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ppc: linux: Check altivec using the auxv

Should prevent trying to use altivec when it is disabled by the kernel.
latest commit a0368baa60
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compat w32pthreads: use the condition variable API directly when targeting n…
doc lavc: add profile define for DTS Express
libavcodec h264: disable ER by default
libavdevice xcbgrab: Check av_strdup() allocation
libavfilter avfilter: Document avfilter_graph_alloc return value
libavformat mpegtsenc: Take max_delay into account when buffering multiple audio …
libavresample libavresample: NEON optimized FIR audio resampling
libavutil ppc: linux: Check altivec using the auxv
libswscale swscale: Check memory allocation
presets presets: spelling error in libvpx 1080p50_60
tests FATE: add a test for parameter changes in HEVC
tools ismindex: Calculate the pts duration of trun atoms, not the dts duration
.gitattributes Treat all '*.pnm' files as non-text file
.gitignore Ignore generated file tools/sidxindex.
COPYING.GPLv3 Add configure option to upgrade (L)GPL to version 3.
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file.
COPYING.LGPLv3 Add configure option to upgrade (L)GPL to version 3.
CREDITS partially rename FFmpeg to Libav
Changelog lavc: add libdcadec decoder
INSTALL doc: clarify configure features
LICENSE license: Mention that vf_interlace is GPL, not LGPL
Makefile configure: add support for neon intrinsics
README doc: Add more information in the README doc: Add more information in the README
RELEASE Make the RELEASE file match with the most recent tag
arch.mak aarch64: add armv8 CPU flag
avconv.c avconv: do not overwrite the stream codec context for streamcopy
avconv.h avconv: do not use the stream codec context for encoding
avconv_dxva2.c avconv_dxva2: add hevc support
avconv_filter.c avconv: fix leak in filter error
avconv_opt.c avconv: Check rc_override memory allocation
avconv_vda.c avconv: Support VDA hwaccel
avconv_vdpau.c avconv_vdpau: allocate video surface of VDPAU-specified size
avplay.c avplay: Check memory allocation
avprobe.c avprobe: Export coded_{width,height} in -show_streams
cmdutils.c cmdutils: Add a stream specifier to map usable streams
cmdutils.h cmdutils: Mark exit_program as av_noreturn
cmdutils_common_opts.h avplay: Accept cpuflags option
common.mak build: export library dependencies in ${name}_FFLIBS
configure build: Split JPEG-related tables off into a separate component
library.mak build: Support executable only ldflags Drop git- prefix from version labels


Libav is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.


  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libavresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.


  • avconv is a command line toolbox to manipulate, convert and stream multimedia content.
  • avplay is a minimalistic multimedia player.
  • avprobe is a simple analisys tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.


The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.


Conding examples are available in the doc/example directory.


Libav codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

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