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• Error with os.system in python script

  25 mai 2015, par Avery Ripoll Crocker

  I am creating a python script that will convert files using ffmpeg and unoconv. However when I run the program, rather than getting a converted file the program simply displays the text :

  sh: 1: unoconv -f: not found

  Here is the script for my program :

      path = raw_input("Please drag and drop the directory in which the file is stored into the terminal:")
  
      os.chdir(path[1:-2])
  
      filename = raw_input("Please enter the name of the file you would like to convert, including the file-type. e.g. test.txt, however please do make sure that the file-name does not have any spaces:")
  
      Fileextension = raw_input("What filetype would you like the program to convert your file to. E.g. .mp3: ")
  
      body, ext = os.path.splitext("filename")
  
      os.system("'ffmpeg -i ' + filename + body + Fileextension ")

  Any ideas as to why this happens ?

• How to add #EXT-X-PART:DURATION=0.200,URI="filePart271.0.mp4" into .m3u8 in ffmpeg ? [closed]

  11 août 2023, par palak

  So my question is : How do I add #EXT-X-PART:DURATION=0.200,URI="filePart271.0.mp4" to my HLS m3u8 playlist file using FFmpeg ?

  


  And the error i am receiving is Unrecognized option 'hls_part_flags'.
Error splitting the argument list : Option not found.

  


  as well as Unrecognized option 'hls_part_target'.
Error splitting the argument list : Option not found.

  


  Currently my FFmpeg command is the following :
ffmpeg -f lavfi -t 16 -i anullsrc -f lavfi -i testsrc=size=1280x720:rate=30 -c:v libx264 -c:a aac -t 16 -hls_time 4 -hls_playlist_type vod -hls_segment_type fmp4 -start_number 266 -hls_flags single_file -master_pl_name master.m3u8 -var_stream_map "v:0,a:0" -hls_segment_filename 'fileSequence%v.mp4' -hls_fmp4_init_filename 'city.mp4' -hls_base_url './' -hls_segment_filename 'filePart%v.%04d.mp4' -hls_part_flags '+independent' -hls_part_target 0.200 output.m3u8

  


  My expectation is that, How do I add #EXT-X-PART:DURATION=0.200,URI="filePart271.0.mp4" to my HLS m3u8 playlist file using FFmpeg ?

  


• Ffmpeg-Build : Error during build

  13 mars 2014, par talhamalik22

  I am building ffmpeg and stuck in an unusual spot. Inside libavutil we have float_dsp.h and float_dsp.c files. Inside these file there is a declaration of a methond which is :

  void (*butterflies_float)(float *av_restrict v1, float *av_restrict v2, int len);
  
  float (*scalarproduct_float)(const float *v1, const float *v2, int len);

  when building and compiling this file i get this error and have no idea what to do. I think problem is somewhere else but again have no idea at all. Error is

  jni/ffmpeg/libavcodec/../libavutil/float_dsp.h:150: error: expected ';', ',' or ')'  before 'v1'
  
  jni/ffmpeg/libavcodec/../libavutil/float_dsp.h:161: error: expected ';' before 'float'

  Anybody who wants to help please take a step forward because i have not really got any support on ffmpeg during couple of weeks now.

  Regards