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• ffmpeg fails to connect a second camera when run using python thread

  1er juin 2023, par LemonJumps

  I'm starting ffmpeg dshow -> rawvideo over pipe in python thread, see code below

  


      def run(self):
        proc = subprocess.Popen(
            [FFMPEG_DIR + "ffmpeg", "-hide_banner", "-f", "dshow", 
                "-video_size", str(self.resolution[0]) + "x" + str(self.resolution[1]), # select resolution
                "-framerate", str(self.framerate), # select framerate
                "-i", "video=" + self.device, # select device
                "-f", "rawvideo", "-pix_fmt", "bgr24", "pipe:"], # output to pipe
            stdout = subprocess.PIPE)
        
        buf = b''
        
        while True:
            outs = proc.stdout.read(self.resolution[0] * self.resolution[1] *3)
            buf += outs
            
            if len(buf) >= (self.resolution[0] * self.resolution[1] *3):
                with self.lock:
                    self.frame = buf[0:self.resolution[0] * self.resolution[1] *3] 
                    self.cnt += 1
                    
                buf = b''
                
            if self.endEvent.isSet():
                proc.kill()
                return


  


  I am using alternative name as camera name, both cameras are the same model.
both devices name and alternative name :

  


  ('ACR010 USB Webcam', '@device_pnp_\\\\?\\usb#vid_0c45&pid_636a&mi_00#8&83c432e&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\\global')

  


  ('ACR010 USB Webcam', '@device_pnp_\\\\?\\usb#vid_0c45&pid_636a&mi_00#8&34de11d9&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\\global')

  


  when I run this code for each camera individually it works flawlessly.
But when I run this for both cameras at the same time, the code results this error :


  


  The "Could not run graph" sounds like ffmpeg can't open multiple devices, or isn't allowed by windows, or maybe there's a token that gets reused because it's all within a single process ?

  


  What could be really causing this error and how can I mitigate it ?

  


• With ffmpeg encoded video (HEVC or H264) : VMAF nan

  3 juin 2020, par ringola27

  I am able to calculate VMAF for the videos encoded with VP9 but not for the videos encoded with HEVC and H264.

  



  I am getting the output :

  



  VMAF score: nan

  



  For the Command Line : 
ffmpeg -i netflix200kHEVC.mp4 -i netflixboxing.y4m -lavfi "libvmaf=model_path=/usr/local/share/model/vmaf_v0.6.1.pkl" -f null -

  



  Do you know this kind of problem ? How can I solve it ?

  



