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• MP4 file starts from a non-key frame [closed]

  1er octobre 2023, par userDtrm

  I have used the following ffprobe command to analyse a .mp4 file.

  


  


  ffprobe -i <input /> -show_frames - select_streams v:0 -print_format flat &amp;> save_to_file.text

  


  


  It produces the following output.

  


  

    ffprobe version 5.1.3 Copyright (c) 2007-2022 the FFmpeg developers
      built with gcc 13 (GCC)
      configuration : —prefix=/home/thanuja/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/home/thanuja/ffmpeg_build/include —extra-ldflags=-L/home/thanuja/ffmpeg_build/lib —extra-libs=-lpthread —extra-libs=-lm —bindir=/home/thanuja/bin —enable-gpl —enable-libfdk_aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree —enable-openssl —enable-demuxer=spdif —enable-decoder=dolby_e —enable-decoder=ac3 —enable-decoder=eac3 —enable-indev=alsa —enable-outdev=alsa —enable-shared
      libavutil      57. 28.100 / 57. 28.100
      libavcodec     59. 37.100 / 59. 37.100
      libavformat    59. 27.100 / 59. 27.100
      libavdevice    59.  7.100 / 59.  7.100
      libavfilter     8. 44.100 /  8. 44.100
      libswscale      6.  7.100 /  6.  7.100
      libswresample   4.  7.100 /  4.  7.100
      libpostproc    56.  6.100 / 56.  6.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'FTV267StoS.mp4' :
      Metadata :
        major_brand : mp42
        minor_version : 1
        compatible_brands : isommp41mp42
        creation_time : 2023-04-02T23:52:12.000000Z
      Duration : 00:04:47.84, start : 0.000000, bitrate : 7374 kb/s
      Stream #0:0[0x1](und) : Video : h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709/unknown/bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 7198 kb/s, 59.94 fps, 59.94 tbr, 90k tbn (default)
        Metadata :
          creation_time : 2023-04-02T23:52:12.000000Z
          handler_name : Core Media Video
          vendor_id : [0][0][0][0]
      Stream #0:1[0x2](eng) : Audio : aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
        Metadata :
          creation_time : 2023-04-02T23:52:12.000000Z
          handler_name : Core Media Audio
          vendor_id : [0][0][0][0]
    frames.frame.0.media_type="video"
    frames.frame.0.stream_index=0
    frames.frame.0.key_frame=0
    frames.frame.0.pts=34536
    frames.frame.0.pts_time="0.383733"
    frames.frame.0.pkt_dts=34536
    frames.frame.0.pkt_dts_time="0.383733"
    frames.frame.0.best_effort_timestamp=34536
    frames.frame.0.best_effort_timestamp_time="0.383733"
    frames.frame.0.pkt_duration=1501
    frames.frame.0.pkt_duration_time="0.016678"
    frames.frame.0.pkt_pos="1834827"
    frames.frame.0.pkt_size="14917"
    frames.frame.0.width=1920
    frames.frame.0.height=1080
    frames.frame.0.pix_fmt="yuv420p"
    frames.frame.0.sample_aspect_ratio="1:1"
    frames.frame.0.pict_type="P"
    frames.frame.0.coded_picture_number=120
    frames.frame.0.display_picture_number=0
    frames.frame.0.interlaced_frame=0
    frames.frame.0.top_field_first=0
    frames.frame.0.repeat_pict=0
    frames.frame.0.color_range="tv"
    frames.frame.0.color_space="bt709"
    frames.frame.0.color_primaries="unknown"
    frames.frame.0.color_transfer="bt709"
    frames.frame.0.chroma_location="left"
    frames.frame.0.tags.timecode="20:18:26:50"
    frames.frame.0.side_data_list.side_data.0.side_data_type="H.26[45] User Data Unregistered SEI message"
    frames.frame.0.side_data_list.side_data.1.side_data_type="H.26[45] User Data Unregistered SEI message"
    frames.frame.0.side_data_list.side_data.2.side_data_type="SMPTE 12-1 timecode"
    frames.frame.0.side_data_list.side_data.2.timecodes.timecode.0.value="20:18:26:50"
    frames.frame.1.media_type="video"
    frames.frame.1.stream_index=0
    frames.frame.1.key_frame=0
    frames.frame.1.pts=36036
    frames.frame.1.pts_time="0.400400"
    frames.frame.1.pkt_dts=36036
    frames.frame.1.pkt_dts_time="0.400400"
    frames.frame.1.best_effort_timestamp=36036
    frames.frame.1.best_effort_timestamp_time="0.400400"
    frames.frame.1.pkt_duration=1501
    frames.frame.1.pkt_duration_time="0.016678"
    frames.frame.1.pkt_pos="1857434"
    frames.frame.1.pkt_size="14472"
    frames.frame.1.width=1920
    frames.frame.1.height=1080
    frames.frame.1.pix_fmt="yuv420p"
    frames.frame.1.sample_aspect_ratio="1:1"
    frames.frame.1.pict_type="P"



