changes.txt

H.264视频编码器(ITU的264编码参考软件)

Note:
* FMO is currently broken

Changes for Version JM 3.8 to JM 3.7
------------------------------------

New features
* Adaptive Block-size Transforms (MW)

Changes for Version JM 3.7 to JM 3.6
------------------------------------

New features
* Loop filter complexity reduction [JVT-C094] (AJ)


Changes for Version JM 3.6 to JM 3.5
------------------------------------

New features
* support for FMO, see JVT-C089-C092 (SW)
  -> FMO requires RTP file format and ConstrainedIntraPrediction = 1

Bug Fixes
* many FMO and out-of-order slices related ones (SW)
* fix old QPs (KS)
* fix chroma coding (AT/KS)
* error concealment fix (YW)

Cleanups
* really remove old start codes (KS)
* remove some unused decoder functions (KS)

Note:
* in Version 3.5 and 3.6 is in the bit stream format the Slice mode broken
* RTP still has the ASCII Parameter Set format

Changes for Version JM 3.4 to JM 3.5
------------------------------------

New Features
* improved SP technique [JVT-c114] (FW)
* add syntax flag for switching (FW)


Bug Fixes
* new QP range bug fixes (chroma & SP coding) (AT/FW)
* SKIP mode support and Runlength Coding for SP frames (AT/FW)
* Modified lambda weight in RDO for SP frames (AT/FW)


Changes for Version JM 3.4 to JM 3.3
------------------------------------

New Features
* stuffing to prevent emulation of start-code [JVT-C064] (SR)
* New start-code for byte-stream format. (SR)
* New method for slice-level QP signaling [JVT-C136] (SR)
* QP range shifted to [0,51] (SR)
  -> use #define _OLDSTYLEQP_ for old range

Bug Fixes
* fix single reference frame problem (AT)
* fix B-Frame coding (AT)
* fix ADAPT_LAST_GROUP (DT)
* fix bit statistics (KS)
* fix search if _FAST_FULL_ME_ disabled (KS)

Cleanups
* remove old slice-level QP signaling (KS)
* remove old start codes (KS)
* large QP handling cleanups (KS)


Changes for Version JM 3.3 to JM 3.2
------------------------------------

New Features
* Consideration of MVs of Direct Mode Macroblocks in B frame MV prediction [JVT-C127] (AT)

Bug Fixes
* fix deblocking filter for B frames [JVT-C127] (AT)


Changes for Version JM 3.2 to JM 3.1
------------------------------------

New Features
* Skip mode motion compensation as defined in JVT-C027 (JL)


Changes for Version JM 3.1 to JM 3.0
------------------------------------

New Features
* Quantization range changed from [-8,39] to [-12,39] [JVT-B039] (AH)
* Simplified rounding for transform and quantization [JVT-C136] (AH)
* Simplified formula for intra 16x16 plane prediction [JVT-C136] (AH)

Bug Fixes
* fix RTP assert (DT)

Cleanups
* remove gcc warnings (KS)

Known Problems
* AFF + 1/8 pel motion compensation broken
* if "LastFrameNumber" is used, "FramesToBeEncoded" must be >= "LastFrameNumber"


Changes for Version JM 3.0 to JM 2.1
------------------------------------

New Features
* Signaling of "Clean" Random Access Points [JVT-B042, JVT-C083] (DT)

Bug Fixes
* error concealment fixes (TO)
* constrained intra prediction (GRC)
* align intra pred to CD text (GRC)
* adaptive frame/field fixes 
  - lambda calculation (LW)
  - average psnr output (LW)
  - fix slice modes 1 and 2 (LW)
  - fix data partitioning (TO)
* add adaptive frame/field parameter consistency checks (KS/LW)
* encoder frame buffer management changes for non-AFF mode (DT)

Cleanups
* remove old 6 mode intra prediction (KS)


Changes for Version JM 2.1 to JM 2.0b
-------------------------------------

New Features
* adaptive frame/field coding (LW)

Bug Fixes
* intra 4x4 prediction block availability (several people)
* DP fixes (TO)


Changes for Version JM 2.0b to JM 2.0
-------------------------------------
Bug Fixes
* fix array bounds overflow in cabac.c (KS/IM)
* fix byte sex issues in IFF (KS)
* add UNIX preparation script (KS)


Changes for Version JM 2.0 to JM 1.9
-------------------------------------
I dropped adaptive frame/field coding, so only bugfixes for this release

Bug Fixes
* decoder delta qp decoding fix (HS)
* correction of wrong calculation of written bits in CABAC mode 
  (correction according to the new coding engine) (DM)
* major cleanup of the routines related to the statistics reported 
  in stat.dat (DM):
  - correction of wrong calculation of used bits for header and mode info
  - addition of new table entries "motion info" and "stuffing bits"
    such that the sum of all entries matches _exactly_ the 
    plotted number of average bits/frame, which in turn is
    now equal to the number of bits reported on the console
* correction of wrong calculation of written bytes for CABAC in RTP mode  (DM)
* correction of total bits/frame printed out to the data.txt file for with B-frames (JL)
* fix mprr size for new intra pred modes (GC)
* fix frame_rate calculation for B-frames (GH)
* fix restriction on reference frames for intra frame period (KS)
* first step RPSL fixes (KS)
* fix RTP assert (WYK)
* tracefile fix (DC)
* fix spelling of config file parameter "NumberReferenceFrames" (MB)

Changes for Version JM 1.9 to JM 1.8
-------------------------------------
New Features
* Loopfilter revised (PL)
* INTRA-Prediction on unfiltered content (PL)

Bug Fixes
* use for each intra pred mode one CABAC context (DM)
* increase version number (KS)
* Interim file format updates (DT)

Cleanups
* GCC compatibility, remove warnings/unused variables (KS)
* Add UNIX Makefiles (KS/HS)


Changes for Version JM 1.8 to JM 1.7
------------------------------------
New Features
* New Intra Prediction Modes [JVT-B080] (GrC)


Changes for Version JM 1.7 to JM 1.4
------------------------------------
New Features
* New Arithmetic Coding Engine [JVT-B036, Moffat/Neal/Witten ACM98]
* Improved CABAC [JVT-B101] (GB)
* Improved MB Pred Modes [JVT-B054] (HS)

Bug Fixes
* Fix MB statistics (HS)
* Compile fix ERPS test (KS)
* Restrict qp_factor for CABAC initialization (DM/KS)
* Uses MAX_QP for IFF qp encoding (KS)
* Fix decoder TR calculation (again) (AT)
* Fix wrong concealment for B-frames and TR wrap around (KS)
* Correct error handling if first slice (or first frame) was lost (TO)
* Introduced macroblock map for concealment of lost or damaged macroblocks (TO)


Changes for Version JM 1.4 to JM 1.0
------------------------------------
New Features
* Interim file format according to Appendix III of WD-1 [JVT-A003] (DT)
* Transform and Quantizer changes [JVT-B008, JVT-B038] (AH)
* VLC update [JVT-B029] (LK)
* Updated Error Rebust Macroblock Mode and Reference Frame Selection [JVT-B102] (DK)

Bug Fixes
* DP & CABAC (TO)



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
People:
KS      Karsten Suehring        [e-mail]
SM      Siwei Ma                [e-mail]
AF      Arild Fuldseth          [e-mail]
AH      Antti Hallapuro         [e-mail]
AJ      Anthony Joch            [e-mail]
AS      Albert Simpson          [e-mail]
AT      Alexis Michael Tourapis [e-mail]
AW      Armand Wemelsfelder     [e-mail]
BH      Barry Haskell           [e-mail]
CG      Cristina Gomila         [e-mail]
CS	Christian Schmidt	[e-mail]
DC      Doug Chin               [e-mail]
DD      Dmitriy Demin           [e-mail]
DH      Dzung Hoang             [e-mail]
DK      Dimitris Kontopodis     [e-mail]
DM      Detlev Marpe            [e-mail]
DT      Dong Tian               [e-mail]
DW      Dong Wang               [e-mail]
ES	Eric Setton		[e-mail]
FB      Frank Bossen            [e-mail]
GB      Gabi Blaetterman        [e-mail]
GC      Guy Cote                [e-mail]
GrC     Greg Conklin            [e-mail]
GS      Gary Sullivan           [e-mail]
FW      Feng Wu                 [e-mail]
HS      Heiko Schwarz           [e-mail]
IL      Inge Lille-Langoy       [e-mail]
IM      Iole Moccagatta         [e-mail]
JA      James Au                [e-mail]
JB      Jill Boyce              [e-mail]
JC      John Cox                [e-mail]
JK      Jeong Kwon Kim          [e-mail]
JL      Jani Lainema            [e-mail]
JS      Joonho Song             [e-mail]
JX      Jian Feng Xu            [e-mail]
KL      Karl Lillevold          [e-mail]
KP      Krit Panusopone         [e-mail]
KSa     Kazushi Sato            [e-mail]
LK      Louis Kerofsky          [e-mail]
LW      Limin Wang              [e-mail]
LWi     Lowell Winger           [e-mail]
LP	Luca Pezzoni		[e-mail]
MB      Marcus Barkowsky        [e-mail]
MG      Michael Gallant         [e-mail]
ML      Maxim Lobasso           [e-mail]
MN      Mike Nilsson            [e-mail]
MW      Mathias Wien            [e-mail]
MWa	Michael Walter		[e-mail]
OD      Olivier Deygas          [e-mail]
PK      Petr Kadlec             [e-mail]
PL      Peter List              [e-mail]
PN      Pavel Novotny           [e-mail]
PW      Ping Wu                 [e-mail]
RG      Rajeev Gandhi           [e-mail]
RK      Ragip Kurceren          [e-mail]
RS      Rickard Sjoberg         [e-mail]
RaS     Raghavan Subramaniyan   [e-mail]
RV      Rajesh Kumar S Venkata  [e-mail]
SR      Shankar Regunathan      [e-mail]
SM	Sebastian Manciulea	[e-mail]
SN	Satoshi Nakagawa	[e-mail]
SW      Stephan Wenger          [e-mail]
SY      Steve Yao               [e-mail]
TH      Till Hallbach           [e-mail]
THi	Tobias Hinz		[e-mail]
TK      Thomas Kunlin           [e-mail]
TO      Tobias Oelbaum          [e-mail]
TS      Teruhiko Suzuki         [e-mail]
TSh     Tamar Shoham            [e-mail]
TSt     Thomas Stockhammer      [e-mail]
TW      Thomas Wiegand          [e-mail]
TWe     Thomas Wedi             [e-mail]
TWa     Toby Walker             [e-mail]
VG      Valeri George           [e-mail]
VV      Viktor Varsa            [e-mail]
WF	Wenfang Fu		[e-mail]
WK	Woo-Shik Kim		[e-mail]
WYK     Ye-Kui Wang             [e-mail]
WZ      Weimin Zeng		[e-mail]
YK      Yoshihiro Kikuchi       [e-mail]
YL      Yann Lemaguet           [e-mail]
YW      Ye-Kui Wang             [e-mail]
XS      Xiaoyan Sun             [e-mail]      
ZH	Zhou Heng		[e-mail]
ZL      Li Zhang                [e-mail]
ZX      Z. Xue                  [e-mail]
ZY      Zheng Yanzhao           [e-mail]