      ffmpeg -i netflix200kHEVC.mp4 -i netflixboxing.y4m -lavfi "libvmaf=model_path=/usr/local/share/model/vmaf_v0.6.1.pkl" -f null -
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.3 (clang-1103.0.32.62)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2-with-options_2 --enable-shared --cc=clang --host-cflags=-fno-stack-check --host-ldflags= --enable-gpl --enable-libaom --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --disable-libjack --disable-indev=jack --enable-opencl --enable-videotoolbox --disable-htmlpages --enable-libvmaf --enable-version3
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'netflix200kHEVC.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:04.23, start: 0.000000, bitrate: 2070 kb/s
    Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, progressive), 4096x2160 [SAR 1:1 DAR 256:135], 2058 kb/s, 60 fps, 60 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
Input #1, yuv4mpegpipe, from 'netflixboxing.y4m':
  Duration: 00:00:04.23, start: 0.000000, bitrate: 12740202 kb/s
    Stream #1:0: Video: rawvideo (Y3[11][10] / 0xA0B3359), yuv420p10le(progressive), 4096x2160, SAR 1:1 DAR 256:135, 60 fps, 60 tbr, 60 tbn, 60 tbc
Stream mapping:
  Stream #0:0 (hevc) -> libvmaf:main
  Stream #1:0 (rawvideo) -> libvmaf:reference
  libvmaf -> Stream #0:0 (wrapped_avframe)
Press [q] to stop, [?] for help
frame=    0 fps=0.0 q=0.0 size=N/A time=-577014:32:22.77 bitrate=N/A speed=N/A  Output #0, null, to 'pipe:':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf58.29.100
    Stream #0:0: Video: wrapped_avframe, yuv420p10le, 4096x2160 [SAR 1:1 DAR 256:135], q=2-31, 200 kb/s, 60 fps, 60 tbn, 60 tbc (default)
    Metadata:
      encoder         : Lavc58.54.100 wrapped_avframe
frame=    2 fps=1.4 q=-0.0 size=N/A time=00:00:00.03 bitrate=N/A speed=0.0229x  frame=    4 fps=2.0 q=-0.0 size=N/A time=00:00:00.06 bitrate=N/A speed=0.0325x  frame=    5 fps=1.7 q=-0.0 size=N/A time=00:00:00.08 bitrate=N/A speed=0.0281x  frame=    6 fps=1.7 q=-0.0 size=N/A time=00:00:00.10 bitrate=N/A speed=0.0279x  frame=    7 fps=1.0 q=-0.0 size=N/A time=00:00:00.11 bitrate=N/A speed=0.0162x  frame=    8 fps=1.0 q=-0.0 size=N/A time=00:00:00.13 bitrate=N/A speed=0.0163x  frame=   10 fps=1.1 q=-0.0 size=N/A time=00:00:00.16 bitrate=N/A speed=0.0191x  frame=   11 fps=0.9 q=-0.0 size=N/A time=00:00:00.18 bitrate=N/A speed=0.0156x  frame=   12 fps=1.0 q=-0.0 size=N/A time=00:00:00.20 bitrate=N/A speed=0.0161x  frame=   14 fps=1.1 q=-0.0 size=N/A time=00:00:00.23 bitrate=N/A speed=0.0179x  frame=   15 fps=1.0 q=-0.0 size=N/A time=00:00:00.25 bitrate=N/A speed=0.0169x  frame=   16 fps=1.0 q=-0.0 size=N/A time=00:00:00.26 bitrate=N/A speed=0.0174x  frame=   18 fps=1.1 q=-0.0 size=N/A time=00:00:00.30 bitrate=N/A speed=0.0189x  frame=   19 fps=1.1 q=-0.0 size=N/A time=00:00:00.31 