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# Date Author Comment
6b72ac63 10/30/2002 08:41 PM Michael Niedermayer

exporting the internal qscale table, this allso fixes the ordering

Originally committed as revision 1116 to svn://svn.ffmpeg.org/ffmpeg/trunk

d6db1c9c 10/27/2002 12:02 AM Michael Niedermayer

handle direct rendering buffer allocation failure

Originally committed as revision 1075 to svn://svn.ffmpeg.org/ffmpeg/trunk

50eb9cbc 10/25/2002 01:39 PM Michael Niedermayer

idct_permutation_type variable, so the permutation type can quickly be identified

Originally committed as revision 1071 to svn://svn.ffmpeg.org/ffmpeg/trunk

7801d21d 10/23/2002 03:11 PM Michael Niedermayer

optimize block_permute()
optimize dct_quantize_c()
dont permute s->q_inter/intra_matrix

Originally committed as revision 1067 to svn://svn.ffmpeg.org/ffmpeg/trunk

7da71a5c 10/22/2002 07:48 PM Michael Niedermayer

xvid qpel bug autodetect

Originally committed as revision 1064 to svn://svn.ffmpeg.org/ffmpeg/trunk

073b013d 10/16/2002 07:55 PM Michael Niedermayer

complete mpeg4 GMC decoding support

Originally committed as revision 1046 to svn://svn.ffmpeg.org/ffmpeg/trunk

a61f8265 10/14/2002 07:53 PM Michael Niedermayer

better padding bug detection

Originally committed as revision 1039 to svn://svn.ffmpeg.org/ffmpeg/trunk

b704e742 10/14/2002 12:21 PM Michael Niedermayer

mpeg4 header parser clenup (needed for parsing of VOL header in avctx->extradata)

Originally committed as revision 1032 to svn://svn.ffmpeg.org/ffmpeg/trunk

4d2858de 10/13/2002 01:16 PM Michael Niedermayer

better/cleaner error resilience (done in a 2nd pass after decoding)
h263/mpeg4 out of order slice decoding

Originally committed as revision 1030 to svn://svn.ffmpeg.org/ffmpeg/trunk

defdfc9a 10/04/2002 08:59 PM Alex Beregszaszi

moved dct init out from mpv_common_init to dct_common_init (for less-uglier way for dv)

Originally committed as revision 1002 to svn://svn.ffmpeg.org/ffmpeg/trunk

5917d17c 10/03/2002 08:57 PM Leon van Stuivenberg

ps2 optimizations update patch by (Leon van Stuivenberg <leonvs at iae dot nl>)

Originally committed as revision 996 to svn://svn.ffmpeg.org/ffmpeg/trunk

23e54f69 09/29/2002 11:21 PM Michael Niedermayer

renaming variable

Originally committed as revision 981 to svn://svn.ffmpeg.org/ffmpeg/trunk

2ad1516a 09/29/2002 10:44 PM Michael Niedermayer

idct permutation cleanup, idct can be selected per context now
fixing some threadunsafe code

Originally committed as revision 980 to svn://svn.ffmpeg.org/ffmpeg/trunk

9e4c6948 09/24/2002 03:07 PM Michael Niedermayer

adaptive quantization for h263

Originally committed as revision 969 to svn://svn.ffmpeg.org/ffmpeg/trunk

c5d309f2 09/23/2002 02:56 PM Michael Niedermayer

adaptive quantization (lumi/temporal & spatial complexity masking)

Originally committed as revision 964 to svn://svn.ffmpeg.org/ffmpeg/trunk

947ac25a 09/18/2002 06:30 PM Michael Niedermayer

10l (forgot to commit)

Originally committed as revision 953 to svn://svn.ffmpeg.org/ffmpeg/trunk

5596c60c 09/14/2002 10:07 PM Michael Niedermayer

dont store version for bit-exact tests

Originally committed as revision 948 to svn://svn.ffmpeg.org/ffmpeg/trunk

bea669e5 09/13/2002 09:45 AM Michael Niedermayer

interlaced mpeg4 b frame decoding

Originally committed as revision 936 to svn://svn.ffmpeg.org/ffmpeg/trunk

66370d3f 09/12/2002 12:26 PM Michael Niedermayer

statistics for forw & back p-MBs instead of just one counter for both

Originally committed as revision 925 to svn://svn.ffmpeg.org/ffmpeg/trunk

6b460aa3 09/11/2002 07:26 AM Michael Niedermayer

reducing sizeof MpegEncContext to avoid stack overflow on crap M$ windo$

Originally committed as revision 914 to svn://svn.ffmpeg.org/ffmpeg/trunk

ad324c93 09/01/2002 04:52 PM Michael Niedermayer

dct cleanup
more accurate mmx dct (dont discard bits for fun)
fixing mmx quantizer bug for qscale%2==1 (bias was slightly wrong)

Originally committed as revision 895 to svn://svn.ffmpeg.org/ffmpeg/trunk

c7e07931 08/30/2002 06:17 PM Martin Olschewski

sun solaris compilation bugfix, patch by (Martin Olschewski <olschewski at zpr dot uni-koeln dot de>)

Originally committed as revision 882 to svn://svn.ffmpeg.org/ffmpeg/trunk

28db7fce 08/29/2002 11:55 PM Michael Niedermayer

slow but accurate integer dct from IJG (should be ok with the LGPL as the old DCT is the fast integer DCT from IJG)
per context DCT selection

Originally committed as revision 878 to svn://svn.ffmpeg.org/ffmpeg/trunk

e769f053 08/26/2002 08:45 PM Alex Beregszaszi

added aspected_width/height for EXTENDED_PAR

Originally committed as revision 869 to svn://svn.ffmpeg.org/ffmpeg/trunk

3aa102be 08/25/2002 09:19 PM Michael Niedermayer

new ratecontrol code

Originally committed as revision 862 to svn://svn.ffmpeg.org/ffmpeg/trunk

1fb4890b 08/22/2002 07:41 PM Michael Niedermayer

better scene change detection

Originally committed as revision 858 to svn://svn.ffmpeg.org/ffmpeg/trunk

87f8cab4 08/06/2002 11:51 PM Michael Niedermayer

mpeg4 mpeg quantizer encoding

Originally committed as revision 844 to svn://svn.ffmpeg.org/ffmpeg/trunk

508abaca 08/05/2002 09:36 PM Michael Niedermayer

4mv + bframe decoding bugfix

Originally committed as revision 843 to svn://svn.ffmpeg.org/ffmpeg/trunk

d930ef19 08/02/2002 08:27 PM Michael Niedermayer

fixing mpeg4 mpeg quantizers

Originally committed as revision 836 to svn://svn.ffmpeg.org/ffmpeg/trunk

b5a093b3 07/25/2002 08:22 PM Michael Niedermayer

different edge positions fixed with edge emu / dr1

Originally committed as revision 814 to svn://svn.ffmpeg.org/ffmpeg/trunk

0fd90455 07/15/2002 02:15 PM Michael Niedermayer

uvlinesize
export has_b_frames
mb_skip with more than 2 ip buffers

Originally committed as revision 762 to svn://svn.ffmpeg.org/ffmpeg/trunk

93a21abd 07/14/2002 06:37 PM Michael Niedermayer

direct rendering method 1 support

Originally committed as revision 759 to svn://svn.ffmpeg.org/ffmpeg/trunk

45a82edb 07/13/2002 02:55 PM Michael Niedermayer

rl vlc decoding optimizations

Originally committed as revision 748 to svn://svn.ffmpeg.org/ffmpeg/trunk

adc09b2e 07/10/2002 09:01 PM Marko Kreen

adding ff prefix to avoid global name conficts with xvid (patch by Marko Kreen <marko at l-t.ee>)

Originally committed as revision 739 to svn://svn.ffmpeg.org/ffmpeg/trunk

de0f2f4c 07/07/2002 08:34 AM Michael Niedermayer

wmv1 slice_height != mb_height support
encoding of slice_height != mb_height
1bit shorter wmv1 headers if bit_rate<50 !? ROTFL M$ is even more stupid than i thought
using dc of non intra blocks for dc prediction of wmv1 if bitrate < 129 && res < 320x240

Originally committed as revision 723 to svn://svn.ffmpeg.org/ffmpeg/trunk

e0580f8c 07/03/2002 03:01 AM Falk Hüffner

Update and activate dct_unquantize_h263_mvi. Thanks to Måns Rullgård
for some improvements.

Originally committed as revision 714 to svn://svn.ffmpeg.org/ffmpeg/trunk

0151a6f5 06/18/2002 12:50 AM Michael Niedermayer

wmv1 support

Originally committed as revision 697 to svn://svn.ffmpeg.org/ffmpeg/trunk

c3aea5c4 06/04/2002 12:56 PM Fabrice Bellard

added missing externs (we were lucky that commons are used)

Originally committed as revision 659 to svn://svn.ffmpeg.org/ffmpeg/trunk

7f2fe444 06/02/2002 12:20 PM Michael Niedermayer

single coefficient elimination
prequantization
more readable malloc & check if NULL
error concealment / error resilience
b_quant_offset (unfinished, should be 0 for now)
data partitioning

Originally committed as revision 642 to svn://svn.ffmpeg.org/ffmpeg/trunk

cd4af68a 05/27/2002 04:42 PM Zdenek Kabelac
  • started to cleanup name clashes for onetime compilation

Originally committed as revision 617 to svn://svn.ffmpeg.org/ffmpeg/trunk

ff4ec49e 05/25/2002 10:45 PM Fabrice Bellard

license/copyright change

Originally committed as revision 599 to svn://svn.ffmpeg.org/ffmpeg/trunk

92ba5ffb 05/21/2002 11:13 PM Michael Niedermayer

workaround dc_scale bug in old ffmpeg msmpeg4v3 encoder (set workaround_bugs=1 for this)

Originally committed as revision 561 to svn://svn.ffmpeg.org/ffmpeg/trunk

9cd3766f 05/11/2002 11:42 PM Juanjo

- pict_type exported to AVCodecContext
- Added real_pict_num to AVCodecContext, it represent the number of the
previous encoded frame, usefull when coding with B frames.
- Warning fix in motion_est.c

Originally committed as revision 484 to svn://svn.ffmpeg.org/ffmpeg/trunk

a69b930c 05/07/2002 05:55 PM Alex Beregszaszi

clamp intra matrix to 8bit for mjpeg (workaround for qscale>=25)

Originally committed as revision 451 to svn://svn.ffmpeg.org/ffmpeg/trunk

7aaf3b98 05/06/2002 01:15 PM Michael Niedermayer

there are divx5? encoded files without a userdata section but with b-frames :(

Originally committed as revision 446 to svn://svn.ffmpeg.org/ffmpeg/trunk

bb71e317 04/30/2002 01:29 AM Michael Niedermayer

fixing msmpeg4v3 dc-scale for quantizers 24-31

Originally committed as revision 427 to svn://svn.ffmpeg.org/ffmpeg/trunk

2417652e 04/27/2002 01:12 PM Michael Niedermayer

export mbskip_table for direct rendering
add hurry_up support

Originally committed as revision 424 to svn://svn.ffmpeg.org/ffmpeg/trunk

d7e9533a 04/27/2002 12:30 PM Michael Niedermayer

fixed msmpeg4 infinite loop if buggy stream
rewrote quantizer
fixed bias (+10% compression/quality for h263 like codecs)
qscale=1 support
mpeg1 intra frames looks far less blocky
added codec_id field

Originally committed as revision 423 to svn://svn.ffmpeg.org/ffmpeg/trunk

1c2a8c7f 04/24/2002 01:24 AM Michael Niedermayer

avcodec_flush_buffers()

Originally committed as revision 420 to svn://svn.ffmpeg.org/ffmpeg/trunk

1ff662cc 04/22/2002 07:04 PM Michael Niedermayer

export delay info
fixed low_delay & vo_type on mpeg4 header writer & parser

Originally committed as revision 415 to svn://svn.ffmpeg.org/ffmpeg/trunk

eec1c6b9 04/22/2002 12:45 PM Michael Niedermayer

divx 5.01 support

Originally committed as revision 412 to svn://svn.ffmpeg.org/ffmpeg/trunk

8b4c7dbc 04/21/2002 09:18 PM Michael Niedermayer

fixed ratecontrol & b-frames
2pass ratecontrol
fixed hq with 2pass
inceased build num (a few more vars for the rc stuff)
hopefully no new bugs

Originally committed as revision 408 to svn://svn.ffmpeg.org/ffmpeg/trunk

91029be7 04/19/2002 03:25 AM Michael Niedermayer

much better ME for b frames (a bit slow though)
fixed MC rounding for b frames
fixed hq mode with b-frames

Originally committed as revision 406 to svn://svn.ffmpeg.org/ffmpeg/trunk

9dbf1ddd 04/17/2002 04:30 PM Michael Niedermayer

mpeg2/mpeg4 dequantizer support (c & mmx)
mpeg1 dequantizer optimizations

Originally committed as revision 404 to svn://svn.ffmpeg.org/ffmpeg/trunk

9dbcbd92 04/17/2002 04:32 AM Michael Niedermayer

fixed mpeg4 time stuff on encoding
mpeg4 b-frame enoding support
removed old, out-commented ratecontrol
reuse motion compensation code between encoding & decoding
prefix newly added global functions with ff_ to reduce namespace polution
b-frame ME (unfinished, but working)...

e4986da9 04/14/2002 06:57 PM Juanjo

- ME setting moved to AVCodecContext/MpegEncContext, no longer a global.
- EPZS ME algo used by default.
- HQ flag activated for ffmpeg.
- Cosmetics ...

Originally committed as revision 398 to svn://svn.ffmpeg.org/ffmpeg/trunk

3bf43d42 04/07/2002 02:03 AM Michael Niedermayer

mpeg4 mpeg quantizer support

Originally committed as revision 381 to svn://svn.ffmpeg.org/ffmpeg/trunk

84afee34 04/05/2002 04:09 AM Michael Niedermayer

msmpeg4v2 decoding (no encoding yet)

Originally committed as revision 376 to svn://svn.ffmpeg.org/ffmpeg/trunk

4d69fbc9 03/28/2002 10:50 PM Michael Niedermayer

force frame type for 2-pass encoding

Originally committed as revision 365 to svn://svn.ffmpeg.org/ffmpeg/trunk

ba6802de 03/27/2002 09:25 PM Michael Niedermayer

4MV motion estimation (not finished yet)
SAD functions rewritten (8x8 support & MMX2 optimizations)
HQ inter/intra decission
msmpeg4 encoding bugfix (MV where too long)

Originally committed as revision 362 to svn://svn.ffmpeg.org/ffmpeg/trunk

49092244 03/24/2002 09:25 PM Michael Niedermayer

resync marker support, needed for some mp4 files

Originally committed as revision 358 to svn://svn.ffmpeg.org/ffmpeg/trunk

174489bd 03/24/2002 04:16 AM Michael Niedermayer

10l (motion_val was uninitilized)
20l (first frame of a gop could be a p-frame sometimes)
add hq flag to MpegEncContext

Originally committed as revision 356 to svn://svn.ffmpeg.org/ffmpeg/trunk

098eefe1 03/23/2002 05:43 PM Michael Niedermayer

statistics for 2-pass encoding

Originally committed as revision 354 to svn://svn.ffmpeg.org/ffmpeg/trunk

11ce8834 03/22/2002 11:22 PM Michael Niedermayer

mpeg4 aspect_ratio_info in AVCodecContext (requested by alex)
experimental (& faster) motion estimation
squished a dirty uninitialized var bug
mpeg1 fcode>1 support

Originally committed as revision 349 to svn://svn.ffmpeg.org/ffmpeg/trunk

45870f57 03/22/2002 02:21 AM Michael Niedermayer

new motion estimation (epzs) not complete yet but allready pretty good :)
unlimited mv search range
minor bugfix in the mpeg4 header parser
reset picture in gop counter if scene change is detected

Originally committed as revision 344 to svn://svn.ffmpeg.org/ffmpeg/trunk

9cdd6a24 03/17/2002 04:31 PM Michael Niedermayer

hopefully better bitrate controll

Originally committed as revision 334 to svn://svn.ffmpeg.org/ffmpeg/trunk

4278e7a6 03/15/2002 02:57 PM Michael Niedermayer

optimization

Originally committed as revision 332 to svn://svn.ffmpeg.org/ffmpeg/trunk

d6231b9e 03/15/2002 04:10 AM Michael Niedermayer

use ac prediction in mpeg4 encoding (5% smaller intra-blocks/keyframes)
some minor optimizations
last non zero index cant be 64 bugfix

Originally committed as revision 331 to svn://svn.ffmpeg.org/ffmpeg/trunk

6f91bcd1 03/12/2002 10:54 PM Michael Niedermayer

mpeg4 b-frames :)
create slightly more correct headers & add "ffmpeg" user-data section

Originally committed as revision 328 to svn://svn.ffmpeg.org/ffmpeg/trunk

44eb4951 03/09/2002 01:01 PM Michael Niedermayer

divx5-gmc support
q-pel mc support
neither is totally bugfree yet though :(

Originally committed as revision 320 to svn://svn.ffmpeg.org/ffmpeg/trunk

73c8e514 03/07/2002 01:27 PM Michael Niedermayer

gmc bitstream decoding support (the real motion compensation isnt implemnted yet)

Originally committed as revision 318 to svn://svn.ffmpeg.org/ffmpeg/trunk

cc9ba006 03/05/2002 01:58 PM Michael Niedermayer

parsing more of the mpeg4 header & print some "not supported" stuff

Originally committed as revision 317 to svn://svn.ffmpeg.org/ffmpeg/trunk

d140623f 02/18/2002 07:33 PM Juanjo

- H.263+ decoder support for Advanded INTRA Coding (buggy)

Originally committed as revision 310 to svn://svn.ffmpeg.org/ffmpeg/trunk

3232bc88 02/18/2002 09:29 AM Zdenek Kabelac
  • using static instead of extern

Originally committed as revision 304 to svn://svn.ffmpeg.org/ffmpeg/trunk

b4dbd87c 02/15/2002 08:46 PM Juanjo

- Minor changes on bitrate control

Originally committed as revision 300 to svn://svn.ffmpeg.org/ffmpeg/trunk

e03c341e 02/10/2002 06:10 AM Juanjo

- More work on preliminary bit rate control, just to be able to get an
average variance for picture's MBs so we can adjust qscale on the MB layer.

Originally committed as revision 294 to svn://svn.ffmpeg.org/ffmpeg/trunk

37fbfd0a 02/10/2002 01:56 AM Juanjo

- Now the ME is done for the entire picture when enconding, the
DCT/Quantization is done after we have calculated all the MV of the picture.
- This is the preamble for a better bit rate control.

Originally committed as revision 293 to svn://svn.ffmpeg.org/ffmpeg/trunk

81401c1f 02/09/2002 04:59 PM Juanjo

- Fixes on RTP and GOB headers for H.263.
- RTP callback system implemented for H.263/H.263+.
- Bug fix on DC coefficients of H.263.
- H.263 decoder now returns PTS on picture number.