  


  As seen in this output, the 1st frame appears to be a P frame. I'm curious as to how will the decoder decode this frame without a preceding I frame (key frame) ? The P frame will not have enough information to reconstruct the image from its residual data without the key frame.

  


• What would be the correct way to use Exec or Transcode ffmpeg in SRS version of Windows 5.0.128

  29 janvier 2023, par diegosn79

  i was doing tests in different ways, and i can't use the Exec or Transcode option, i highlight that I have copied the ffmpeg.exe in the objs folder.
These are the codes I tried, and I attach the log errors.

  


  exec {

enabled on;

publish ./objs/ffmpeg.exe -rtbufsize 10M -i rtmp://10.1.9.240/live/encoder  -vf scale=1080:720 -c:v libx264 -profile:v high -level 4.2 -preset fast -b:v 1500k -c:a aac -ac 2 -b:a 96k -f flv -y rtmp://10.1.9.240:1935/live/encoderlow/;

}


  


  LOGS

  


  [2023-01-04 10:05:46.410][WARN][1309][01568ctu][11] EXEC : Ignore error, code=3028(FFmpegFork)(Failed to fork FFmpeg trancoder process) :
process start : vfork process failed, cli=./objs/ffmpeg.exe -rtbufsize 10M -i rtmp ://10.1.9.240/live/encoder -vf scale=1080:720 -c:v libx264 -profile:v high -level 4.2 -preset fast -b:v 1500k -c:a aac -ac 2 -b:a 96k -f flv -y rtmp ://10.1.9.240:1935/live/encoderlow/
thread [1309][01568ctu] : do_cycle() [./src/app/srs_app_ng_exec.cpp:108][errno=11]
thread [1309][01568ctu] : start() [./src/app/srs_app_process.cpp:197][errno=11]

  


  transcode

  


      enabled     on;

    ffmpeg      ./objs/ffmpeg.exe;

    engine ff {

        enabled         on;

        vfilter {

        }

        vcodec          libx264;

        vthreads        4;

        vprofile        high;

        vpreset         fast;

        vbitrate        1500k;

        vparams {

        }

        acodec          libfdk_aac;

        aparams {

        }

        output          rtmp://127.0.0.1:[port]/[app]/[stream]_[engine]?vhost=[vhost];

    }

}


  


  LOGS

  


  [2023-01-04 11:04:45.295][WARN][1489][34r32764][11] Encoder : Ignore error, code=3028(FFmpegFork)(Failed to fork FFmpeg trancoder process) : ffmpeg start : vfork process failed, cli=./objs/ffmpeg.exe -f flv -i rtmp ://127.0.0.1:1935/live ?vhost=defaultVhost/encoder -vcodec libx264 -b:v 1500000 -threads 4 -profile:v high -preset fast -acodec libfdk_aac -f flv -y rtmp ://127.0.0.1:1935/live/encoder_ff ?vhost=defaultVhost 1 > ./objs/ffmpeg-encoder-defaultVhost-live-encoder-ff.log 2 > ./objs/ffmpeg-encoder-defaultVhost-live-encoder-ff.log
thread [1489][34r32764] : do_cycle() [./src/app/srs_app_encoder.cpp:117][errno=11]
thread [1489][34r32764] : start() [./src/app/srs_app_process.cpp:197][errno=11]