bitrate=N/A speed=0.0181x  frame=   20 fps=1.1 q=-0.0 size=N/A time=00:00:00.33 bitrate=N/A speed=0.0183x  frame=   22 fps=1.2 q=-0.0 size=N/A time=00:00:00.36 bitrate=N/A speed=0.0195x  frame=   23 fps=1.1 q=-0.0 size=N/A time=00:00:00.38 bitrate=N/A speed=0.0188x  frame=   24 fps=1.1 q=-0.0 size=N/A time=00:00:00.40 bitrate=N/A speed=0.019x   frame=   26 fps=1.2 q=-0.0 size=N/A time=00:00:00.43 bitrate=N/A speed=0.0199x  frame=   27 fps=1.2 q=-0.0 size=N/A time=00:00:00.45 bitrate=N/A speed=0.0194x  frame=   28 fps=1.2 q=-0.0 size=N/A time=00:00:00.46 bitrate=N/A speed=0.0194x  frame=   30 fps=1.2 q=-0.0 size=N/A time=00:00:00.50 bitrate=N/A speed=0.0203x  frame=   31 fps=1.2 q=-0.0 size=N/A time=00:00:00.51 bitrate=N/A speed=0.0199x  frame=   32 fps=1.2 q=-0.0 size=N/A time=00:00:00.53 bitrate=N/A speed=0.0199x  frame=   33 fps=1.2 q=-0.0 size=N/A time=00:00:00.55 bitrate=N/A speed=0.0202x  frame=   35 fps=1.2 q=-0.0 size=N/A time=00:00:00.58 bitrate=N/A speed=0.0201x  frame=   37 fps=1.2 q=-0.0 size=N/A time=00:00:00.61 bitrate=N/A speed=0.0202x  frame=   39 fps=1.2 q=-0.0 size=N/A time=00:00:00.65 bitrate=N/A speed=0.0203x  frame=   40 fps=1.2 q=-0.0 size=N/A time=00:00:00.66 bitrate=N/A speed=0.0203x  frame=   41 fps=1.2 q=-0.0 size=N/A time=00:00:00.68 bitrate=N/A speed=0.0205x  frame=   43 fps=1.2 q=-0.0 size=N/A time=00:00:00.71 bitrate=N/A speed=0.0206x  frame=   44 fps=1.2 q=-0.0 size=N/A time=00:00:00.73 bitrate=N/A speed=0.0205x  frame=   46 fps=1.3 q=-0.0 size=N/A time=00:00:00.76 bitrate=N/A speed=0.0211x  frame=   47 fps=1.3 q=-0.0 size=N/A time=00:00:00.78 bitrate=N/A speed=0.0209x  frame=   48 fps=1.2 q=-0.0 size=N/A time=00:00:00.80 bitrate=N/A speed=0.0208x  frame=   50 fps=1.3 q=-0.0 size=N/A time=00:00:00.83 bitrate=N/A speed=0.0212x  frame=   51 fps=1.3 q=-0.0 size=N/A time=00:00:00.85 bitrate=N/A speed=0.021x   frame=   52 fps=1.3 q=-0.0 size=N/A time=00:00:00.86 bitrate=N/A speed=0.0209x  frame=   54 fps=1.3 q=-0.0 size=N/A time=00:00:00.90 bitrate=N/A speed=0.0213x  frame=   55 fps=1.3 q=-0.0 size=N/A time=00:00:00.91 bitrate=N/A speed=0.0212x  frame=   56 fps=1.3 q=-0.0 size=N/A time=00:00:00.93 bitrate=N/A speed=0.021x   frame=   57 fps=1.3 q=-0.0 size=N/A time=00:00:00.95 bitrate=N/A speed=0.0211x  frame=   59 fps=1.3 q=-0.0 size=N/A time=00:00:00.98 bitrate=N/A speed=0.0212x  frame=   60 fps=1.3 q=-0.0 size=N/A time=00:00:01.00 bitrate=N/A speed=0.0211x  frame=   61 fps=1.3 q=-0.0 size=N/A time=00:00:01.01 bitrate=N/A speed=0.0212x  frame=   63 fps=1.3 q=-0.0 size=N/A time=00:00:01.05 bitrate=N/A speed=0.0212x  frame=   64 fps=1.3 q=-0.0 size=N/A time=00:00:01.06 bitrate=N/A speed=0.0211x  frame=   65 fps=1.3 q=-0.0 size=N/A time=00:00:01.08 bitrate=N/A speed=0.0212x  frame=   67 fps=1.3 q=-0.0 size=N/A time=00:00:01.11 bitrate=N/A speed=0.0213x  