mp4

  Step 3.

  mp4box -dash-ctx Output\dash-live.txt -dash 4000 \
  
  -rap -ast-offset 12 -no-frags-default -bs-switching no \
  
  -min-buffer 4000 -url-template -time-shift 1800 \
  
  -segment-name live_$RepresentationID$_ -out Output\live \
  
  -dynamic -mpd-refresh 2 -subsegs-per-sidx -1 Output\audio_%d.ts.mp4:id=audio Output\video_%d.ts.mp4:id=video

  I played the live.mpd generated using Dash.js, the player paused a long time before actually playing, and freeze every time getting a new m4s file.

  Are there any wrong on my commands ? Or it would be great if can provide any other good examples.

• How to play live h264 stream with python [closed]

  27 juillet 2020, par vkh53121Acuoly.com

  I have a socket that listen to h264 stream, I can save this stream to file and play it with ffplay.

  


  This not rtp/rtsp that wraps h264 .that only h264.

  


  I want to watch this stream live, not save to file and after that run ffplay.

  


  How can I do that with python,so that work on windows and linux