mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
3.0 KiB
74 lines
3.0 KiB
Release Notes |
|
============= |
|
|
|
* 0.9 "Harmony" December, 2011 |
|
|
|
|
|
General notes |
|
------------- |
|
This release is binary compatible with 0.8. The 'ffmpeg' command-line tool has |
|
been extended to also support the command line syntax and features of a tool |
|
called avconv. |
|
|
|
Additionally, this release introduces a number of new interesting codecs |
|
such as the Apple Prores, Flash Screen Video 2 and Windows Media Image, |
|
and muxers such as LATM or CELT in Ogg, among many others. Moreover, our |
|
H.264 decoder has been improved to decode 4:2:2 material and our libx264 |
|
wrapper now allows to produce 4:2:2 and 4:4:4 video. |
|
|
|
See the Changelog file for a list of significant changes. Note, there |
|
are many more new features and bugfixes than whats listed there. |
|
|
|
Bugreports against FFmpeg git master or the most recent FFmpeg release are |
|
accepted. If you are experiencing issues with any formally released version of |
|
FFmpeg, please try git master to check if the issue still exists. If it does, |
|
make your report against the development code following the usual bug reporting |
|
guidelines. |
|
|
|
|
|
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: |
|
|
|
* new audio decoding API which decodes from an AVPacket to an AVFrame and |
|
is able to use AVCodecContext.get_buffer() in the similar way as video decoding. |
|
|
|
* new audio encoding API which encodes from an AVFrame to an AVPacket, thus |
|
allowing it to properly output timing information and side data. |
|
|
|
* rewritten AVOptions API with better built-in support for private options. |
|
|
|
* private options support for demuxers [avformat_open_input()], muxers |
|
[avformat_write_header()], encoders and decoders [avcodec_open2()]. |
|
As a result, many format- or codec-specific fields and flags in AVFormatContext |
|
and AVCodecContext were deprecated -- notably most of CODEC_FLAG2_* and many |
|
CODEC_FLAG_*. |
|
|
|
* new API for custom IO interrupt callbacks. |
|
|
|
* #include cleanup in libavutil -- libavutil/avutil.h no longer includes all |
|
the other headers in libavutil, they must be included manually. One specific |
|
result is that libavutil/mathematics.h is no longer included from |
|
libavcodec/avcodec.h, which is a common source of errors. |
|
|
|
Please see the file doc/APIchanges for details along with |
|
similar programmer-centric information. |
|
|
|
|
|
|
|
Other notable changes |
|
--------------------- |
|
|
|
Libavcodec and libavformat built as shared libraries now hide non-public |
|
symbols. This will break applications using those symbols. Possible solutions |
|
are, in order of preference: |
|
1) Try finding a way of accomplishing the same with public API. |
|
2) If there is no corresponding public API, but you think there should be, |
|
post a request on the user mailing list or IRC channel. |
|
3) Finally if your program needs access to FFmpeg / libavcodec / libavformat |
|
internals for some special reason then the best solution is to link statically. |
|
|
|
Please see the Changelog file for a more detailed list of changes.
|
|
|