frame=   68 fps=1.3 q=-0.0 size=N/A time=00:00:01.13 bitrate=N/A speed=0.0212x  frame=   69 fps=1.3 q=-0.0 size=N/A time=00:00:01.15 bitrate=N/A speed=0.0212x  frame=   71 fps=1.3 q=-0.0 size=N/A time=00:00:01.18 bitrate=N/A speed=0.0213x  frame=   72 fps=1.3 q=-0.0 size=N/A time=00:00:01.20 bitrate=N/A speed=0.0212x  frame=   73 fps=1.3 q=-0.0 size=N/A time=00:00:01.21 bitrate=N/A speed=0.0213x  frame=   75 fps=1.3 q=-0.0 size=N/A time=00:00:01.25 bitrate=N/A speed=0.0214x  frame=   76 fps=1.3 q=-0.0 size=N/A time=00:00:01.26 bitrate=N/A speed=0.0213x  frame=   77 fps=1.3 q=-0.0 size=N/A time=00:00:01.28 bitrate=N/A speed=0.0213x  frame=   79 fps=1.3 q=-0.0 size=N/A time=00:00:01.31 bitrate=N/A speed=0.0215x  frame=   80 fps=1.3 q=-0.0 size=N/A time=00:00:01.33 bitrate=N/A speed=0.0214x  frame=   81 fps=1.3 q=-0.0 size=N/A time=00:00:01.35 bitrate=N/A speed=0.0214x  frame=   83 fps=1.3 q=-0.0 size=N/A time=00:00:01.38 bitrate=N/A speed=0.0216x  frame=   84 fps=1.3 q=-0.0 size=N/A time=00:00:01.40 bitrate=N/A speed=0.0214x  frame=   85 fps=1.3 q=-0.0 size=N/A time=00:00:01.41 bitrate=N/A speed=0.0214x  frame=   87 fps=1.3 q=-0.0 size=N/A time=00:00:01.45 bitrate=N/A speed=0.0215x  frame=   88 fps=1.3 q=-0.0 size=N/A time=00:00:01.46 bitrate=N/A speed=0.0214x  frame=   89 fps=1.3 q=-0.0 size=N/A time=00:00:01.48 bitrate=N/A speed=0.0215x  frame=   91 fps=1.3 q=-0.0 size=N/A time=00:00:01.51 bitrate=N/A speed=0.0216x  frame=   92 fps=1.3 q=-0.0 size=N/A time=00:00:01.53 bitrate=N/A speed=0.0214x  frame=   94 fps=1.3 q=-0.0 size=N/A time=00:00:01.56 bitrate=N/A speed=0.0217x  frame=   95 fps=1.3 q=-0.0 size=N/A time=00:00:01.58 bitrate=N/A speed=0.0216x  frame=   96 fps=1.3 q=-0.0 size=N/A time=00:00:01.60 bitrate=N/A speed=0.0213x  frame=   98 fps=1.3 q=-0.0 size=N/A time=00:00:01.63 bitrate=N/A speed=0.0216x  frame=   99 fps=1.3 q=-0.0 size=N/A time=00:00:01.65 bitrate=N/A speed=0.0216x  frame=  100 fps=1.3 q=-0.0 size=N/A time=00:00:01.66 bitrate=N/A speed=0.0214x  frame=  101 fps=1.3 q=-0.0 size=N/A time=00:00:01.68 bitrate=N/A speed=0.0214x  frame=  103 fps=1.3 q=-0.0 size=N/A time=00:00:01.71 bitrate=N/A speed=0.0216x  frame=  104 fps=1.3 q=-0.0 size=N/A time=00:00:01.73 bitrate=N/A speed=0.0214x  frame=  105 fps=1.3 q=-0.0 size=N/A time=00:00:01.75 bitrate=N/A speed=0.0214x  frame=  107 fps=1.3 q=-0.0 size=N/A time=00:00:01.78 bitrate=N/A speed=0.0216x  frame=  108 fps=1.3 q=-0.0 size=N/A time=00:00:01.80 bitrate=N/A speed=0.0214x  frame=  110 fps=1.3 q=-0.0 size=N/A time=00:00:01.83 bitrate=N/A speed=0.0216x  frame=  111 fps=1.3 q=-0.0 size=N/A time=00:00:01.85 bitrate=N/A speed=0.0216x  frame=  112 fps=1.3 q=-0.0 size=N/A time=00:00:01.86 bitrate=N/A speed=0.0215x  frame=  114 fps=1.3 q=-0.0 size=N/A time=00:00:01.90 bitrate=N/A speed=0.0217x  frame=  115 fps=1.3 q=-0.0 