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• ffmpeg Live Input MP4 Error [migrated]

  3 mars 2013, par Brianjs

  Currently I have a mic and a webcam connected to my computer. I am running ffmpeg on CentOS 6.3.

  When I try to record a video without audio by :

  ffmpeg -y -f video4linux2 -t 15 -s 640x480 -r 25 -i /dev/video0 /home/irdb/Desktop/out2.mp4

  it runs perfectly and I get a nice video. However when I try to run with audio included by :

  ffmpeg -y -f video4linux2 -t 15 -s 640x480 -r 25 -i /dev/video0 -f alsa -ar 22050 -ab 64k -ac 2 -i default /home/irdb/Desktop/out2.mp4

  It errors out and prints :

  [NULL @ 0x1e33fc0] Codec is experimental but experimental codecs are not enabled,      see -strict -2
  
  Output #0, mp4, to '/home/irdb/Desktop/out2.mp4':
  
  Stream #0:0: Video: h264, yuv420p, 640x480, q=-1--1, 90k tbn, 25 tbc
  
  Stream #0:1: Audio: none, 22050 Hz, 2 channels, flt, 128 kb/s
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (rawvideo -> libx264)
  
  Stream #1:0 -> #0:1 (pcm_s16le -> aac)
  
  Error while opening encoder for output stream #0:1 - maybe incorrect parameters such    as bit_rate, rate, width or height

  I assume this has to do with the first error as when I use something like mpg it works just fine. However I plan on streaming this live and want mp4 format as that is pretty much supported by all browsers (Firefox with flash fallback).

  Does anyone know how to get the audio to work without additional processing (as I want to stream live and not write to a file eventually).

• Is it possible to use Emgu CV 3.0 to open a live stream with rstp protocol with ffmpeg h264

  1er février 2017, par Rezell Isidro

  Is it possible to use this code in capturing a video stream from an ip camera ?

  Capture cap = new Capture("rtsp://192.168.42.1:554/live");
imageBox1.Image = cap.QueryFrame();

  because my image box is displaying nothing but when i tried viewing it to VLC Media Player the ip address worked. Please help.

  I also tried it with VLCPlugin v2 instead of using imageBox and the ip address still work..

  I also tried it with iSpy and it worked under ffmpeg(h264), maybe the problem is there ? I’m using Visual Studio Ultimate 2010, Emgu CV 3.x. and I’m using Please help. Been working on this for long now.

• why node-media-server not creating sub folders in server while implementing Live video with RTMP ?

  10 mars 2020, par Kadam Saikumar

  I tried this configuration in local it got works and it creates **./media/live/STREAM KEY** folder and storing video data (MP4 file).
  
      If i push the same code in server it doesnot create sub folders **live/STREAMKEY** and i am using node version 8 and linux server and ffmpeg 4.
  
  
  
  
  
  const nodeMediaServerConfig = {
  
        // logType: 3,
  
        rtmp: {
  
          port: 1935,
  
          chunk_size: 60000,
  
          gop_cache: true,
  
          ping: 60,
  
          ping_timeout: 30
  
        },
  
        http: {
  
          port: 8000,
  
          mediaroot: './media',
  
          allow_origin: '*'
  
        },
  
        trans: {
  
          ffmpeg: '/usr/bin/ffmpeg',
  
          tasks: [
  
            {
  
              app: 'live',
  
              ac: 'aac',
  
              mp4: true,
  
              mp4Flags: '[movflags=faststart]'
  
            }
  
          ]
  
        }
  
      };
  
  
  
      var nms = new NodeMediaServer(nodeMediaServerConfig);
  
      nms.run();

  ===============================================================================================
  If i create manually folders will it be useful in server ?