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• Node JS partial video streaming to safari

  12 juin 2021, par Thor Bilsby

  I'm trying to stream a video directly to a browser using node.js as the backend. I would like the video to be streamed from a specific time and would also like it to be partially streamed since it is a pretty large file. Right now I am doing this with fluent-ffmpeg, like this :

  


  const ffmpeg = require('fluent-ffmpeg');

app.get('/clock/', (req, res) => {
  const videoPath = 'video.mp4'; 
  const now = new Date();

  ffmpeg(videoPath)
    .videoCodec('libx264')
    .withAudioCodec('aac')
    .setStartTime(`${(now.getHours() - 10) % 24}:${now.getMinutes() - 1}:${now.getSeconds()}`)
    .format('mp4')
    .outputOptions(['-frag_duration 100','-movflags frag_keyframe+faststart','-pix_fmt yuv420p'])
    .on('end', () => {
      console.log("File has been converted succesfully");
    })
    .on('error', (err) => {
      if (err.message.toLowerCase().includes('output stream closed')) return;
      console.log('An error occoured', err);
    })
    .pipe(res, { end: true });
});


  


  This will work with Chrome, but Safari just doesn't want to stream it.
I know that the reason why it doesn't work on Safari is that Safari needs the range header. I've therefore tried to do that, but :

  


  

  1. I can't get it to work with fluent-ffmpeg.

  


  2. When I try to do it the "normal" way, without fluent-ffmpeg, it needs to load the whole video file before it plays.

  


  


  The video doesn't need to start at the specific timestamp. It would be nice tho, but I have a workaround for that if it's not possible :)

  


  So my question is : How can I get the code above to work with Safari. And if that is impossible : How can I code something that doesn't need to be loaded fully, before it can be played in Safari browsers, aka. partial video streaming.

  


• Simple Question About Subprocess popen + screen +ffmpeg + youtube-dl

  2 juin 2021, par El_Barto_404

  ffmpeg -i "$(youtube-dl -x -g "https://youtu.be/xhXq9BNndhw")" -f s16le -ac 2 -ar 48000 -acodec pcm_s16le input.raw


  


  can anyone put this inside a popen process after a screen -S Convert ?

  


  I tried already with ' ', with commas.. but nothing

  


  I built a bot on telegram which if you send :

  


  .mandala youtubelink


  


  it takes the link and converts the video from YouTube into a uncompressed file, I need it for a music bot which streams those uncompressed files.

  


  if I run in console :

  


  ffmpeg -i "$(youtube-dl -x -g "https://youtu.be/xhXq9BNndhw")" -f s16le -ac 2 -ar 48000 -acodec pcm_s16le input.raw 


  


  it works but when I try with screen and popen it doesn't.. why ?

  


  @helper.register(pattern=r'.mandala (.+)')
async def mu2342sicbfffffffot(e):
    cheater = e.pattern_match.group(1)
    cheat = cheater
    myorder2224 = ''' "$(youtube-dl -x -g "{}")" '''
    doit = (myorder2224.format(cheater))

    ###  I already try to format the variable 
    ###  and put doit after -i and 
    ###  everything was in '' and commas 
    ###  like 'ffmpeg', 'i*, doit, '-f'...
    ###  and so on but nothing.. but nope doesn't work.

    p = subprocess.call(['screen','-S','onveter',' ffmpeg -i "$(youtube-dl -x -g "https://www.youtube.com/watch?v=Sw5HQbYGoCA")" -f s16le -ac 1 -acodec pcm_s16le -ar 96k  input.pcm'],shell=True)
  await helper.control_panel.send_message(config.chat, "La sto a manna")
  time.sleep(14)
  


  


  I REPEAT ONE MORE TIME :
HOW CAN I USE THAT FFMPEG COMMAND INSIDE A POPEN SUBPROCESS AFTER A Screen -S Convert ?

  


  IF SOMEONE WANT TO KNOW WHY :
Because I want to convert youTube videos to file .raw / .pcm

  


• Not best results for [screen capture] streaming with ffmpeg js

  13 mai 2021, par Nikola Lukic

  Platform : Windows 10
Ffmpeg version 4.4-full_build-www.gyan.dev

  


  This app works fine on macos.

  


  node websocket-relay.js supersecret 8081 8082

http-server --host=https://localhost --port 8080

ffmpeg -f  gdigrab  -i desktop -framerate 30 -video_size 640x480 -f mpegts -codec:v mpeg2video -s 640x480 -rtbufsize 100M -b:v 1000k -bf 0 http://localhost:8081/supersecret


  


  Logs :

  


  frame= 5515 fps= 20 q=31.0 size=    8302kB time=00:04:36.20 
frame= 5526 fps= 20 q=31.0 size=    8317kB time=00:04:36.77 
frame= 5537 fps= 20 q=31.0 size=    8331kB time=00:04:37.31 
frame= 5548 fps= 20 q=24.8 size=    8346kB time=00:04:37.87 
frame= 5558 fps= 20 q=31.0 size=    8352kB time=00:04:38.37 
frame= 5569 fps= 20 q=31.0 size=    8368kB time=00:04:38.91 
frame= 5579 fps= 20 q=31.0 size=    8382kB time=00:04:39.41 
frame= 5590 fps= 20 q=31.0 size=    8397kB time=00:04:39.97 
frame= 5600 fps= 20 q=31.0 size=    8411kB time=00:04:40.48 


  


  Finally in my browser i got something like that :

  


  

  


  Any suggestion !
I am new for ffmpeg topic...