ââââââââââââââââââââââââââââââââââââââââââ
 â RELEASE NOTES for FFmpeg 2.4 "Fresnel" â
 ââââââââââââââââââââââââââââââââââââââââââ

   The FFmpeg Project proudly presents FFmpeg 2.4 "Fresnel", just 2 months
   after the release of 2.3. Since this wasn't a long time ago, the Changelog
   is a bit short this time.

   The most important thing in this release is the major version bump of the
   libraries.  This means that this release is neither ABI-compatible nor
   fully API-compatible. But on the other hand it is aligned with the Libav
   11 release series, and will as a result probably end up being maintained for
   a long time.

   As usual, if you have any question on this release or any FFmpeg related
   topic, feel free to join us on the #ffmpeg IRC channel (on
   irc.freenode.net).

   ââââââââââââââââââââââââââââââ
   â ð¨  API Information         â
   ââââââââââââââââââââââââââââââ

     FFmpeg 2.4 includes the following library versions:

       ⢠libavutil      54.7.100
       ⢠libavcodec     56.1.100
       ⢠libavformat    56.4.101
       ⢠libavdevice    56.0.100
       ⢠libavfilter     5.1.100
       ⢠libswscale      3.0.100
       ⢠libswresample   1.1.100
       ⢠libpostproc    53.0.100

     Important API changes since 2.3:

       ⢠The new field mime_type was added to AVProbeData, which can
         cause crashes, if it is not initialized.
       ⢠Some deprecated functions were removed.
       ⢠The avfilter_graph_parse function was made compatible with Libav.
       ⢠The Matroska demuxer now outputs verbatim ASS packets.

     Please refer to the doc/APIchanges file for more information.

 ââââââââââââââââââââââââââââââ
 â â  List of New Features    â
 ââââââââââââââââââââââââââââââ

   ââââââââââââââââââââââââââââââ
   â libavformat                â
   ââââââââââââââââââââââââââââââ

    ⢠Icecast protocol.
    ⢠API for live metadata updates through event flags.
    ⢠UTF-16 support in text subtitles formats.
    ⢠The ASS muxer now reorders the Dialogue events properly.
    ⢠support for H.261 RTP payload format (RFC 4587)
    ⢠HEVC/H.265 RTP payload format (draft v6) depacketizer

   ââââââââââââââââââââââââââââââ
   â libavfilter                â
   ââââââââââââââââââââââââââââââ

    ⢠Ported lenscorrection filter from frei0r filter.
    ⢠Large optimizations in dctdnoiz to make it usable.
    ⢠Added codecview filter to visualize information exported by some codecs.
    ⢠Added silenceremove filter.

   ââââââââââââââââââââââââââââââ
   â libavutil                  â
   ââââââââââââââââââââââââââââââ

    ⢠Added clip() function in eval.

 ââââââââââââââââââââââââââââââ
 â â   Behaviour changes       â
 ââââââââââââââââââââââââââââââ

  ⢠dctdnoiz filter now uses a block size of 8x8 instead of 16x16 by default
  ⢠-vismv option is deprecated in favor of the codecview filter
  ⢠libmodplug is now detected through pkg-config
  ⢠HTML documentation generation through texi2html is deprecated in
    favor of makeinfo/texi2any
  ⢠ICY metadata are now requested by default with the HTTP protocol