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• file : Add an option for following a file that is being written

  5 février 2015, par Martin Storsjö

  file : Add an option for following a file that is being written
  Using this requires setting the rw_timeout option to make it
  
  terminate, alternatively using the interrupt callback (if used via
  
  the API).
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] doc/protocols.texi
  • [DBH] libavformat/file.c
  • [DBH] libavformat/version.h

• OSError : [Errno 13] Permission denied with FFMPEG

  14 février 2015, par jing yi

  I have just started using Python and am looking at using python to read mp3 files. I tried to use ffmpeg to read the mp3 file, however, i kept getting error of permission denied.

  Appreciate if you could advise me on how to resolve this error !

  Thank you !

  $ cd '/Users/jingyi/Downloads/' && '/usr/bin/pythonw'  '/Users/jingyi/Downloads/sound detection.py'  && echo Exit status: $? && exit 1
  
  Traceback (most recent call last):
  
    File "/Users/jingyi/Downloads/sound detection.py", line 14, in <module>
  
      pipe = sp.Popen(command, stdout = sp.PIPE)
  
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 709, in __init__
  
      errread, errwrite)
  
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1326, in _execute_child
  
      raise child_exception
  
  
  
  OSError: [Errno 13] Permission denied
  
  </module>

  ---

      FFMPEG_BIN = '/Users/jingyi/Downloads/ffmpeg'
  
      #INPUT_Sound = '/Users/jingyi/Downloads/Snore.mp3'
  
  
  
      import subprocess as sp
  
  
  
      command = [ FFMPEG_BIN,
  
              '-i', '/Users/jingyi/Downloads/Snore.mp3',
  
              '-f', 's16le',
  
              '-acodec', 'pcm_s16le',
  
              '-ar', '44100', # ouput will have 44100 Hz
  
              '-ac', '2', # stereo (set to '1' for mono)
  
              '-']
  
      pipe = sp.Popen(command, stdout = sp.PIPE)

• How to convert .srt file into ttml based xml subtitle file using ffmpeg ?

  25 août 2023, par geo-freak

  I have an .srt subtitle file. I want to convert it into .ttml format(or xml) using ffmpeg command. I tried using traditional way to convert this. But ffmpeg throwing an error. Is there any way to convert this in Linux platform ? Or any other command line applications do this conversion ?

  


  Below is the command I tried.

  


  ffmpeg -i my_srt.srt -y srt-to-xml.xml -v verbose

ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil      56. 31.100 / 56. 31.100
libavcodec     58. 54.100 / 58. 54.100
libavformat    58. 29.100 / 58. 29.100
libavdevice    58.  8.100 / 58.  8.100
libavfilter     7. 57.100 /  7. 57.100
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  5.100 /  5.  5.100
libswresample   3.  5.100 /  3.  5.100
libpostproc    55.  5.100 / 55.  5.100
Input #0, srt, from 'my_srt.srt':
Duration: N/A, bitrate: N/A
    Stream #0:0: Subtitle: subrip
Output #0, webm_dash_manifest, to 'srt-to-xml.xml':
Output file #0 does not contain any stream
[AVIOContext @ 0x5614924ef500] Statistics: 22267 bytes read, 0 seeks


  


  I even tried like below.

  


  ffmpeg -i my_srt.srt -y srt_to_ttml.ttml


  


  It didn't work too.