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• hlsenc : add use_localtime_mkdir option to automatically create time-based directory

  3 février 2016, par Johan Ström

  hlsenc : add use_localtime_mkdir option to automatically create time-based directory
  Use with -use_localtime, and set -hls_segment_filename to a path which
  
  contains a subdirectory i.e. /some/path/%Y%m%d/%Y%m%dT%H%M%S-%s.ts
  
  This will mkdir the %Y%m%d-part of the path if it does not already
  
  exist.
  
  In addition, each filename in the playlist output will be prefixed with
  
  this subdirectory (if playlist and segment shares the same base path).
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] doc/muxers.texi
  • [DH] libavformat/hlsenc.c

• ffmpeg setting ouput option correctly (-r)

  25 mars 2018, par machinery

  I would like to use ffmpeg on Ubuntu with the following command :

  ffmpeg -i input_video -vf scale=w=320:h=-1 -y -vcodec libx264 -preset ultrafast -r 60 output_video

  For the -r option the documentation says :

  -r[:stream_specifier] fps (input/output,per-stream)

  Set frame rate (Hz value, fraction or abbreviation).

  As an input option, ignore any timestamps stored in the file and
  instead generate timestamps assuming constant frame rate fps. This is
  not the same as the -framerate option used for some input formats like
  image2 or v4l2 (it used to be the same in older versions of FFmpeg).
  If in doubt use -framerate instead of the input option -r.

  As an output option, duplicate or drop input frames to achieve
  constant output frame rate fps.

  I would like to use the output option. How can I do this ? What is the per-stream option doing (it is not written above) ?

  Second, is it correct that the -vf scale=w=320:h=-1 option scaled the video to width 320 and keeping the aspect ratio ?

• How can FFmpeg support the segment_size option ?

  19 avril 2023, par Donething

  This option is used to limit the size of the file segment.

  


  ChatGPT said that this option is available from version 4.1 (released in November 2018), but the compiled version I downloaded from the official website does not have this option.

  


  Then I wanted to compile it myself. After Git clone the source code, I added segment support according to the configuration ChatGPT said and then compiled and installed it.

  


  However, there was still no such option.

  


  ./configure --enable-gpl --enable-libx264 --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx265 --enable-libaom --enable-version3 --enable-libfdk-aac --enable-nonfree --enable-muxer=segment


  


  Does FFmpeg have this option ? ? ?