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Commit Graph

127 Commits

Author SHA1 Message Date
Michael Niedermayer
dd7e46e7c3 new I/P frame selection heuristic
PSNR/bitrate is slightly better for my (short) test videos
more tests welcome ...

Originally committed as revision 6876 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-11-02 23:36:39 +00:00
Michael Niedermayer
95da34cd54 CANDIDATE_MB_TYPE_INTER heuristic doesnt work at really low quality where the distortion becomes less relevant then the overhead of intra blocks
Originally committed as revision 6829 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-10-28 20:00:05 +00:00
Diego Biurrun
c26abfa541 Rename ABS macro to FFABS.
Originally committed as revision 6666 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-10-11 23:17:58 +00:00
Diego Biurrun
b78e7197a8 Change license headers to say 'FFmpeg' instead of 'this program/this library'
and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-10-07 15:30:46 +00:00
Marco Manfredini
8226ecaa6c Fix CHECK_BIDIR macro so it works with Intel's Compiler
Patch by Marco Manfredini  mldb A gmx P net

Originally committed as revision 5989 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-08-12 16:31:17 +00:00
Michael Niedermayer
8437ff75f8 asserts to check if assumed conditions really are true
Originally committed as revision 5143 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-03-10 22:00:36 +00:00
Steve L'Homme
267f7edcd1 (f)printf --> av_log conversion
taken from a patch by Steve L'Homme

Originally committed as revision 5127 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-03-08 11:43:10 +00:00
Corey Hickey
39a64e3023 sc_factor support for encoding.
Here's the description I'll add to the mplayer man page:
---
Causes frames with higher quantizers to be more likely to trigger a
scene change detection and make libavcodec use an I-frame (default: 1).
1-16 is a sane range.
Values between 2 and 6 may yield increasing PSNR (up to approximately
0.04 dB) and better placement of I-frames in high-motion scenes.
Higher values than 6 may give very slightly better PSNR (approximately
0.01 dB more than sc_factor=6), but noticably worse visual quality.
---

Original idea from Michael; patch by me.

Originally committed as revision 4883 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-01-22 20:54:52 +00:00
Diego Biurrun
5509bffa88 Update licensing information: The FSF changed postal address.
Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-01-12 22:43:26 +00:00
Loren Merritt
8bf755d4ff 10l: bidir_refine didn't save the new mvs. also improve speed.
Originally committed as revision 4832 to svn://svn.ffmpeg.org/ffmpeg/trunk
2006-01-09 02:08:12 +00:00
Michael Niedermayer
aaaa6f1549 dont discard least significant bits
Originally committed as revision 4773 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-25 16:34:12 +00:00
Michael Niedermayer
aacb6acc8a hmm did i mess the scaling of these up at some point?
anyway, this change decreases bitrate and increase PSNR by ~1.00 on my test file, other files also benefit significantly

Originally committed as revision 4771 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-24 23:47:29 +00:00
Michael Niedermayer
d4f0c2fcc3 10l (segfault fix)
Originally committed as revision 4769 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-23 19:05:48 +00:00
Michael Niedermayer
316a2ec84c bidir refine support
Originally committed as revision 4768 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-23 16:25:00 +00:00
Michael Niedermayer
377798d6bd minor typo
Originally committed as revision 4767 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-23 00:40:52 +00:00
Diego Biurrun
bb270c0896 COSMETICS: tabs --> spaces, some prettyprinting
Originally committed as revision 4764 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-22 01:10:11 +00:00
Diego Biurrun
115329f160 COSMETICS: Remove all trailing whitespace.
Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-12-17 18:14:38 +00:00
Michael Niedermayer
95ae72b7e0 Compilation fixes part 1 patch by (Arvind R. and Burkhard Plaum, plaum, ipf uni-stuttgart de)
Originally committed as revision 4540 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-08-26 19:05:44 +00:00
Måns Rullgård
bf4e3bd2d0 kill a bunch of compiler warnings
Originally committed as revision 4522 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-08-14 15:42:40 +00:00
Michael Niedermayer
0cc64d3d1c fix assertion failure for mpeg2 encoding
Originally committed as revision 4488 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-08-01 20:01:41 +00:00
Michael Niedermayer
2f300f8965 motion vector limit for mpeg2
Originally committed as revision 4482 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-07-27 13:16:35 +00:00
Diego Biurrun
bb628dae44 spelling fixes
patch by Peter Robinson pbrobinson @ at @ gmail . dot . com and myself

Originally committed as revision 4382 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-06-17 15:02:53 +00:00
Michael Niedermayer
725de25c4c fix segfault with 'ffmpeg -i 1.avi -cmp 257 -4mv 2.avi'
Originally committed as revision 4178 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-05-05 13:40:28 +00:00
Mike Melanson
160d679c07 Ministry of English Composition, reporting for duty (and the word is "skipped", not "skiped"; "skiped" would rhyme with "hyped")
Originally committed as revision 4153 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-04-24 17:21:11 +00:00
Michael Niedermayer
cec1f05fd7 check mb/me_threshold range, fixes assertion failure
Originally committed as revision 4082 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-03-26 18:10:44 +00:00
Måns Rullgård
88730be651 kill warnings patch by (Måns Rullgård <mru inprovide com>)
Originally committed as revision 3977 to svn://svn.ffmpeg.org/ffmpeg/trunk
2005-02-24 19:08:50 +00:00
Michael Niedermayer
096c3b7e90 overflow fix
Originally committed as revision 3685 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-11-16 13:40:56 +00:00
Michael Niedermayer
1c3990dbba H.261 encoder by (Maarten Daniels <maarten dot daniels at luc dot ac dot be>)
Originally committed as revision 3643 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-10-28 10:12:57 +00:00
Michael Niedermayer
7494cac0fd fix constrained parameters flag
Originally committed as revision 3609 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-10-18 23:07:18 +00:00
Michael Niedermayer
155ec6edf8 quad tree based motion compensation (currently only 16x16 & 8x8 OBMC blocks, but can be extended to other block sizes easily)
different intra block coding (previous was just an ugly hack)
1.8% bitrate reduction -0.01PSNR (foreman@352x288 qscale=8)
1.5% bitrate reduction +0.05PSNR (foreman@352x288 qscale=1)

