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diff --git a/doc/RELEASE_NOTES b/doc/RELEASE_NOTES deleted file mode 100644 index bda4789aff..0000000000 --- a/doc/RELEASE_NOTES +++ /dev/null @@ -1,75 +0,0 @@ -Release Notes -============= - -* 11 "One Louder" - -General notes -------------- - -With this release we are trying to answer the numerous calls from our users for -shorter development cycles. From now on we will aim for approximately two major -releases per year. - -Libav 11 is API-, but not ABI-compatible with the previous major release. This -means that the code using our libraries needs to be rebuilt, but no source -changes should be required. Note however, that a number of old APIs remain -deprecated and will be dropped in the near future. All users are strongly -encouraged to update their code as soon as possible. The doc/APIchanges file in -the Libav source tree and the migration guide on the wiki should help with -migration to the new APIs. If those are not sufficient, do not hesitate to -contact us on IRC or through the user mailing list. - -One specific API issue in libavformat deserves mentioning here. When using -libavcodec for decoding or encoding and libavformat for demuxing or muxing, -the standard practice was to use the stream codec context (AVStream.codec) for -actual decoding or encoding. There are multiple problems with this pattern -(the main one is that the decoder/demuxer or encoder/muxer are not necessarily -synchronized and may overwrite each other's state), so it is now strongly -discouraged and will likely be deprecated in the future. Users should instead -allocate a separate decoding or encoding context and populate it from the -demuxing codec context (or the reverse for encoding) with the -avcodec_copy_context() function. - -The main highlights of this release include native Opus, VP7, OpenEXR, and On2 -AVC decoders, HEVC encoding through libx265, new APIs for exporting ReplayGain -and display transformation metadata and countless bug fixes. A large effort was -also expended on internal cleanups which are not very visible to our users, -but should make the codebase cleaner, safer and easier to maintain and extend. -One point worth mentioning is refactoring the large monolithic framework for -architecture-specific codec optimizations into small blocks, which reduces the -size of configurations that selectively enable or disable certain codecs. - -The avserver streaming tool, which has not been maintained for many years and -was mostly broken, was removed from the tree. It was decided that it is a -significant maintenance burden and that we do our users no service by pretending -to support it, while we in fact do not. - -See the Changelog file for a more extensive list of significant changes. - -API changes ------------ - -A number of additional APIs have been introduced and some existing functions -have been deprecated and are scheduled for removal in the next release. -Significant API changes include: - -[libavcodec] -+ Added the avcodec_copy_context() function that must from now on be used for - freeing codec contexts. -+- Added a new VDA hardware acceleration API, since the old one was broken and - not fixable in a compatible way. Deprecated the old VDA API. - -[libavformat] -+ Added support for exporting stream-global (as opposed to per-packet) side - data. This feature is now used by some demuxers to export ReplayGain or - display transformation matrix (aka rotation) or stereoscopic 3D mode. -+ Added an API for live metadata updates through event flags. -+- Changed the way to provide a hint about the desired timebase to muxers. - Previously it was done by setting AVStream.codec.time_base. Now callers - should set AVStream.time_base. - -[libavresample] -+ Added an API for working with AVFrames. - -Please see the file doc/APIchanges for details along with similar -programmer-centric information. |