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• Does ffmpeg now natively support DTS-HD decoding ?

  20 octobre 2017, par Tom Arrow

  I know there used to be a —enable-libdcadec switch, but the newest builds available on ffmpeg.org don’t have it enabled.

  Also, DTS-HD is listed in the available decoders list.

  Also, I’ve seen some commit from not long ago that said "Remove libdcadec, we already have it merged internally"

  Also, I do get different results depending on whether I try to decode dtshd or dts files. (encoded directly to flac 5.1)

  So, any official statement on this ? Can I trust this ?

• How install ffmpeg on wamp server (windows 7 - x64)

  15 avril 2015, par MoonLight

  Please take a look at all these depricated links :
  http://stackoverflow.com/search?q=Install+ffmpeg+in+windows

  i installed wamp server on my windows 7 (x64) machine and want to install ffmpeg on it.

  here is my wamp server version :
  wampserver2.5-Apache-2.4.9-Mysql-5.6.17-php5.5.12-64b

  

  here is the official web site of ffmpeg :
  http://ffmpeg-php.sourceforge.net/

  i am really confused where can i download ffmpeg extension for php5.5.12 and how install it ?
  in their official web site there is only one link for download :
  http://sourceforge.net/projects/ffmpeg-php/

  and those downloaded files need perl to run and there is no dll files inside them.
  would be really appreciate to help me step by step to install ffmpeg in my wamp server.

• How to generate the first few HLS playlist files for a live broadasting event ?

  1er mars 2014, par user3367166

  Knowing that HLS is based on a playlist of N segment files, how to properly generate the first (N-1) playlist files for a live broadcasting event (sliding window method) ?
   should we wait for the first N segments to be recorded, and send a complete first playlist file ? This of course works but means that there is a delay of N x segment_duration before streaming starts.
   or is there an official way of sending "partial" playlist files such that streaming starts after 1 x segment_duration ?

  I have experimented with partial playlist files : ffmpeg 2.1.3 appends new segments into the playlist as they are recorded (below). I find this a reasonable way but my ipod5 usually stops playback after the first playlist or sometimes manages to playback the first few playlists but with much choppiness, so I believe it is not a supported way. Is there any official solution ?

  1. 1st playlist file :

     #EXTM3U
     
     #EXT-X-VERSION:3
     
     #EXT-X-TARGETDURATION:8
     
     #EXT-X-MEDIA-SEQUENCE:0
     
     #EXTINF:8,
     
     segment0.ts

  2. 2nd playlist file :

     #EXTM3U
     
     #EXT-X-VERSION:3
     
     #EXT-X-TARGETDURATION:8
     
     #EXT-X-MEDIA-SEQUENCE:0
     
     #EXTINF:8,
     
     segment0.ts
     
     #EXTINF:1,
     
     segment1.ts

  3. 3rd playlist file :

     #EXTM3U
     
     #EXT-X-VERSION:3
     
     #EXT-X-TARGETDURATION:8
     
     #EXT-X-MEDIA-SEQUENCE:0
     
     #EXTINF:8,
     
     segment0.ts
     
     #EXTINF:1,
     
     segment1.ts
     
     #EXTINF:8,
     
     segment2.ts