size=N/A time=00:00:01.91 bitrate=N/A speed=0.0216x  frame=  116 fps=1.3 q=-0.0 size=N/A time=00:00:01.93 bitrate=N/A speed=0.0215x  frame=  117 fps=1.3 q=-0.0 size=N/A time=00:00:01.95 bitrate=N/A speed=0.0216x  frame=  119 fps=1.3 q=-0.0 size=N/A time=00:00:01.98 bitrate=N/A speed=0.0216x  frame=  120 fps=1.3 q=-0.0 size=N/A time=00:00:02.00 bitrate=N/A speed=0.0215x  frame=  121 fps=1.3 q=-0.0 size=N/A time=00:00:02.01 bitrate=N/A speed=0.0215x  frame=  123 fps=1.3 q=-0.0 size=N/A time=00:00:02.05 bitrate=N/A speed=0.0216x  frame=  124 fps=1.3 q=-0.0 size=N/A time=00:00:02.06 bitrate=N/A speed=0.0216x  frame=  125 fps=1.3 q=-0.0 size=N/A time=00:00:02.08 bitrate=N/A speed=0.0216x  frame=  127 fps=1.3 q=-0.0 size=N/A time=00:00:02.11 bitrate=N/A speed=0.0216x  frame=  128 fps=1.3 q=-0.0 size=N/A time=00:00:02.13 bitrate=N/A speed=0.0216x  frame=  129 fps=1.3 q=-0.0 size=N/A time=00:00:02.15 bitrate=N/A speed=0.0216x  frame=  131 fps=1.3 q=-0.0 size=N/A time=00:00:02.18 bitrate=N/A speed=0.0216x  frame=  132 fps=1.3 q=-0.0 size=N/A time=00:00:02.20 bitrate=N/A speed=0.0216x  frame=  133 fps=1.3 q=-0.0 size=N/A time=00:00:02.21 bitrate=N/A speed=0.0216x  frame=  135 fps=1.3 q=-0.0 size=N/A time=00:00:02.25 bitrate=N/A speed=0.0217x  frame=  136 fps=1.3 q=-0.0 size=N/A time=00:00:02.26 bitrate=N/A speed=0.0216x  frame=  137 fps=1.3 q=-0.0 size=N/A time=00:00:02.28 bitrate=N/A speed=0.0216x  frame=  139 fps=1.3 q=-0.0 size=N/A time=00:00:02.31 bitrate=N/A speed=0.0217x  frame=  140 fps=1.3 q=-0.0 size=N/A time=00:00:02.33 bitrate=N/A speed=0.0216x  frame=  141 fps=1.3 q=-0.0 size=N/A time=00:00:02.35 bitrate=N/A speed=0.0215x  frame=  143 fps=1.3 q=-0.0 size=N/A time=00:00:02.38 bitrate=N/A speed=0.0216x  frame=  144 fps=1.3 q=-0.0 size=N/A time=00:00:02.40 bitrate=N/A speed=0.0216x  frame=  145 fps=1.3 q=-0.0 size=N/A time=00:00:02.41 bitrate=N/A speed=0.0216x  frame=  147 fps=1.3 q=-0.0 size=N/A time=00:00:02.45 bitrate=N/A speed=0.0216x  frame=  148 fps=1.3 q=-0.0 size=N/A time=00:00:02.46 bitrate=N/A speed=0.0216x  frame=  149 fps=1.3 q=-0.0 size=N/A time=00:00:02.48 bitrate=N/A speed=0.0215x  frame=  151 fps=1.3 q=-0.0 size=N/A time=00:00:02.51 bitrate=N/A speed=0.0216x  frame=  152 fps=1.3 q=-0.0 size=N/A time=00:00:02.53 bitrate=N/A speed=0.0216x  frame=  153 fps=1.3 q=-0.0 size=N/A time=00:00:02.55 bitrate=N/A speed=0.0215x  frame=  155 fps=1.3 q=-0.0 size=N/A time=00:00:02.58 bitrate=N/A speed=0.0216x  frame=  156 fps=1.3 q=-0.0 size=N/A time=00:00:02.60 bitrate=N/A speed=0.0215x  frame=  157 fps=1.3 q=-0.0 size=N/A time=00:00:02.61 bitrate=N/A speed=0.0215x  frame=  159 fps=1.3 q=-0.0 size=N/A time=00:00:02.65 bitrate=N/A speed=0.0216x  frame=  160 fps=1.3 q=-0.0 size=N/A time=00:00:02.66 bitrate=N/A speed=0.0216x  frame=  161 fps=1.3 q=-0.0 size=N/A time=00:00:02.68 