  


• Code can not read property 1 of undefined [closed]

  25 mai 2023, par Jesse Copas

  I'm a very new programmer and am working on a Tdarr plugin in JS.
Everything works fine until a 4k file tries to get transcoded and it fails with this log

  


  2023-05-24T19:09:54.906Z ZoBKWMMKG:Node\[hidden-hog\]:Worker\[tall-tuna\]:{"pluginInputs":{"BitRate":"4000","ResolutionSelection":"1080p","Container":"mkv","AudioType":"AAC","FrameRate":"24"}}

2023-05-24T19:09:54.907Z ZoBKWMMKG:Node\[hidden-hog\]:Worker\[tall-tuna\]:Error TypeError: Cannot read property '1' of undefined


  


  It's saying that it's unable to read property 1 of undefined and I'm looked and looked and looked and can't find what it is referring to. Hoping to get another set of eyes on it
The plugin Code is here

  


  /* eslint no-plusplus: ["error", { "allowForLoopAfterthoughts": true }] */
/* eslint-disable no-restricted-globals */
const details = () => ({
  id: 'Tdarr_Plugin_Jeso_AV1_HandBrake_Transcode',
  Stage: 'Pre-processing',
  Name: 'AV1 HandBrake Transcoder',
  Type: 'Video',
  Operation: 'Transcode',
  Description: 'Transcodes to AV1 at the selected Bitrate. This is best used with Remux Files.',
  Version: '2.1.3',
  Tags: 'HandBrake,configurable',
  Inputs: [
    {
      name: 'BitRate',
      type: 'string',
      defaultValue: '4000',
      inputUI: {
        type: 'text',
      },
      tooltip: `
        ~ Requested Bitrate ~ \\n
        Put in the Bitrate you want to process to in Kbps. For example 4000Kbps is 4Mbps. `,
    },
    {
      name: 'ResolutionSelection',
      type: 'string',
      defaultValue: '1080p',
      inputUI: {
        type: 'dropdown',
        options: [
          '8KUHD',
          '4KUHD',
          '1080p',
          '720p',
          '480p',
        ],
      },
      // eslint-disable-next-line max-len
      tooltip: 'Any Resolution larger than this will become this Resolution same as the bitrate if the Res is lower than the selected it will use the res of the file as to not cause bloating of file size.',
    },
    {
      name: 'Container',
      type: 'string',
      defaultValue: 'mkv',
      inputUI: {
        type: 'dropdown',
        options: [
          'mp4',
          'mkv',
        ],
      },
      tooltip: ` Container Type \\n\\n
          mkv or mp4.\\n`,
    },
    {
      name: 'AudioType',
      type: 'string',
      defaultValue: 'AAC',
      inputUI: {
        type: 'dropdown',
        options: [
          'AAC',
          'EAC3',
          'MP3',
          'Vorbis',
          'Flac16',
          'Flac24',
        ],
      },
      // eslint-disable-next-line max-len
      tooltip: 'Set Audio container type that you want to use',
    },
    {
      name: 'FrameRate',
      type: 'string',
      defaultValue: '24',
      inputUI: {
        type: 'text',
      },
      // eslint-disable-next-line max-len
      tooltip: 'If the files framerate is higher than 24 and you want to maintain that framerate you can do so here',
    },
  ],
});
const MediaInfo = {
  videoHeight: '',
  videoWidth: '',
  videoFPS: '',
  videoBR: '',
  videoBitDepth: '',
  overallBR: '',
  videoResolution: '',
}; // var MediaInfo
// Easier for our functions if response has global scope.
const response = {
  processFile: false,
