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• FFMPEG windows 10, how to find multimedia file duration command

  7 mars 2018, par labana

  D:/Projects/wamp/bin/ffmpeg.exe -y -i D:/Projects/ffmpeg/test.mp4 -f -t

  This is my command to find mp4 file time duration but giving error in coomand line is "At least one output file must be specified"

• Creating m3u8 file that points to other m3u8 files

  11 janvier 2018, par amcneil

  I’m looking to create a m3u8 file that points to other m3u8 files based on bandwidth, something like this

  #EXTM3U
  
  #EXT-X-VERSION:4
  
  #EXT-X-TARGETDURATION:7
  
  #EXT-X-MEDIA-SEQUENCE:4
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=500000,RESOLUTION=480x270
  
  480x270.m3u8
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1000000,RESOLUTION=640x360
  
  640x360.m3u8
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2000000,RESOLUTION=1280x720
  
  1280x720.m3u8
  
  #EXT-X-ENDLIST

  I was hoping to be able to do this using ffmpeg but I can’t seem to find any information on doing it that way. This may be the wrong way to do it so if anyone can point me in the right direction that would be greatly appreciated.

• ffmpeg can't find output directory under cygwin

  22 octobre 2015, par ljwobker

  I’m using the windows build of ffmpeg (details below), and when I try to transcode a video with the output file NOT in the local directory, it complains with the error message :

  /dtop/out.mp4: No such file or directory

  My cygwin mounts are as follows - I have not found any other application which doesn’t follow the mounts/links correctly...

  [lwobker:/dtop/vertigo]$ mount
  
  C:/Documents and Settings/lwobker/Desktop on /dtop type ntfs (binary)
  
  C:/cygwin/bin on /usr/bin type ntfs (binary,auto)
  
  C:/cygwin/lib on /usr/lib type ntfs (binary,auto)
  
  C:/cygwin on / type ntfs (binary,auto)
  
  C: on /cygdrive/c type ntfs (binary,posix=0,user,noumount,auto)

  Here’s what I’ve managed to figure out so far, leading me to believe that for some reason FFMPEG does not like following mount points or links in cygwin. But I’ll be damned if I can figure out why...

  if I do this, it WORKS :
  ffmpeg -i ./input.mp4 ./out.mp4

  if I do this, it WORKS (permission and mount/link check) :
  touch /dtop/out.mp4

  however, if I give a file location that is not in the current working directory or a subdirectory of the current working directory, it pukes :

  [lwobker:/dtop/vertigo]$ ffmpeg -i 00001.MTS /dtop/out.mp4
  
  ffmpeg version N-64919-ga613257 Copyright (c) 2000-2014 the FFmpeg developers
  
  <snip>
  
  Input #0, mpegts, from '00001.MTS':
  
    Duration: 00:01:41.63, start: 1.033367, bitrate: 10221 kb/s
  
    Program 1
  
      Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
  
      Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s
  
      Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080
  
  /dtop/out.mp4: No such file or directory
  
  </snip>

  it also pukes if I give it /cygdrive/c/somefile.mp4 as an argument - it won’t find that either.

  Any ideas would be really appreciated. I had this working with a version of FFMPEG that I had compiled from source locally within cygwin, but when I moved machines I could not get it to recompile correctly so I’m hoping to figure this out so I can use the pre-compiled binaries for convenience...

  FFMPEG version details :

  [lwobker:/dtop/vertigo]$ ffmpeg
  
  ffmpeg version N-64919-ga613257 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jul 23 2014 00:35:22 with gcc 4.8.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
  
    libavutil      52. 92.101 / 52. 92.101
  
    libavcodec     55. 69.100 / 55. 69.100
  
    libavformat    55. 48.101 / 55. 48.101
  
    libavdevice    55. 13.102 / 55. 13.102
  
    libavfilter     4. 11.102 /  4. 11.102
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
  
  
  
  Use -h to get full help or, even better, run 'man ffmpeg'