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• Passing file name in youtube-dl post-process script without file extension suffix

  2 avril 2021, par Arete

  The documentation for youtube-dl says I can run a post-process command with the --exec option.

  


  Using Windows, here is an example I have tried :

  


  youtube-dl --exec "ffmpeg -i {} -ac 2 -c:a libfdk_aac -cutoff 20000 -afterburner 1 -vbr 0 {}.m4a" https://www.youtube.com/watch?v=sw9DlMNnpPM


  


  Note that {} passes the file name to the post-process command. For example filename.webm.

  


  The problem is that {} includes the file extension.

  


  How can I pass the file name to the post-process command without the file extension ?

  


  For example, if I were to convert the video, I would rather avoid getting an output name like filename.webm.m4a. Needless to say, I would rather want filename.m4a.

  


• FFMPEG read input from text file and filter complex from file at the same time

  28 août 2020, par Arindam Saha

  I am trying to send input media files from a text file instead of inline argument and filter complex from text file as well.

  


  Here is what I have done.

  


  


  1. I have created a text file and pushed all the input medias in te text file like,

     


     file 0.mp3
file 1.mp3
file 2.mp3
file 3.mp3
file 4.mp3
file 5.mp3
file 6.mp3
file 7.mp3
file 8.mp3
file 9.mp3

...


     


  


  2. I also have created another text file called filter.txt and inject all the complex filter rules in that.

     


     [0]adelay=0|0,volume=207[0a];[1]adelay=111400|111400,volume=206[1a];[2]adelay=116300|116300,volume=205[2a];[3]adelay=122300|122300,volume=204[3a];[4]adelay=125600|125600,volume=203[4a];[5]adelay=128000|128000,volume=202[5a];[6]adelay=137800|137800,volume=201[6a];[7]adelay=149100|149100,volume=200[7a];[8]adelay=150400|150400,volume=199[8a];[9]adelay=151900|151900,volume=198[9a];[10]adelay=153300|153300,volume=197[10a];[11]adelay=190300|190300,volume=196[11a];[12]adelay=210000|210000,volume=195[12a];[13]adelay=222500|222500,volume=194[13a];[14]adelay=224400|224400,volume=193[14a];[15]adelay=226900|226900,volume=192[15a];[16]adelay=228700|228700,volume=191[16a];[17]adelay=236100|236100,volume=190[17a];[18]adelay=240000|240000,volume=189[18a];[19]adelay=251200|251200,volume=188[19a];[20]adelay=253400|253400,volume=187[20a];[21]adelay=256500|256500,volume=186[21a];[22]adelay=258800|258800,volume=185[22a];[23]adelay=263700|263700,volume=184[23a];[24]adelay=267500|267500,volume=183[24a];[25]adelay=272000|272000,volume=182[25a];[26]adelay=273500|273500,volume=181[26a];[27]adelay=276600|276600,volume=180[27a];[28]adelay=27920 ....


     


  


  


  Both these 2 files as input individually works fine. However, if I try to pass both of them together the FFMPEG complains.

  


  ffmpeg -y -f concat -i tmp/input.txt -filter_complex_script tmp/filter.txt -map "[a]" tmp/out.mp3


  


  I get this error :

  


  Invalid file index 1 in filtergraph description 


  


  Any help is really appreciated.

  


• How to control output file name in a batch file ?

  24 décembre 2016, par vini_i

  I’m running a batch file to use FFMPEG to convert all the files with the *.MTS extension in a directory.

  for %%A in (*.MTS) do ffmpeg -i "%%A" -vcodec copy -acodec pcm_s16le -ar 48000 -ac 2 "newfiles\%%A.mov"
  
  pause

  The output files go to a directory called newfiles. The conversion takes place with no problem. The problem is that if the input is a file name.MTS the output is a file name.MTS.mov

  How can i change the batch file so that with an input of name.MTS the output is name.mov ?