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• lavfi : add ff_detect_color_primaries helper

  10 avril 2022, par Niklas Haas

  lavfi : add ff_detect_color_primaries helper
  Related to #9673, this helper exists to facilitate "guessing" the right
  
  primary tags from a given set of raw primary coefficients.
  The cutoff value of 0.001 was chosen by experimentation. The smallest
  
  "false positive" delta observed in practice was 0.023329, while the
  
  largest "false negative" delta was 0.00016. So, a value of 0.001 sits
  
  comfortably in the middle.
  Signed-off-by : Niklas Haas <git@haasn.dev>
  

  • [DH] libavfilter/colorspace.c
  • [DH] libavfilter/colorspace.h

• merge multiple videos to a single .mp4 files using fluent-ffmpeg

  4 juillet 2018, par Kumar Kisalay

  Version information

  fluent-ffmpeg version: 2.1.2
  
  ffmpeg version:4
  
  OS:linux mint

  Code to reproduce

  var fluent_ffmpeg = require("fluent-ffmpeg");
  
  
  
  var mergedVideo = fluent_ffmpeg();
  
  
  
  mergedVideo
  
    .mergeAdd('./Video1.mp4')
  
    .mergeAdd('./Video2.mp4')
  
    // .inputOptions(['-loglevel error','-hwaccel vdpau'])
  
    // .outputOptions('-c:v h264_nvenc')
  
    .on('error', function(err) {
  
        console.log('Error ' + err.message);
  
    })
  
    .on('end', function() {
  
        console.log('Finished!');
  
    })
  
    .mergeToFile('./mergedVideo8.mp4', '/tmp');

  When I run this code, then I get conversion failed error.

  Observed results

  Error ffmpeg exited with code 1: Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #3:0
  
  Conversion failed!

  I have tried the same conversion using the command line :

  ffmpeg -f concat -i textfile -c copy -fflags +genpts merged8.mp4

  Where textfile has the following content-

  file 'Video1.mp4'
  
  file 'Video2.mp4'

  And I was able to concatenate the video file. But I want to get the same result using fluent-ffmpeg.

• fluent-ffmpeg merging files not working - error reinitializing filters

  20 février 2021, par codingmaster398

  Version information

  


  

  • fluent-ffmpeg version : latest

  


  • ffmpeg version : latest, installed today

  


  • OS : windows 10

  


  


  Code to reproduce

  


  console.log("Starting to merge...")
a = new ffmpeg(files[0])
  files.forEach(file => {
    if(file !== files[0]){
      a.input(file)
    } 
  })

  a.on('error', function(err) {
      console.log('An error occurred: ' + err.message);
  })
  a.on('end', function() {
    console.log('Merging finished !');
  })
  a.mergeToFile(out);


  


  (note : if the problem only happens with some inputs, include a link to such an input file)
nah mate

  


  Expected results

  


  For the files in the "files" array to be put into out.avi

  


  Observed results

  


  Starting to merge...
An error occurred: ffmpeg exited with code 1: Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #7:0
Conversion failed!


  


  Note

  


  All of the files are different sizes and lengths.
They are all .avi because my kernel dies when i do mp4