  preset: '',
  container: '.mkv',
  handBrakeMode: true,
  FFmpegMode: false,
  reQueueAfter: true,
  infoLog: '',
}; // var response
// Finds the first video stream and populates some useful variables
function getMediaInfo(file) {
  let videoIdx = -1;
  for (let i = 0; i < file.ffProbeData.streams.length; i += 1) {
    const strstreamType = file.ffProbeData.streams[i].codec_type.toLowerCase();
    // Looking For Video
    // Check if stream is a video.
    if (videoIdx === -1 && strstreamType === 'video') {
      videoIdx = i;
      // get video streams resolution
      MediaInfo.videoResolution = `${file.ffProbeData.streams[i].height}x${file.ffProbeData.streams[i].width}`;
      MediaInfo.videoHeight = Number(file.ffProbeData.streams[i].height);
      MediaInfo.videoWidth = Number(file.ffProbeData.streams[i].width);
      MediaInfo.videoFPS = Number(file.mediaInfo.track[i + 1].FrameRate) || 25;
      // calulate bitrate from dimensions and fps of file
      MediaInfo.videoBR = (MediaInfo.videoHeight * MediaInfo.videoWidth * MediaInfo.videoFPS * 0.08).toFixed(0);
    }
  }
} // end  getMediaInfo()
// define resolution order from ResolutionSelection from biggest to smallest
const resolutionOrder = ['8KUHD', '4KUHD', '1080p', '720p', '480p'];
// define the width and height of each resolution from the resolution order
const resolutionsdimensions = {
  '8KUHD': '--width 7680 --height 4320',
  '4KUHD': '--width 3840 --height 2160',
  '1080p': '--width 1920 --height 1080',
  '720p': '--width 1280 --height 720',
  '480p': '--width 640 --height 480',
};
// eslint-disable-next-line no-unused-vars
const plugin = (file, librarySettings, inputs) => {
  // eslint-disable-next-line no-unused-vars
  const importFresh = require('import-fresh');
  // eslint-disable-next-line no-unused-vars
  const library = importFresh('../methods/library.js');
  // eslint-disable-next-line no-unused-vars
  const lib = require('../methods/lib')();
  // Get the selected resolution from the 'ResolutionSelection' variable
  const selectedResolution = inputs.ResolutionSelection;
  getMediaInfo(file);
  // use mediainfo to match height and width to a resolution on resolutiondimensions
  let dimensions = resolutionsdimensions[selectedResolution];
  // if the file is smaller than the selected resolution then use the file resolution
  if (MediaInfo.videoHeight < dimensions.split(' ')[3] || MediaInfo.videoWidth < dimensions.split(' ')[1]) {
    dimensions = `--width ${MediaInfo.videoWidth} --height ${MediaInfo.videoHeight}`;
    // eslint-disable-next-line brace-style
  }
  // read the bitrate of the video stream
  let videoBitRate = MediaInfo.videoBR;
  // if videoBitrate is over 1000000 devide by 100 to get the bitrate in Kbps
  if (videoBitRate > 1000000) {
    videoBitRate /= 100;
  } else { videoBitRate /= 1000; }
  // if VideoBitrate is smaller than selected bitrate then use the videoBitrate
  if (videoBitRate < inputs.BitRate) {
    // eslint-disable-next-line no-param-reassign
    inputs.BitRate = videoBitRate;
    // eslint-disable-next-line brace-style
  }
  // if VideoBitrate is larger than selected bitrate then use the selected bitrate
  else {
    // eslint-disable-next-line no-self-assign, no-param-reassign
    inputs.BitRate = inputs.BitRate;
  }

