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• pipe:0 : could not find codec parameters

  10 avril 2018, par Harish

  I am trying to store streaming video as a segments of 15 min,it is working fine with gst-launch-1.0 my command is

  gst-launch-1.0 -e --gst-debug-level=2 v4l2src device=/dev/video0 ! vspmfilter outbuf-alloc=true ! \
  
  video/x-raw,width=640,height=480,framerate=15/2 ! omxh264enc target-bitrate=10485760 num-p-frames=0 ! \
  
  mpegtsmux name="muxer" ! fdsink fd=1 \
  
  alsasrc device=hw:0,0 latency-time=30000 buffer-time=800000 ! audioconvert ! audio/x-raw,format=S16LE,channel=2,rate=44100 ! \
  
  faac bitrate=128000 ! muxer. \
  
  | /usr/bin/ffmpeg -v info -i pipe:0 -map 0 -c copy -f segment \
  
  -reset_timestamps 1 -segment_atclocktime 1 -segment_time 900 \
  
  -segment_list_type csv -segment_list_size 0 \
  
  -segment_list /home/root/ContinuousCapture/CamFiles.txt
  
  -segment_list_entry_prefix /home/root/ContinuousCapture/ \
  
  -segment_format mpegts -strftime 1 /home/root/ContinuousCapture/video_%g%m%d_%H%M%S.mpegts

  I changed same command to gstd,my command is

  gstd-client pipeline_create p v4l2src device=/dev/video0 ! ${textoverlay} text=${dev0} ! ${clockoverlay} ! vspmfilter outbuf-alloc=true ! \
  
  video/x-raw,width=640,height=480,framerate=15/2 ! omxh264enc target-bitrate=10485760 num-p-frames=0 \
  
  mpegtsmux name="muxer" ! fdsink fd=1 \
  
  alsasrc device=hw:0,0 latency-time=30000 buffer-time=800000 ! audioconvert ! audio/x-raw,format=S16LE,channel=2,rate=44100 ! \
  
  faac bitrate=128000 ! muxer. \ 
  
  gstd-client pipeline_play p | /usr/bin/ffmpeg  -v info -i pipe:0 -map 0 -c copy -f segment \
  
  -reset_timestamps 1 -segment_atclocktime 1 -segment_time 900 \
  
  -segment_list_type csv -segment_list_size 0 \
  
  -segment_list /home/root/ContinuousCapture/CamFiles.txt -segment_list_entry_prefix /home/root/ContinuousCapture/ \
  
  -segment_format mpegts -strftime 1 /home/root/ContinuousCapture/video_%g%m%d_%H%M%S.mpegts

  its giving me the following error

  libdir=/usr/lib --shlibdir=/usr/lib --datadir=/usr/share/ffmpeg --disable-mipsdsp --disable-mipsdspr2 --cpu=generic --pkg-config=pkg-config --enable-avcodec --enable-avdevice --enable-avfilter --enable-avformat --disable-avresample --enable-bzlib --enable-gpl --disable-libgsm --disable-indev=jack --disable-libvorbis --disable-libmp3lame --disable-openssl --enable-postproc --disable-libschroedinger --disable-sdl2 --disable-libspeex --enable-swresample --enable-swscale --enable-libtheora --disable-vaapi --disable-vdpau --disable-libvpx --enable-libx264 --enable-outdev=xv
  
  libavutil      55. 58.100 / 55. 58.100
  
  libavcodec     57. 89.100 / 57. 89.100
  
  libavformat    57. 71.100 / 57. 71.100
  
  libavdevice    57.  6.100 / 57.  6.100
  
  libavfilter     6. 82.100 /  6. 82.100
  
  libswscale      4.  6.100 /  4.  6.100
  
  libswresample   2.  7.100 /  2.  7.100
  
  libpostproc    54.  5.100 / 54.  5.100
  
  [mpegts @ 0x49450] Format mpegts detected only with low score of 2, misdetection possible!
  
  [mpegts @ 0x49450] Could not detect TS packet size, defaulting to non-FEC/DVHS
  
  pipe:0: could not find codec parameters

  Thank you

• What is the proper input format for drawtext's timecode option in fluent-ffmpeg (node.js) ?

  24 janvier 2023, par Gil Dekel

  I am trying to generate short video clips from 3 images with a simple millisecond counter at the top left per user request. So far I was able to generate the clips using the videoshow npm lib, no issues here.

  



  However, when I try to add the timer via fluent-ffmpeg's drawtext filter to an already generated video, I run into the following issue.

  



  Here's what I have so far :

  



  ffmpeg('video.mp4')
    .on('error', function(err, stdout, stderr) {
      console.log("ffmpeg stdout:\n" + stdout);
      console.log("ffmpeg stderr:\n" + stderr);
    })
    .videoCodec('libx264')
    .format('mp4')
    .fps(fps)
    .complexFilter([
        {
            filter: 'drawtext',
            options: {
                fontsize: 15,
                timecode: '00\:00\:00\:00',  //<--- Issue is most likely here
                fontsize: 32,
                fontcolor: 'white',
                boxcolor: 'black',
                box: 1
            }
        }
    ]).save('out.mp4');


  



  From what I found online I am quite convinced that my problem is with the timecode input format. Here's my error log :

  



  ffmpeg stderr:
ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers
  built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --disable-jack --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma --enable-nonfree
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
  Duration: 00:00:01.03, start: 0.000000, bitrate: 585 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x1136 [SAR 923:924 DAR 130:231], 573 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
    Metadata:
      handler_name    : VideoHandler
[Parsed_drawtext_0 @ 0x7f91aa700700] Both text and text file provided. Please provide only one
[AVFilterGraph @ 0x7f91aa700440] Error initializing filter 'drawtext' with args 'fontsize=32:timecode=00:00:00:00:fontcolor=white:boxcolor=black:box=1'
Error initializing complex filters.
Invalid argument


  



  Specifically this :

  



  [Parsed_drawtext_0 @ 0x7f91aa700700] Both text and text file provided. Please provide only one


  



  When I run what should be the equivalent to my code in shell, it works perfectly :

  



  ffmpeg -i video.mp4 \
       -vf drawtext="fontsize=15:timecode='00\:00\:00\:00':rate=60:fontsize=32:fontcolor='white':\
           boxcolor=0x000000AA:box=1" \
       -f mp4 out.mp4


  



  I already spent a whole day trying to find any previous solutions to this problem, or documentation online regarding the proper format of drawtext's timecode option within node.js with no luck. It seems most of the information out there is for bash/shell use. I need to do this programmatically on a server per request, and I just can't find the right example to solve this.

  



  Any help to resolve this would be appreciated.

  


• Nodejs - ffmpeg - unable to live convert webcam to hls file

  26 mai 2020, par Jeff55

  Okay so long story short : I need to be able to accept a video stream from my usb port and offer this up to my frontend (React) using HLS/RTMP/WebRTC. I opted for HLS because it seems to have the least amount of dependencies and this may end up running on a Pi, so simplicity is good.

  



  const { spawn } = require('child_process');
var args = [
    '-pix_fmt', 'uyvy422',
    '-f', 'avfoundation',
    '-framerate', '30',
    '-i', '0',
    '-c:v', 'libx264',
    '-crf', '21',
    '-preset', 'veryfast',
    '-f', 'hls',
    '-hls_time', '4',
    '-hls_playlist_type', 'event', 'stream.m3u8'
]
const ffmpeg = spawn('ffmpeg', args);

ffmpeg.stdout.on('data', (data) => {
  console.log(`stdout: ${data}`);
});

ffmpeg.stderr.on('data', (data) => {
    console.error(`stderr: ${data}`);
});

ffmpeg.on('close', (code, signal) => {
  if(code) console.log(`child process exited with code ${code}`);
  else if(signal) console.log(`child process exited with signal ${signal}`);
});


  



  My expectation is that this should grab the 0th video input and encode to hls. Unfortunately, I get this as a result.

  



  stderr: ffmpeg version 4.2.3
stderr:  Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.3 (clang-1103.0.32.59)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.3 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags=-fno-stack-check --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  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
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100

stderr: [AVFoundation input device @ 0x7fcac2604600] Configuration of video device failed, falling back to default.

child process exited with signal SIGABRT


  



  I have no clue why I'm getting a SIGABRT signal but when I manually type in the device (-i "FaceTime HD Camera"), I don't get the config error but the process exits without doing its usual frame=   38 fps=0.0 q=27.0 size=N/A time=00:00:00.46 bitrate=N/A speed=0.869x, it just exits with a SIGABRT.

  



  If I type the exact command (ffmpeg -f avfoundation -framerate 30 -i "0" -c:v libx264 -crf 21 -preset veryfast -f hls -hls_time 4 -hls_playlist_type event out/test.m3u8), everything works as expected and I get an output.

  



  I read here that it could be due to a static build but I'm not really sure why that would cause an issue. For reference, this is on MacOS and will most likely eventually move to Ubuntu.

  



  And idea why this is happening ? Thanks.