┌────────────────────────────────────────┐ | |
│ RELEASE NOTES for FFmpeg 2.4 "Fresnel" │ | |
└────────────────────────────────────────┘ | |
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). | |
┌────────────────────────────┐ | |
│ 🔨 API Information │ | |
└────────────────────────────┘ | |
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. | |
┌────────────────────────────┐ | |
│ ★ List of New Features │ | |
└────────────────────────────┘ | |
┌────────────────────────────┐ | |
│ libavformat │ | |
└────────────────────────────┘ | |
• 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 | |
┌────────────────────────────┐ | |
│ libavfilter │ | |
└────────────────────────────┘ | |
• 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. | |
┌────────────────────────────┐ | |
│ libavutil │ | |
└────────────────────────────┘ | |
• Added clip() function in eval. | |
┌────────────────────────────┐ | |
│ ⚠ Behaviour changes │ | |
└────────────────────────────┘ | |
• 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 |