bitrate=N/A speed=0.0215x  frame=  163 fps=1.3 q=-0.0 size=N/A time=00:00:02.71 bitrate=N/A speed=0.0216x  frame=  164 fps=1.3 q=-0.0 size=N/A time=00:00:02.73 bitrate=N/A speed=0.0216x  frame=  165 fps=1.3 q=-0.0 size=N/A time=00:00:02.75 bitrate=N/A speed=0.0215x  frame=  167 fps=1.3 q=-0.0 size=N/A time=00:00:02.78 bitrate=N/A speed=0.0217x  frame=  168 fps=1.3 q=-0.0 size=N/A time=00:00:02.80 bitrate=N/A speed=0.0216x  frame=  169 fps=1.3 q=-0.0 size=N/A time=00:00:02.81 bitrate=N/A speed=0.0215x  frame=  171 fps=1.3 q=-0.0 size=N/A time=00:00:02.85 bitrate=N/A speed=0.0216x  frame=  172 fps=1.3 q=-0.0 size=N/A time=00:00:02.86 bitrate=N/A speed=0.0216x  frame=  173 fps=1.3 q=-0.0 size=N/A time=00:00:02.88 bitrate=N/A speed=0.0215x  frame=  175 fps=1.3 q=-0.0 size=N/A time=00:00:02.91 bitrate=N/A speed=0.0216x  frame=  176 fps=1.3 q=-0.0 size=N/A time=00:00:02.93 bitrate=N/A speed=0.0215x  frame=  177 fps=1.3 q=-0.0 size=N/A time=00:00:02.95 bitrate=N/A speed=0.0215x  frame=  179 fps=1.3 q=-0.0 size=N/A time=00:00:02.98 bitrate=N/A speed=0.0216x  frame=  180 fps=1.3 q=-0.0 size=N/A time=00:00:03.00 bitrate=N/A speed=0.0215x  frame=  181 fps=1.3 q=-0.0 size=N/A time=00:00:03.01 bitrate=N/A speed=0.0215x  frame=  183 fps=1.3 q=-0.0 size=N/A time=00:00:03.05 bitrate=N/A speed=0.0216x  frame=  184 fps=1.3 q=-0.0 size=N/A time=00:00:03.06 bitrate=N/A speed=0.0215x  frame=  185 fps=1.3 q=-0.0 size=N/A time=00:00:03.08 bitrate=N/A speed=0.0215x  frame=  187 fps=1.3 q=-0.0 size=N/A time=00:00:03.11 bitrate=N/A speed=0.0216x  frame=  188 fps=1.3 q=-0.0 size=N/A time=00:00:03.13 bitrate=N/A speed=0.0215x  frame=  189 fps=1.3 q=-0.0 size=N/A time=00:00:03.15 bitrate=N/A speed=0.0215x  frame=  191 fps=1.3 q=-0.0 size=N/A time=00:00:03.18 bitrate=N/A speed=0.0216x  frame=  192 fps=1.3 q=-0.0 size=N/A time=00:00:03.20 bitrate=N/A speed=0.0215x  frame=  193 fps=1.3 q=-0.0 size=N/A time=00:00:03.21 bitrate=N/A speed=0.0215x  frame=  195 fps=1.3 q=-0.0 size=N/A time=00:00:03.25 bitrate=N/A speed=0.0216x  frame=  196 fps=1.3 q=-0.0 size=N/A time=00:00:03.26 bitrate=N/A speed=0.0215x  frame=  197 fps=1.3 q=-0.0 size=N/A time=00:00:03.28 bitrate=N/A speed=0.0215x  frame=  198 fps=1.3 q=-0.0 size=N/A time=00:00:03.30 bitrate=N/A speed=0.0215x  frame=  200 fps=1.3 q=-0.0 size=N/A time=00:00:03.33 bitrate=N/A speed=0.0215x  frame=  201 fps=1.3 q=-0.0 size=N/A time=00:00:03.35 bitrate=N/A speed=0.0214x  frame=  202 fps=1.3 q=-0.0 size=N/A time=00:00:03.36 bitrate=N/A speed=0.0215x  frame=  204 fps=1.3 q=-0.0 size=N/A time=00:00:03.40 bitrate=N/A speed=0.0215x  frame=  205 fps=1.3 q=-0.0 size=N/A time=00:00:03.41 bitrate=N/A speed=0.0215x  frame=  206 fps=1.3 q=-0.0 size=N/A time=00:00:03.43 bitrate=N/A speed=0.0215x  frame=  208 fps=1.3 q=-0.0 size=N/A time=00:00:03.46 bitrate=N/A speed=0.0215x  