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 Readme for:  Development » Library » Misc » libx264.lha


Description: H.264/MPEG-4 AVC video compression library
Download: libx264.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 8Mb
Version: r164
Date: 20 Sep 2023
Author: See AUTHORS file
Submitter: Michael Trebilcock
Homepage: http://www.videolan.org/developers/x264.html
Category: development/library/misc
Replaces: development/library/misc/libx264.lha
License: GPL
Distribute: yes
Min OS Version: 4.1
FileID: 12670
Comments: 2
Snapshots: 0
Videos: 0
Downloads: 106  (Current version)
846  (Accumulated)
Votes: 1 (0/0)  (30 days/7 days)

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A third party patch has been applied to fix YUV422 encoding with altivec
instructions enabled

Generic PPC and Altivec builds of the library are included in this archive.


ktadd for testing the altivec build.
Fredrik Wikstrom for previous ports (<128).


x264 is a free software library and application for encoding video streams into
the H.264/MPEG-4 AVC compression format, and is released under the terms of the

Encoder features

    8x8 and 4x4 adaptive spatial transform
    Adaptive B-frame placement
    B-frames as references / arbitrary frame order
    CAVLC/CABAC entropy coding
    Custom quantization matrices
    Intra: all macroblock types (16x16, 8x8, 4x4, and PCM with all predictions)
    Inter P: all partitions (from 16x16 down to 4x4)
    Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
    Interlacing (MBAFF)
    Multiple reference frames
    Ratecontrol: constant quantizer, constant quality, single or multipass ABR,
optional VBV
    Scenecut detection
    Spatial and temporal direct mode in B-frames, adaptive mode selection
    Parallel encoding on multiple CPUs
    Predictive lossless mode
    Psy optimizations for detail retention (adaptive quantization, psy-RD,
    Zones for arbitrarily adjusting bitrate distribution

Copyright © 2004-2024 by Björn Hagström All Rights Reserved