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• ffmpeg fails to convert several ts files into one mp3

  17 janvier, par Nadia Ghebreial

  I'm joining several .ts files into one .mp3 file like this :

  


  import ffmpeg from 'fluent-ffmpeg'

const tsDest = 'dir/file.ts'
const mp3Dest = 'dir/file.mp3'

const ff = ffmpeg(urls[0])
urls.slice(1).map(url => ff.input(url))

ff.on('error', function (err) {
  logger.error('An error occurred: ' + err.message)
  reject(err)
})
.on('end', function () {
  return ffmpeg(tsDest)
    .videoCodec('libx264')
    .audioCodec('libmp3lame')
    .on('error', function (err) {
      logger.error('An error occurred: ', err)
      reject(err)
    })
    .on('end', function () {
      resolve(mp3Dest)
    })
    .save(mp3Dest)
}).mergeToFile(tsDest, dir)


  


  In the first part I receive this error :

  


  An error occurred: ffmpeg exited with code 228: size=     259KiB time=00:00:04.95 bitrate= 428.6kbits/s speed=58.1x    
Conversion failed!


  


  I have no clue why this happens and how to fix it. I can't find a pattern that I can follow to know why this happens and how, it just happens sometimes and some other times it doesn't. I've tried to find a solution but I couldn't find anything or any bug similar to mine.

  


  I've put this question in the library (https://github.com/damianociarla/node-ffmpeg/issues/101) too let's see if I can get some useful info from somewhere.

  


  Thanks in advance !

  


• JavaCV - strange black screen when playing a file with FFmpegFrameGrabber

  17 mai 2012, par noncom

  I am using JavaCV and it's FFmpegFrameGrabber in my project. It loads and player files OK, when I launch the project from Eclipse, but shows either a black screen or a still 1st frame when I run a compiled project. Sometimes comming with this error :

  Input #0, avi, from 'C:/path/Start_Cut.avi':
  
  Duration: 00:00:20.03, start: 0.000000, bitrate: 26002 kb/s
  
  Stream #0.0: Video: mpeg4, yuv420p, 1920x1080, 30 tbr, 30 tbn, 30 tbc
  
  Cannot allocate memory. com.googlecode.javacv.FrameGrabber$Exception: Cannot initialize the conversion c ontext.
  
              at com.googlecode.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.jav a:280)

  and sometimes with

  [mpeg4 @ 6A95DF20] Invalid and inefficient vfw-avi packed B frames detected
  
  Input #0, avi, from 'C:/path/Start_Cut.avi':
  
    Duration: 00:00:20.03, start: 0.000000, bitrate: 26002 kb/s
  
      Stream #0.0: Video: mpeg4, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 25 tbr, 30
  
   tbn, 25 tbc

  does anyone has a clue on this ?

  UPDATE :

  I have been able to narrow down the problem. For some reason, FFmpegFrameGrabber returns null upn calling the grab() method. Why does it work in Eclipse and does not work in standalone build ? All libraries are included and I suppose, it would come up with an error if they did not.

• Windows server crashs in video transcode during

  6 février 2019, par parsa

  I’m using ffmpeg for transcoding of my videos on a HP Blade dedicated server with these details :

  OS : Windows Server 2012 R2 64Bit
  CPU : Intel XEON X5650
  RAM : 16GB
  Hard disk : A sas normal disk

  This command is a sample for creating qualities which has 4K as top level and
  I use this command for creating lower qualities from that as parallel at the same time.

  ffmpeg -i input.mp4 -filter_complex 
  
  [0:v]split=4[s0][s1][s2][s3];
  
  [s0]scale=uhd2160[v0];
  
  [s1]scale=hd1080[v1];
  
  [s2]scale=hd720[v2];
  
  [s3]scale=hd480[v3];
  
  [s4]scale=nhd[v4];
  
  [s5]scale=cga[v5]
  
  -map [v0] -map [v1] -map [v2] -map [v3] -map [v4] -map [v5] -map 0:a 
  
  -c:v libx264 -c:a aac -f tee -g 48 -threads 0 
  
  "[select='v\:0,a':f=hls:hls_list_size=0:hls_time=6]../video/2160p/out.m3u8| 
  
   [select='v\:1,a':f=hls:hls_list_size=0:hls_time=6]../video/1080p/out.m3u8| 
  
   [select='v\:2,a':f=hls:hls_list_size=0:hls_time=6]../video/720p/out.m3u8| 
  
   [select='v\:3,a':f=hls:hls_list_size=0]../video/480p/out.m3u8| 
  
   [select='v\:3,a':f=hls:hls_list_size=0:hls_time=6]video/360p/out.m3u8| 
  
   [select='v\:3,a':f=hls:hls_list_size=0:hls_time=6]video/200p/out.m3u8"

  Some times in transcoding time windows goes to reconnecting and count up to 20 and then goes to black screen.
  I cannot find anythings in windows logs.
  And finally I restart server from button of that server.
  What’s hapenning ?
  How can I find a clue, about this issue ?
  Any one know anything about this issue ?