frame=  209 fps=1.3 q=-0.0 size=N/A time=00:00:03.48 bitrate=N/A speed=0.0214x  frame=  210 fps=1.3 q=-0.0 size=N/A time=00:00:03.50 bitrate=N/A speed=0.0214x  frame=  212 fps=1.3 q=-0.0 size=N/A time=00:00:03.53 bitrate=N/A speed=0.0214x  frame=  213 fps=1.3 q=-0.0 size=N/A time=00:00:03.55 bitrate=N/A speed=0.0214x  frame=  214 fps=1.3 q=-0.0 size=N/A time=00:00:03.56 bitrate=N/A speed=0.0214x  frame=  216 fps=1.3 q=-0.0 size=N/A time=00:00:03.60 bitrate=N/A speed=0.0214x  frame=  217 fps=1.3 q=-0.0 size=N/A time=00:00:03.61 bitrate=N/A speed=0.0214x  frame=  218 fps=1.3 q=-0.0 size=N/A time=00:00:03.63 bitrate=N/A speed=0.0214x  frame=  220 fps=1.3 q=-0.0 size=N/A time=00:00:03.66 bitrate=N/A speed=0.0214x  frame=  221 fps=1.3 q=-0.0 size=N/A time=00:00:03.68 bitrate=N/A speed=0.0214x  frame=  222 fps=1.3 q=-0.0 size=N/A time=00:00:03.70 bitrate=N/A speed=0.0214x  frame=  224 fps=1.3 q=-0.0 size=N/A time=00:00:03.73 bitrate=N/A speed=0.0214x  frame=  225 fps=1.3 q=-0.0 size=N/A time=00:00:03.75 bitrate=N/A speed=0.0213x  frame=  226 fps=1.3 q=-0.0 size=N/A time=00:00:03.76 bitrate=N/A speed=0.0214x  frame=  228 fps=1.3 q=-0.0 size=N/A time=00:00:03.80 bitrate=N/A speed=0.0214x  frame=  229 fps=1.3 q=-0.0 size=N/A time=00:00:03.81 bitrate=N/A speed=0.0213x  frame=  231 fps=1.3 q=-0.0 size=N/A time=00:00:03.85 bitrate=N/A speed=0.0214x  frame=  232 fps=1.3 q=-0.0 size=N/A time=00:00:03.86 bitrate=N/A speed=0.0214x  frame=  233 fps=1.3 q=-0.0 size=N/A time=00:00:03.88 bitrate=N/A speed=0.0213x  frame=  235 fps=1.3 q=-0.0 size=N/A time=00:00:03.91 bitrate=N/A speed=0.0214x  frame=  236 fps=1.3 q=-0.0 size=N/A time=00:00:03.93 bitrate=N/A speed=0.0214x  frame=  237 fps=1.3 q=-0.0 size=N/A time=00:00:03.95 bitrate=N/A speed=0.0213x  frame=  238 fps=1.3 q=-0.0 size=N/A time=00:00:03.96 bitrate=N/A speed=0.0213x  frame=  240 fps=1.3 q=-0.0 size=N/A time=00:00:04.00 bitrate=N/A speed=0.0213x  frame=  241 fps=1.3 q=-0.0 size=N/A time=00:00:04.01 bitrate=N/A speed=0.0213x  frame=  242 fps=1.3 q=-0.0 size=N/A time=00:00:04.03 bitrate=N/A speed=0.0213x  frame=  244 fps=1.3 q=-0.0 size=N/A time=00:00:04.06 bitrate=N/A speed=0.0213x  frame=  245 fps=1.3 q=-0.0 size=N/A time=00:00:04.08 bitrate=N/A speed=0.0213x  frame=  246 fps=1.3 q=-0.0 size=N/A time=00:00:04.10 bitrate=N/A speed=0.0213x  frame=  248 fps=1.3 q=-0.0 size=N/A time=00:00:04.13 bitrate=N/A speed=0.0214x  frame=  249 fps=1.3 q=-0.0 size=N/A time=00:00:04.15 bitrate=N/A speed=0.0213x  frame=  252 fps=1.3 q=-0.0 size=N/A time=00:00:04.20 bitrate=N/A speed=0.0214x  frame=  253 fps=1.3 q=-0.0 size=N/A time=00:00:04.21 bitrate=N/A speed=0.0213x  frame=  254 fps=1.3 q=-0.0 Lsize=N/A time=00:00:04.23 bitrate=N/A speed=0.0214x    
video:133kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libvmaf @ 0x7ff05a61b300] VMAF score: nan


