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authorFabrice Bellard <fabrice@bellard.org>2002-05-25 22:26:48 +0000
committerFabrice Bellard <fabrice@bellard.org>2002-05-25 22:26:48 +0000
commit360d33c9b6e4d86b9c97ab0a53f0634e8f335c31 (patch)
treea52f6dd3e3bc727a3b1ece812686190f08c4b09a /doc
parent773a21b8fef557094cb57a07b2097b98a8ee9496 (diff)
update
Originally committed as revision 589 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'doc')
-rw-r--r--doc/README.tech25
-rw-r--r--doc/TODO26
2 files changed, 22 insertions, 29 deletions
diff --git a/doc/README.tech b/doc/README.tech
index e110b3a960..a963992184 100644
--- a/doc/README.tech
+++ b/doc/README.tech
@@ -27,20 +27,23 @@ Video:
vectors. Currently, only fcode = 1 is used for both H263/MPEG1. Half
pel vectors are used.
-I also plan to improve the bitrate control which is too simplistic.
-
Audio:
-----
-- I rewrote the mpeg audio layer 2 compatible encoder from scratch. It
- is one of the simplest encoder you can imagine (800 lines of C code
- !). It is also one of the fastest because of its simplicity. There
- are still some problems of overflow. A minimal psycho acoustic model
- could be added. Currently, stereo is supported, but not joint
- stereo.
+- The mpeg audio layer 2 compatible encoder was rewritten from
+ scratch. It is one of the simplest encoder you can imagine (800
+ lines of C code !). It is also one of the fastest because of its
+ simplicity. There are still some problems of overflow. A minimal
+ psycho acoustic model could be added. Currently, stereo is
+ supported, but not joint stereo.
-- I rewrote the AC3 audio encoder from scratch. It is fairly naive,
- but the result are quiet interesting at 64 kbit/s. It includes
- extensions for low sampling rates used in some Internet
+- The AC3 audio encoder was rewritten from scratch. It is fairly
+ naive, but the result are quiet interesting at 64 kbit/s. It
+ includes extensions for low sampling rates used in some Internet
formats. Differential and coupled stereo is not handled. Stereo
channels are simply handled as two mono channels.
+
+- The mpeg audio layer 3 decoder was rewritten from scratch. It uses
+ only integers and can be 16 bit precision for the synthesis filter
+ at the expense of a slight precision loss. A slower bit exact mode
+ is available too for compliance testing.
diff --git a/doc/TODO b/doc/TODO
index 6ef809284f..73337fad9c 100644
--- a/doc/TODO
+++ b/doc/TODO
@@ -3,26 +3,16 @@ ffmpeg TODO list:
(in approximate decreasing priority order)
-Short term glantau's fixes:
-- regression tests (done).
-- mpeg1/2 decode fix (unfortunately not much speed increase) (done)
-- fix WORDS_BIGENDIAN issue (done)
-- remove win project files (done)
-- remove sub_xxx functions (done)
-- mpeg2 transport stream support (decoding done)
-- improved auto guess for formats (api change again in demux) (done)
-- fix mpeg format tracking + handle frame rate change (done)
-- suppress strlcpy (done)
-
-- split mux/demux functions. (done)
-- use av_new_stream() (partially done)
-
+Short term fixes:
+- mpeg audio fix
+- ffserver fix
+- fix stream selection (aka map) syntax. Start stream numbers at 1 in
+ listing. Find a syntax for stream ids (such as TS pids).
- reconstruct mpeg header frame rate in telecine case so that we do
- not need to ifner the real rate if it is not possible.
+ not need to infer the real rate if it is not possible.
- remove unused DCT code.
-- mpeg audio fix
-- AV sync fix (new api for demux)
-- RTP streaming support in ffserver
+- AV sync fix
+- RTP/RTSP streaming support in ffserver and in libav
- minimal support of video in ffplay
Planned in next releases: