On Sat, Jul 12, 2014 at 3:08 AM, Clément Bœsch <u...@pkh.me> wrote: > On Fri, Jul 11, 2014 at 09:08:40PM -0700, Timothy Gu wrote: >> Based on a patch by Clément Bœsch <u...@pkh.me>. >> >> Signed-off-by: Timothy Gu <timothyg...@gmail.com> >> --- >> >> So, I rebased Clément's original patch and added (a lot) more stuff to make >> it >> a real official modern-looking release note. Some stuff I am not sure about: >> >> - Should we use Clément's format with all kinds of Unicode characters or >> stick to Markdown? > > We don't really render Markdown anywhere; here we can just link to the > raw on the repository and have a decent layout. We don't need complex > markup, unless we want to link to commit hashes or stuff?
OK. But the next two questions still stand. > >> - Does the new image auto-detection really work as advertised in "Behaviour >> changes" section? >> - Is there any stuff I missed in the "Behaviour changes" section? (I'm sure >> there are.) ----8<---- Based on a patch by Clément Bœsch <u...@pkh.me>. Signed-off-by: Timothy Gu <timothyg...@gmail.com> --- RELEASE_NOTES | 157 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 RELEASE_NOTES diff --git a/RELEASE_NOTES b/RELEASE_NOTES new file mode 100644 index 0000000..5d2830e --- /dev/null +++ b/RELEASE_NOTES @@ -0,0 +1,157 @@ + ┌─────────────────────────────────┐ + │ RELEASE NOTES for FFmpeg 2.3 │ + └─────────────────────────────────┘ + + The FFmpeg Project proudly presents FFmpeg 2.3, a new release completely + source-compatible to the FFmpeg 2.2 series. There are however some API + deprecations that you need to take care of. Use `git diff n2.2 n2.3 + doc/APIchanges` to show the list of added and deprecated APIs. + + In this release, there are lots of internal overhauls that make FFmpeg a + more accessible project for new developers. Many important new features + like native Opus decoder and QTKit and AVFoundation input devices are also + committed. + + Another major feature in this release is the introduction of AArch64 + (ARMv8) assembly optimization. AArch64 is another name for the first 64-bit + ARM architecture, used by Apple A7 SoC inside iPhone 5S. We have added some + x86 optimizations to accelerate the decoding of Huffyuv and HEVC, two very + different codecs in terms of age. + + Because of the increasing difficulty to maintain and lack of maintainers, + we are very sorry to say that we have removed all Blackfin and SPARC + architecture assembly optimizations with the cleanups done to FFmpeg. If + you are interested in maintaining optimization for these two architecture, + feel free to contact us and we will restore the code! + + Since this release, the traditional Changelog file is upgraded to this + modern-looking release note. Old change logs are moved to + doc/Changelog.old. + + Enjoy! + + ┌────────────────────────────┐ + │ Native Opus decoder │ + └────────────────────────────┘ + + Opus is an open audio format jointly developed by Xiph.Org, Mozilla, + Skype/Microsoft, and Broadcom. It combines the features of the Skype Cilk + speech codec and the Xiph.Org CELT music codec into one low-latency + codec. Decoding Opus is already possible since FFmpeg 1.0 using the + libopus library, but the new Opus native decoder brings a higher level of + stability and speed. + + ┌────────────────────────────┐ + │ QTKit and AVFoundation │ + └────────────────────────────┘ + + For OS X users, the new QTKit and AVFoundation devices allow you to use + the integrated camera on Macs. AVFoundation is a newer API only available + on OS X 10.7 "Lion" or newer. For users with older OS X systems, the + QTKit device using the older OS X API is for you. + + ┌────────────────────────────┐ + │ API Additions │ + └────────────────────────────┘ + + In this release, stream side data are introduced as AVStream.side_data as + a way to store miscellaneous stream-wide information. The format is + similar to the previously anonymous structure AVPacket.side_data (now + named as AVPacketSideData). With this change, audio ReplayGain + information and video rotation matrix are now exported through this API, + if available in the demuxer. + + We also have improved libswresample's Doxygen API documentation, so new + developers wishing to use FFmpeg's excellent libraries can get started + more easily and faster. + + ┌────────────────────────────┐ + │ Last But Not Least │ + └────────────────────────────┘ + + Other interesting new features including hqx video filter, a pixel art + scaling filter; a fixed-point AC-3 decoder contributed by Imagination + Technologies; a VP7 video decoder; an HTML5 WebVTT subtitle decoder that + allows creation of WebVTT from any text-based subtitles; and an 1-bit + Direct Stream Digital audio decoder. + + ┌────────────────────────────┐ + │ * API Information │ + └────────────────────────────┘ + + FFmpeg 2.3 includes the following library versions: + + • libavutil xx.yy.1zz + • libavcodec xx.yy.1zz + • libavformat xx.yy.1zz + • libavdevice xx.yy.1zz + • libavfilter xx.yy.1zz + • libswscale xx.yy.1zz + • libswresample xx.yy.1zz + • libpostproc xx.yy.1zz + + Please refer to the doc/APIChanges file for more information. + + ┌────────────────────────────┐ + │ ★ List of New Features │ + └────────────────────────────┘ + + ┌────────────────────────────┐ + │ Command line tools │ + └────────────────────────────┘ + + • Support for decoding through DXVA2 in ffmpeg + + ┌────────────────────────────┐ + │ libavcodec │ + └────────────────────────────┘ + + • AC3 fixed-point decoding + • VP7 video decoder + • Alias PIX image encoder and decoder + • Improvements to the BRender PIX image decoder + • Improvements to the XBM decoder + • Improvements to OpenEXR image decoder + • Support decoding 16-bit RLE SGI images + • Direct Stream Digital (DSD) decoder + • On2 AVC (Audio for Video) decoder + • Native Opus decoder + • WebVTT encoder + + ┌────────────────────────────┐ + │ libavdevice │ + └────────────────────────────┘ + + • QTKit input device + • GDI screen grabbing for Windows + • AVFoundation input device + + ┌────────────────────────────┐ + │ libavformat │ + └────────────────────────────┘ + + • subfile protocol + • Phantom Cine demuxer + • Alternative rendition support for HTTP Live Streaming + • Magic Lantern Video (MLV) demuxer + • Image format auto-detection + + ┌────────────────────────────┐ + │ libavfilter │ + └────────────────────────────┘ + + • shuffleplanes filter + • libbs2b-based stereo-to-binaural audio filter + • showcqt multimedia filter + • zoompan filter + • signalstats filter + • hqx filter (hq2x, hq3x, hq4x) + • flanger filter + + ┌────────────────────────────┐ + │ ⚠ Behaviour changes │ + └────────────────────────────┘ + + • libx264 reference frames count is now limited depending on level chosen + • Because of the new image format auto-detection feature, you don't need to + specify image format when decoding an image with no extension. \ No newline at end of file -- 1.9.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
