This has been often discussed, and everyone agreed it was a good idea.
Here are patches which add such an API, but without making proper use
of it yet.
wm4 (6):
lavu: improve documentation of some AVFrame functions
lavc: factor apply_param_change() AV_EF_EXPLODE handling
lavc: introduce a new decoding/encoding API with decoupled
input/output
ffmpeg: remove sub-frame warning
ffmpeg: use new decode API
ffmpeg: use new encode API
ffmpeg.c | 122 +++++++++++++--------
ffmpeg.h | 1 -
libavcodec/avcodec.h | 223 +++++++++++++++++++++++++++++++++++++
libavcodec/internal.h | 12 ++
libavcodec/utils.c | 297 +++++++++++++++++++++++++++++++++++++++++++++++---
libavutil/frame.h | 12 ++
6 files changed, 606 insertions(+), 61 deletions(-)
--
2.7.0
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