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• ffmpeg cmd not running through nodejs getting error like error initializing filter \'select\' with args \'"not(mod(n\'\n']"

  22 juillet 2019, par Nileshdeora1122

  hello everyone i need your help i’m working on ffmpeg as following by blog post https://contextneutral.com/snippet/how-to-run-ffmpeg-from-inside-of-nodejs
  now i’m doing the same my ffmpeg command running successfully on the terminal but not working with nodejs.
  basicaly i’m trying to run :

  "ffmpeg -loglevel panic -y -i "video.mp4" -frames 1 -q:v 1 -vf "select=not(mod(n\,40)),scale=-1:120,tile=100x1" video_preview.jpg "

  my nodejs code looklike this :

  let ffmpeg = spawn(
  
  'ffmpeg', [
  
  '-i', `${ Inputvideofile }`,
  
  '-y', 
  
  '-frames',1,
  
  '-q:v', '1', 
  
  '-vf', ' "select=not(mod(n\,120)),scale=-1:40,tile=10x1 "  ',
  
  `${ outpputImgstripe }`
  
  ]);
  
  ffmpeg.on('exit', (statusCode) => {
  
      console.log(statusCode)
  
    if (statusCode === 0) {
  
       console.log('conversion successful')
  
    }
  
  })
  
  ffmpeg
  
    .stderr
  
    .on('data', (err) => {
  
      console.log('err:', new String(err))
  
    })
  
  
  
  module.exports = router;

  The error im getting is :

  Error initializing filter \'select\' with args \'"not(mod(n\'\n']
  
  err: [String: 'Error reinitializing filters!\nFailed to inject frame into filter network: Invalid argument\nError while processing the decoded data for stream #0:0\n']
  
  err: [String: 'Conversion failed!\n']
  
  1

  i think the error is :

  '-vf', ' "select=not(mod(n\,120)),scale=-1:40,tile=10x1 "  ',

  but don’t know how to solve pls help me

• ffmpeg 4.1.4 wav to mp3 error of "deprecated pixel format used" [on hold]

  26 août 2019, par yang jia

  [swscaler @ 0xc946d000] deprecated pixel format used, make sure you did set range correctly
  
  
  
   [mp3 @ 0xc9621600] Frame rate very high for a muxer not efficiently supporting it.
  
  
  
      Please consider specifying a lower framerate, a different muxer or -vsync 2
  
  
  
   [auto_resampler_0 @ 0xd8e73be0] [SWR @ 0xc8058000] Output channel layout '6 channels (FLC+BC+SL+SR+TC+TFL)' is not supported
  
  
  
  [auto_resampler_0 @ 0xd8e73be0] Failed to configure output pad on auto_resampler_0
  
  
  
  Error reinitializing filters!
  
  
  
  Failed to inject frame into filter network: Invalid argument
  
   Error while processing the decoded data for stream #0:0
  
   --------- beginning of crash
  
  2019-02-26 16:04:58.368 27737-27737/com.blplayer.jbl.blplayer A/libc: Fatal signal 7 (SIGBUS), code 1, fault addr 0xc5ca in tid 27737 (er.jbl.blplayer)

  cmd

   ffmpeg -i test.wav  -acodec libmp3lame -ar 8000 -ac 2 -y wav2mp3.mp3

  This is the log :

  

  then on Mac it success egg
  ffmpeg -i input.wav -vn -ar 44100 -ac 2 -b:a 192k output.mp3

  Guessed Channel Layout for Input Stream #0.0 : stereo
  Input #0, wav, from ’input.wav’ :
  Metadata :
  encoder : Lavf58.20.100
  Duration : 00:02:08.29, bitrate : 256 kb/s
  Stream #0:0 : Audio : pcm_s16le (1[0][0][0] / 0x0001), 8000 Hz, stereo, s16, 256 kb/s
  Stream mapping :
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> mp3 (libmp3lame))

  Output #0, mp3, to ’output.mp3’ :
  Metadata :
  TSSE : Lavf58.31.104
  Stream #0:0 : Audio : mp3 (libmp3lame), 44100 Hz, stereo, s16p, 192 kb/s
  Metadata :
  encoder : Lavc58.55.101 libmp3lame

  but on android it gets error

• Connection timed out RTSP stream exited with error"

  30 septembre 2019, par fw08

  I am building an web application on AWS Cloud that requires to stream a recorded/live video over the global network. I purchased an IP camera(GV-AVD4710) and NVR(GV-SNVR0811) for our application. In future I need to stream no. of cameras on my application.

  While Camera in use With NVR, I have connected the NVR in our local network and the camera at channel_1 of NVR. Now the lets assume NVR is getting an IP of 192.168.1.203. So for rtsp streaming URL for channel_1 will be "rtsp://id:password@192.168.1.203:554/ch1" as per manufacturer’s specification. For camera streaming I am using "ffmpeg" multimedia framework (https://github.com/xpcrts/Steaming-IP-Camera-Nodejs ). So it is working fine. I tested it and working well in local network. Code that is running on the server

  Stream = require('node-rtsp-stream')
  
  stream = new Stream({
  
      name: 'name',
  
      streamUrl: 'rtsp://ID:PASSWORD@abcxyz.com:554/ch1',
  
      wsPort:3000,
  
      ffmpegOptions: {
  
          '-stats': '',
  
          '-r': 30
  
      }
  
  })

  and Code running at client side which is independent of any plug-ins

  <div>
  
         <canvas width="auto" height="auto"></canvas>
  
         <code class="echappe-js">&lt;script type=&quot;text/javascript&quot; src='http://stackoverflow.com/feeds/tag/jsmpeg.min.js'&gt;&lt;/script&gt;
         
  &lt;script type=&quot;text/javascript&quot;&gt;<br />
  
              var canvas = document.getElementById('chanel1');<br />
  
              var websocket = new WebSocket(&quot;ws://34.202.222.188:3000&quot;);<br />
  
              var player= new jsmpeg(websocket, {canvas:canvas, autoplay:true, loop:true})<br />
  
         &lt;/script&gt;
  

  When I made this IP address available for public, and then the problem begins. It is not working and giving an error :

   "[tcp @ 0x563911f0a340] Connection to tcp://192.168.1.205:554?timeout=0 failed: Connection timed out
  
  rtsp://admin:admin@192.168.1.205: Connection timed out RTSP stream exited with error"

  In Camera Without NVR, I connected camera directly to our local network and so got an rtsp url like rtsp ://id:password@192.168.1.205/media/video1. Same happens again. Works well in local, but not working when I am making this available on public network.

  How can stream video over global network ? Is it possible to implement these logic using ffmpeg multimedia framework ? Does VLC can help in these cases ?

  I would like to reiterate that, In future there are no. of cameras needs to be stream.