Originally committed as revision 3416 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-08-26 20:04:54 +00:00
Michael Niedermayer
26efc54e4a 4x4 SSE compare function
wavelet based compare functions
make epzs_motion_search() more flexible so it can be used for a wider range of block sizes
make get_penalty_factor() independant of MpegEncContext

Originally committed as revision 3410 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-08-22 17:16:03 +00:00
Michael Niedermayer
dbc56b3914 chroma me fix
Originally committed as revision 3216 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-06-11 21:12:46 +00:00
Michael Niedermayer
ae1dbde1cf clip input motion vectors
be somewhat more tollerant on invalid input
return INT_MAX instead of -1 for unuseable mv/mb types as that ensures nicely that they arent used
initalize limits earlier for b frames
a few more asserts to check for out of picture vectors

Originally committed as revision 3213 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-06-10 22:56:43 +00:00
Michael Niedermayer
d4c5d2adf3 nsse weight
Originally committed as revision 3205 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-06-07 17:30:02 +00:00
Michael Niedermayer
e6a2ac3474 noise preserving sum of squares comparission function
Originally committed as revision 3204 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-06-07 03:23:31 +00:00
Michael Niedermayer
0e9d4a67f4 change qscale -> lambda for the motion estimation
finetune bit/distortion weighting factor used in motion estimation, the old coeffs where finetuned relative to incorrect mv_penalty tables which where then fixed later but the coeffs where not
this _may_ fix the long standing blocking artifacts, but may also introduce mudding artefacts theoretically, so please tell us if u stumble across any so we can either fix them or export this variable so the user can change it

Originally committed as revision 3189 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-06-03 19:29:47 +00:00
Michael Niedermayer
1f202b0d46 moving motion estimation specific variables from MpegEncContext -> MotionEstContext
Originally committed as revision 3124 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-05-11 01:38:46 +00:00
Michael Niedermayer
af4091f194 reduce dependancy between motion estimation and MpegEncContext
this is practically just a s/s->me./c->/

Originally committed as revision 3123 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-05-11 00:58:08 +00:00
Michael Niedermayer
1545aceaaf dont missuse assert()
Originally committed as revision 3096 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-30 18:09:24 +00:00
Michael Niedermayer
f20f8a8b0b support reusing mb types and field select values of the source file, but use motion vectors just as additional predictors
minor cleanup
segfault fix

Originally committed as revision 3060 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-25 02:09:47 +00:00
Michael Niedermayer
aacc6615f8 sanity checks
Originally committed as revision 3052 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-24 03:43:43 +00:00
Michael Niedermayer
9964df63ee minor motion estimation cleanup
4mv motion vector passthrough

Originally committed as revision 3051 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-24 03:36:37 +00:00
Michael Niedermayer
f4f3223ffd reuse motion vectors/mb types/field select values of the source video, if the SSE for a macroblock which is predicted with these values is below me_threshold
currently works only with mpeg1/2 source or some luck
may need -sync 0 as otherwise framedrops could lead to extreemly long b frame sequences

Originally committed as revision 3042 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-23 19:06:30 +00:00
Michael Niedermayer
2750b827b3 motion estimation cleanup
replace ugly macros by always_inline functions, that way its much more readable and flexible as always_inline can simply be removed while the macros couldnt be
about 0.5 % speedup with default parameters

Originally committed as revision 3037 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-22 03:31:29 +00:00
Michael Niedermayer
137c8468e8 unify table indexing (motion_val,dc_val,ac_val,coded_block changed)
minor +-1 bugfix

Originally committed as revision 3016 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-04-16 01:01:45 +00:00
Falk Hüffner
7906085fcc warning patrol
Originally committed as revision 2925 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-03-24 23:32:48 +00:00
Michael Niedermayer
9c3d33d67f multithreaded/SMP motion estimation
multithreaded/SMP encoding for MPEG1/MPEG2/MPEG4/H263
all pthread specific code is in pthread.c
to try it, run configure --enable-pthreads and ffmpeg ... -threads <num>
the internal thread API is a simple AVCodecContext.execute() callback which executes a given function pointer with different arguments and returns after finishing all, that way no mutexes or other thread-mess is needed outside pthread.c

Originally committed as revision 2772 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-02-13 17:54:10 +00:00
Michael Niedermayer
5a60360712 4mv + b frame encoding segfault fix
Originally committed as revision 2728 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-01-28 00:36:58 +00:00
Michael Niedermayer
237da0fa20 dont calculate stuff if its not used ...
Originally committed as revision 2699 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-01-14 02:35:04 +00:00
Michael Niedermayer
a75b43fd73 fixing twice added offset bug, was triggered by 4mv + sub_cmp != mb_cmp
bug was introduced in version 1.75 (2003-12-30)
this may have lead to a small drop in quality of the 4mv mode, but should have only affected the mbd=0 case

Originally committed as revision 2698 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-01-14 02:21:39 +00:00