x264 Video Codec- Lastest

juli13 · Mar 4, 2009

x264 Video Codec description

A free library for encoding H264/AVC video streams

Note: x264 is still considered alpha, so errors can (and will) occur!

Here are some key features of "x264 Video Codec":

· CAVLC/CABAC
· Multi-references
· Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions)
· Inter P: all partitions (from 16x16 down to 4x4)
· Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
· Ratecontrol: optional VBV, single or multipass ABR, constant quantizer
· Scene cut detection
· Adaptive B-frame placement
· B-frames as references / arbitrary frame order
· 8x8 and 4x4 adaptive spatial transform
· Lossless mode
· Custom quantization matrices
· Parallel encoding of multiple slices
· Interlacing

What's New in This Release: [ read full changelog ]

· Remove pre-scenecut from fprofile commands as well
· Also add psy-trellis to fprofile

juli13 · Mar 7, 2009

x264 Video Codec r1123

x264 Video Codec r1123
07.03.2009

Code:

A free library for encoding H264/AVC video streams

The code is written from scratch by Laurent Aimar, Loren Merritt, Eric Petit(OS X), Min Chen (vfw/asm), Justin Clay(vfw), M�ns Rullg�rd, Christian Heine (asm), and Alex Izvorski (asm).

Note: x264 is still considered alpha, so errors can (and will) occur! 

Here are some key features of "x264 Video Codec":

· CAVLC/CABAC
· Multi-references
· Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions)
· Inter P: all partitions (from 16x16 down to 4x4)
· Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
· Ratecontrol: optional VBV, single or multipass ABR, constant quantizer
· Scene cut detection
· Adaptive B-frame placement
· B-frames as references / arbitrary frame order
· 8x8 and 4x4 adaptive spatial transform
· Lossless mode
· Custom quantization matrices
· Parallel encoding of multiple slices
· Interlacing

What's New in This Release:

· Update some asm copyright headers

juli13 · Mar 8, 2009

x264 Video Codec r1125

x264 Video Codec r1125
08.03.2009

What's New in This Release:

· Faster SSE2 pixel_var
· Optimized using the DEINTB method from r1122. ~32% faster var_16x16 on Conroe.

josagi · Mar 11, 2009

x264 Video Codec r1127

What's New in This Release

· Faster integral_init
· palignr to avoid unaligned loads is worth it in inith, but not initv.

juli13 · Mar 11, 2009

x264 Video Codec r1127

Code:

A free library for encoding H264/AVC video streams

The code is written from scratch by Laurent Aimar, Loren Merritt, Eric Petit(OS X), Min Chen (vfw/asm), Justin Clay(vfw), M�ns Rullg�rd, Christian Heine (asm), and Alex Izvorski (asm).

Note: x264 is still considered alpha, so errors can (and will) occur!

Here are some key features of "x264 Video Codec":

· CAVLC/CABAC
· Multi-references
· Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions)
· Inter P: all partitions (from 16x16 down to 4x4)
· Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
· Ratecontrol: optional VBV, single or multipass ABR, constant quantizer
· Scene cut detection
· Adaptive B-frame placement
· B-frames as references / arbitrary frame order
· 8x8 and 4x4 adaptive spatial transform
· Lossless mode
· Custom quantization matrices
· Parallel encoding of multiple slices
· Interlacing

the first x32 chip [EXE]
the second x64 chip [EXE]

What's New in This Release:

· Faster integral_init
· palignr to avoid unaligned loads is worth it in inith, but not initv.

juli13 · Mar 18, 2009

x264 Video Codec r1128

x264 Video Codec r1128

Code:

Here are some key features of "x264 Video Codec":

· CAVLC/CABAC
· Multi-references
· Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions)
· Inter P: all partitions (from 16x16 down to 4x4)
· Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
· Ratecontrol: optional VBV, single or multipass ABR, constant quantizer
· Scene cut detection
· Adaptive B-frame placement
· B-frames as references / arbitrary frame order
· 8x8 and 4x4 adaptive spatial transform
· Lossless mode
· Custom quantization matrices
· Parallel encoding of multiple slices
· Interlacing

What's New in This Release:

· SSE2 zigzag_interleave
· Replace PHADD with FastShuffle (more accurate naming).
· This flag represents asm functions that rely on fast SSE2 shuffle units, and thus are only faster on Phenom, Nehalem, and Penryn CPUs.

juli13 · Mar 19, 2009

x264 Video Codec r1129

Code:

the first x32 chip [EXE]
the second x64 chip [EXE]

What's New in This Release:

· Add missing "static" qualifier to two arrays
· Should slightly improve performance.

tani1 · Mar 27, 2009

for x264 Video Codec r1130

Note: x264 is still considered alpha, so errors can (and will) occur!

