mirror of https://git.ffmpeg.org/ffmpeg.git
RELEASE_NOTES: update for 2.5
If you spot something missing wrong or improvable, do not hesitate to push fixes Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer
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┌────────────────────────────────────────┐
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│ RELEASE NOTES for FFmpeg 2.4 "Fresnel" │
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│ RELEASE NOTES for FFmpeg 2.5 "Bohr" │
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└────────────────────────────────────────┘
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The FFmpeg Project proudly presents FFmpeg 2.4 "Fresnel", just 2 months
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after the release of 2.3. Since this wasn't a long time ago, the Changelog
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The FFmpeg Project proudly presents FFmpeg 2.5 "Bohr", just 2.5 months
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after the release of 2.4. Since this wasn't a long time ago, the Changelog
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is a bit short this time.
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The most important thing in this release is the major version bump of the
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libraries. This means that this release is neither ABI-compatible nor
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fully API-compatible. But on the other hand it is aligned with the Libav
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11 release series, and will as a result probably end up being maintained for
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a long time.
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As usual, if you have any question on this release or any FFmpeg related
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topic, feel free to join us on the #ffmpeg IRC channel (on
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irc.freenode.net).
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@ -20,24 +14,21 @@
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│ 🔨 API Information │
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└────────────────────────────┘
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FFmpeg 2.4 includes the following library versions:
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FFmpeg 2.5 includes the following library versions:
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• libavutil 54.7.100
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• libavcodec 56.1.100
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• libavformat 56.4.101
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• libavdevice 56.0.100
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• libavfilter 5.1.100
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• libswscale 3.0.100
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• libswresample 1.1.100
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• libpostproc 53.0.100
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• libavutil 54.15.100
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• libavcodec 56.13.100
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• libavformat 56.15.102
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• libavdevice 56. 3.100
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• libavfilter 5. 2.103
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• libswscale 3. 1.101
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• libswresample 1. 1.100
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• libpostproc 53. 3.100
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Important API changes since 2.3:
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Important API changes since 2.4:
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• avpriv_dv_frame_profile2() has been deprecated
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• The new field mime_type was added to AVProbeData, which can
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cause crashes, if it is not initialized.
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• Some deprecated functions were removed.
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• The avfilter_graph_parse function was made compatible with Libav.
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• The Matroska demuxer now outputs verbatim ASS packets.
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Please refer to the doc/APIchanges file for more information.
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@ -45,37 +36,64 @@
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│ ★ List of New Features │
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└────────────────────────────┘
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┌────────────────────────────┐
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│ ffprobe │
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└────────────────────────────┘
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• -show_pixel_formats option
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┌────────────────────────────┐
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│ ffserver │
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└────────────────────────────┘
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• codec private options support
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┌────────────────────────────┐
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│ libavcodec │
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└────────────────────────────┘
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• STL subtitle decoder
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• libutvideo YUV 4:2:2 10bit support
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• animated WebP decoding support
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• zygoaudio decoding support
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┌────────────────────────────┐
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│ libavdevice │
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└────────────────────────────┘
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• XCB-based screen-grabber
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• AVFoundation screen capturing support
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┌────────────────────────────┐
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│ libavformat │
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└────────────────────────────┘
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• Icecast protocol.
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• API for live metadata updates through event flags.
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• UTF-16 support in text subtitles formats.
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• The ASS muxer now reorders the Dialogue events properly.
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• HEVC/H.265 RTP payload format (draft v6) packetizer
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• SUP/PGS subtitle demuxer
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• STL subtitle demuxer
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• UDP-Lite support (RFC 3828)
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• creating DASH compatible fragmented MP4, MPEG-DASH segmenting muxer
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• WebP muxer
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• APNG demuxer
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┌────────────────────────────┐
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│ libavfilter │
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└────────────────────────────┘
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• Ported lenscorrection filter from frei0r filter.
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• Large optimizations in dctdnoiz to make it usable.
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• Added codecview filter to visualize information exported by some codecs.
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• Added silenceremove filter.
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• xBR scaling filter
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┌────────────────────────────┐
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│ libavutil │
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└────────────────────────────┘
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• Added clip() function in eval.
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• CAST128 symmetric block cipher, ECB mode
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┌────────────────────────────┐
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│ libpostproc │
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└────────────────────────────┘
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• visualization support
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┌────────────────────────────┐
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│ ⚠ Behaviour changes │
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└────────────────────────────┘
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• dctdnoiz filter now uses a block size of 8x8 instead of 16x16 by default
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• -vismv option is deprecated in favor of the codecview filter
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• libmodplug is now detected through pkg-config
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• HTML documentation generation through texi2html is deprecated in
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favor of makeinfo/texi2any
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• ICY metadata are now requested by default with the HTTP protocol
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