Originally committed as revision 292 to svn://svn.ffmpeg.org/ffmpeg/trunk

80e103d0 02/09/2002 01:23 AM Arpi

PATCH by Rik Snel <>

this patch enhances the jpeg header writer. It can be asked to omit
quantisation and huffman tables and it can write different horizontal and
vertical sampling factors. (the last thing is useless for libavcodec
itself (because libavcodec only handles YUV420P at ecoder level), but the...

2f349de2 01/27/2002 01:30 PM Michael Niedermayer

(commit by michael)
mmx & mmx2 quantizer
c dct permutation bugfix
dont copy input on intra only encodings if it can be avoided
dont draw edges on intra only stuff

Originally committed as revision 281 to svn://svn.ffmpeg.org/ffmpeg/trunk

ae40484c 01/15/2002 10:22 PM Michael Niedermayer

(commit by michael)
bye bye weird al rounding bug ;)

Originally committed as revision 268 to svn://svn.ffmpeg.org/ffmpeg/trunk

bff6ecaa 01/10/2002 12:53 AM Michael Niedermayer

AC table reset (memset) optimization - patch by Michael Niedermayer <>

Originally committed as revision 251 to svn://svn.ffmpeg.org/ffmpeg/trunk

644d98a4 11/19/2001 02:13 AM Juanjo

- Preliminary RTP friendly mode for H.263.
- GOB headers for H.263 coding on RTP mode.
- Improved GOB header detection for H.263 decoder.

Originally committed as revision 222 to svn://svn.ffmpeg.org/ffmpeg/trunk

102d3908 11/12/2001 05:19 AM Juanjo

- Fixed a bug on H.263 MV prediction for MB on GOBs limits.
- Now we can decode H.263v1 streams found on QT without problems.

Originally committed as revision 214 to svn://svn.ffmpeg.org/ffmpeg/trunk

a822a479 11/10/2001 02:36 PM Nick Kurshev

fixed gcc-3.0.x compilation (by Michael Niedermayer)

Originally committed as revision 211 to svn://svn.ffmpeg.org/ffmpeg/trunk

544286b3 08/31/2001 06:21 AM Juanjo

Moved some H.263+ variables to MpegEncContext to be thread-safe.
Increase video_buffer on ffmpeg to avoid buffer overrun on big pictures.

Originally committed as revision 114 to svn://svn.ffmpeg.org/ffmpeg/trunk

58f26ba9 08/15/2001 01:12 PM Fabrice Bellard

changed opendivx to mpeg4

Originally committed as revision 102 to svn://svn.ffmpeg.org/ffmpeg/trunk

1a565432 08/13/2001 09:48 PM Fabrice Bellard

win32 fixes

Originally committed as revision 84 to svn://svn.ffmpeg.org/ffmpeg/trunk

3c054a1c 08/07/2001 10:49 PM Fabrice Bellard

fixed scan protos

Originally committed as revision 52 to svn://svn.ffmpeg.org/ffmpeg/trunk

4af7bcc1 08/03/2001 06:33 PM Arpi

MMX/MMXEXT iDCT support, using external functions currently defined in libmpeg2
Gives average 13-20% mpeg decoding speedup on x86 systems.

Originally committed as revision 30 to svn://svn.ffmpeg.org/ffmpeg/trunk

21af69f7 07/30/2001 11:26 PM Fabrice Bellard

use block[] in structure to have it aligned on 8 bytes for mmx optimizations - dct_unquantize is always a function pointer - added specialized dct_unquantize_h263

Originally committed as revision 22 to svn://svn.ffmpeg.org/ffmpeg/trunk

3bb4e23a 07/24/2001 08:43 PM Fabrice Bellard

added skip macroblock optimization (big perf win on black regions for example)

Originally committed as revision 13 to svn://svn.ffmpeg.org/ffmpeg/trunk

de6d9b64 07/22/2001 02:18 PM Fabrice Bellard

Initial revision

Originally committed as revision 5 to svn://svn.ffmpeg.org/ffmpeg/trunk