Here are some key features of "x264 Video Codec":

· CAVLC/CABAC
· Multi-references
· Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions)
· Inter P: all partitions (from 16x16 down to 4x4)
· Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
· Ratecontrol: optional VBV, single or multipass ABR, constant quantizer
· Scene cut detection
· Adaptive B-frame placement
· B-frames as references / arbitrary frame order
· 8x8 and 4x4 adaptive spatial transform
· Lossless mode
· Custom quantization matrices
· Parallel encoding of multiple slices
· Interlacing

What's New in This Release:
· Faster probe_skip
· Add a second chroma threshold after the DC transform.

juli13 · Mar 31, 2009

x264 Video Codec r1134

Code:

the first x32 chip [EXE]
the second x64 chip [EXE]

What's New in This Release:

latest changes:
- intra_sad_x3_8x8 assembly

josagi · Apr 4, 2009

x264 Video Codec r1136

What´s new in this release?
- Activate intra_sad_x3_8x8c in lookahead

juli13 · Apr 5, 2009

x264 Video Codec r1136 for chip 64

What´s new in this release?
- Activate intra_sad_x3_8x8c in lookahead

juli13 · Apr 7, 2009

x264 Video Codec r1137 for chip 32

latest changes:
- Faster CABAC RDO
Since the bypass case is quite unlikely, especially when doing merged sigmap/level coding,
it's faster to use a branch than a cmov.

juli13 · Apr 7, 2009

x264 Video Codec r1137 for chip x64

latest changes:
- Faster CABAC RDO
Since the bypass case is quite unlikely, especially when doing merged sigmap/level coding,
it's faster to use a branch than a cmov.

juli13 · Apr 9, 2009

x264 Video Codec r1139 for chip x32

latest changes:
- Various CABAC optimizations
Move calculation of b_intra out of the core residual loop and hardcode it where applicable.
Inlining cabac_mb_mvd was unnecessary and wasted tremendous amounts of code size. Inlining only cache_mvd is faster and significantly smaller.

juli13 · Apr 10, 2009

x264 Video Codec r1139 for chip x64

latest changes:
- Various CABAC optimizations
Move calculation of b_intra out of the core residual loop and hardcode it where applicable.
Inlining cabac_mb_mvd was unnecessary and wasted tremendous amounts of code size. Inlining only cache_mvd is faster and significantly smaller.

juli13 · Apr 15, 2009

15.04.2009
x264 Video Codec r1140 for chip x34

latest changes:
- Slightly faster SSE4 SA8D, SSE4 Hadamard_AC, SSE2 SSIM
shufps is the most underrated SSE instruction on x86.

juli13 · Apr 15, 2009

15.04.2009
x264 Video Codec r1140 for chip x64

latest changes:
- Slightly faster SSE4 SA8D, SSE4 Hadamard_AC, SSE2 SSIM
shufps is the most underrated SSE instruction on x86.

juli13 · Apr 19, 2009

19.04.2009
x264 Video Codec r1143 for chip x32
x264 Video Codec r1143 for chip x64

latest changes:
- Add "coded blocks" stat to output information.
This measures the total percentage of blocks, intra and inter, which have nonzero coefficients.
"y,uvAC,uvDC" refers to luma, chroma DC, and chroma AC blocks.
Note that skip blocks are included in this stat.

juli13 · Apr 21, 2009

21.04.2009
x264 Video Codec r1144 for chip x32

latest changes:
- fix conversions between vectors with differing element types or numbers of subparts errors

juli13 · Apr 22, 2009

22.04.2009
x264 Video Codec r1145 for chip x32
x264 Video Codec r1145 for chip x64

latest changes:
- fix "incompatible types in initialization" compilation issues with GCC 4.3 (which is stricter than previous compiler version)