  //Skip Transcoding if File is already AV1
  if (file.ffProbeData.streams[0].codec_name === 'av1') {
    response.processFile = false;
    response.infoLog += 'File is already AV1 \n';
    return response;
  }
  // eslint-disable-next-line no-constant-condition
  if ((true) || file.forceProcessing === true) {
    // eslint-disable-next-line max-len
    response.preset = `--encoder svt_av1 -b ${inputs.BitRate} -r ${inputs.FrameRate} -E ${inputs.AudioType} -f ${inputs.Container} --no-optimize ${dimensions} --crop 0:0:0:0`;
    response.container = `.${inputs.Container}`;
    response.handbrakeMode = true;
    response.ffmpegMode = false;
    response.processFile = true;
    response.infoLog += `File is being transcoded at ${inputs.BitRate} Kbps to ${dimensions} as ${inputs.Container} \n`;
    return response;
  }
  response.infoLog += 'File is being transcoded using custom arguments \n';
  return response;
};
  };

module.exports.details = details;
module.exports.plugin = plugin;


  


  Tried transcoding 4k files down to 1080p but it fails due to that undefined error. All Res 1080p and lower that I have tried work correctly

  


  EDIT : I used Console.log and got this back

  


  [2023-05-24T23:29:51.001] [ERROR] Tdarr_Server - Error running MediaInfo 1&#xA;[2023-05-24T23:29:51.004] [ERROR] Tdarr_Server - RangeError: Maximum call stack size exceeded&#xA;    at x (<anonymous>:wasm-function[381]:0x15c4d)&#xA;    at <anonymous>:wasm-function[46]:0x5dc0&#xA;    at <anonymous>:wasm-function[652]:0x21cb9&#xA;    at <anonymous>:wasm-function[1023]:0x47018&#xA;    at <anonymous>:wasm-function[853]:0x37827&#xA;    at <anonymous>:wasm-function[3684]:0xf4884&#xA;    at <anonymous>:wasm-function[3516]:0xeb5b7&#xA;    at <anonymous>:wasm-function[1061]:0x487c9&#xA;    at <anonymous>:wasm-function[795]:0x3006d&#xA;    at <anonymous>:wasm-function[3628]:0xf01cc&#xA;[2023-05-24T23:29:51.006] [ERROR] Tdarr_Server - Error running MediaInfo 2&#xA;[2023-05-24T23:29:51.006] [ERROR] Tdarr_Server - RangeError: Maximum call stack size exceeded&#xA;    at x (<anonymous>:wasm-function[381]:0x15c4d)&#xA;    at <anonymous>:wasm-function[46]:0x5dc0&#xA;    at <anonymous>:wasm-function[652]:0x21cb9&#xA;    at <anonymous>:wasm-function[1023]:0x47018&#xA;    at <anonymous>:wasm-function[853]:0x37827&#xA;    at <anonymous>:wasm-function[3684]:0xf4884&#xA;    at <anonymous>:wasm-function[3516]:0xeb5b7&#xA;    at <anonymous>:wasm-function[1061]:0x487c9&#xA;    at <anonymous>:wasm-function[795]:0x3006d&#xA;    at <anonymous>:wasm-function[3628]:0xf01cc&#xA;[2023-05-24T23:29:58.220] [ERROR] Tdarr_Server - Error running MediaInfo 1&#xA;[2023-05-24T23:29:58.223] [ERROR] Tdarr_Server - RangeError: Maximum call stack size exceeded&#xA;    at x (<anonymous>:wasm-function[381]:0x15c4d)&#xA;    at <anonymous>:wasm-function[46]:0x5dc0&#xA;    at <anonymous>:wasm-function[652]:0x21cb9&#xA;    at <anonymous>:wasm-function[1023]:0x47018&#xA;    at <anonymous>:wasm-function[853]:0x37827&#xA;    at <anonymous>:wasm-function[3684]:0xf4884&#xA;    at <anonymous>:wasm-function[3516]:0xeb5b7&#xA;    at <anonymous>:wasm-function[1061]:0x487c9&#xA;    at <anonymous>:wasm-function[795]:0x3006d&#xA;    at <anonymous>:wasm-function[3628]:0xf01cc&#xA;[2023-05-24T23:29:58.224] [ERROR] Tdarr_Server - Error running MediaInfo 2&#xA;[2023-05-24T23:29:58.224] [ERROR] Tdarr_Server - RangeError: Maximum call stack size exceeded&#xA;    at x (<anonymous>:wasm-function[381]:0x15c4d)&#xA;    at <anonymous>:wasm-function[46]:0x5dc0&#xA;    at <anonymous>:wasm-function[652]:0x21cb9&#xA;    at <anonymous>:wasm-function[1023]:0x47018&#xA;    at <anonymous>:wasm-function[853]:0x37827&#xA;    at <anonymous>:wasm-function[3684]:0xf4884&#xA;    at <anonymous>:wasm-function[3516]:0xeb5b7&#xA;    at <anonymous>:wasm-function[1061]:0x487c9&#xA;    at <anonymous>:wasm-function[795]:0x3006d&#xA;    at <anonymous>:wasm-function[3628]:0xf01cc&#xA;</anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous></anonymous>