  


• Cant Record Stream Using MediaRecorder In Server ?

  13 avril 2022, par Riyad Zaigirdar

  First I am trying to make a Webrtc peer connection from the browser to the server using SFU model.

  


  Here is the post request which makes the webrtc peer connection from the browser to the server(SFU)

  


  app.post("/broadcast", async ({ body }, res) => {
  const peer = new webrtc.RTCPeerConnection({
    iceServers: [
      {
        urls: "stun:stun.stunprotocol.org",
      },
    ],
  });
  peer.ontrack = (e) => handleTrackEvent(e, peer); <-- Important
  const desc = new webrtc.RTCSessionDescription(body.sdp);
  await peer.setRemoteDescription(desc);
  const answer = await peer.createAnswer();
  await peer.setLocalDescription(answer);
  const payload = {
    sdp: peer.localDescription,
  };

  res.json(payload);
});


  


  In the handleTrackEvent function, I am getting the stream which I want to start record and save in the server's local storage.

  


  function handleTrackEvent(e, peer) {
  console.log(e.streams);
  senderStream = e.streams[0];
  var recorder = new MediaStreamRecorder(e.streams);
  recorder.recorderType = MediaRecorderWrapper;
  recorder.mimeType = "video/webm";
  recorder.ondataavailable = (blob) => {
    console.log(blob);
  };
  recorder.start(5 * 1000); <-- Error generator
}


  


  But when try to start the recording and get the blob in 5 sec intervals, it gives me "MediaRecorder Not Found" ...

  


  Passing following params over MediaRecorder API. { mimeType: 'video/webm' }
/Users/tecbackup/webrtc-peer/node_modules/msr/MediaStreamRecorder.js:672
            mediaRecorder = new MediaRecorder(mediaStream);
            ^

ReferenceError: MediaRecorder is not defined


  


  I am very new to webrtc, I need some suggestion to save the live stream from the browser to the server....In future, if find the blob, then I will save the blobs sequentially in a mp4 file in the server. Then, on runtime i start pressing ffmpeg in that mp4 file to get 240p, 360p, 720p ts files for hls streaming