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• Node-Fluent-ffmpeg stops with Error initializing complex filters. Invalid argument

  28 août 2020, par V.Panichkin

  I use node-fluent-ffmpeg to generate ffmpeg command. I created a node.js app, but it throws an exception :

  


  Error: ffmpeg exited with code 1: Error initializing complex filters.&#xA;Invalid argument&#xA;&#xA;    at ChildProcess.<anonymous> (/home/victor/Documents/work/recorder_ws/node_modules/fluent-ffmpeg/lib/processor.js:182:22)&#xA;    at ChildProcess.emit (events.js:315:20)&#xA;    at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)&#xA;</anonymous>

  


  The command that was generated by Node-Fluent-Ffmpeg is

  


  ffmpeg -i /home/user/videos/1.webm -i /home/user/videos/3.webm -i /home/user/videos/4.webm -i /home/user/videos/5.webm -y -filter_complex "[0:v] scale=qvga [a0];[1:v] scale=qvga [a1];[2:v] scale=qvga [a2];[3:v] scale=qvga [a3];[a0][a1][a2][a3]xstack=inputs=4:layout=0_0|w0_0|0_h0|w0_h0[out]" -map "[out]" -c:v libx264 -t '30'  ./server-generated.mkv


  


  I checked it several times and didn't find any problem. Afterwards, I run this generated command directly in the console and it works fine.

  


  Could someone tell me why node-fluent-ffmpeg cannot run this command with a valid ffmpeg command and throws invalid argument exception ?

  


• FFMPEG : high quality animated gif ?

  5 mai 2017, par David Hope

  I’m generating animated gif from a video on my server.

  The generated animated gif is not really high quality and it looks like the pixels are huge.

  Example :

  

  This is how I generate the gif :

  shell_exec("/usr/bin/ffmpeg -i video.mkv -vf scale=500:-1 -t 10 -r 10 image.gif");

  I did a search on google and came across this code :

  shell_exec("/usr/bin/ffmpeg -i video.mkv -r 20 -f image2pipe -vcodec ppm - | convert -delay 5 - output.gif");

  But the code above doesn’t do anything and no output.gif is being generated at all.

  Could someone please let me know if there is a clear way to generate a high quality gif using ffmpeg ?

  There are some tutorials that I came across but none of them worked for me and some of them involves using imagemagic which i dont have access to.

• How can I include all ts files ffmpeg generates in the m3u8 playlist ?

  14 février 2015, par Pobre

  I have the latest ffmpeg version 2.5 and I am trying to convert a mp4 file into HLS files. From what I understand ffmpeg can generate ts and m3u8 playlist. When ffmpeg finishes, the playlist just contains last few ts files generated. It appears it’s being overwritten. What parameters must I pass to ffmpeg to generate a complete m3u8 list of all the ts files ?

  final m3u8 generated :

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:9
  
  #EXT-X-MEDIA-SEQUENCE:50
  
  #EXTINF:9.000000,
  
  480x27050.ts
  
  #EXTINF:9.000000,
  
  480x27051.ts
  
  #EXTINF:9.000000,
  
  480x27052.ts
  
  #EXTINF:9.000000,
  
  480x27053.ts
  
  #EXTINF:0.466667,
  
  480x27054.ts
  
  #EXT-X-ENDLIST

  ffmpeg arguments :

  ffmpeg -i test_2.mp4 -c:a aac -strict experimental -ac 2 -ar 48k -ab 64k -c:v libx264 -s 480x270 -aspect 16:9 -b:v 400k -r 15 -g 45 -profile:v baseline -level 3.0 -f hls -hls_time 9 480x270.m3u8