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Rostislav Pehlivanov 3228ac730c vc2enc_dwt: pad the temporary buffer by the slice size 
Since non-Haar wavelets need to look into pixels outside the frame, we
need to pad the buffer. The old factor of two seemed to be a workaround
that fact and only padded to the left and bottom. This correctly pads
by the slice size and as such reduces memory usage and potential
exploits.
Reported by Liu Bingchang.

Ideally, there should be no temporary buffer but the encoder is designed
to deinterleave the coefficients into the classical wavelet structure
with the lower frequency values in the top left corner.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
2017-11-09 00:05:48 +00:00
compat compat/w32dlfcn: add missing config.h include 2017-11-07 16:50:26 -03:00
doc avfilter:vf_libvmaf: improve docs. 2017-11-06 07:50:34 -05:00
ffbuild Merge commit '857e26b655a769e5a56bada1a0d9adb44cc176b7' 2017-11-06 17:57:53 -03:00
fftools ffplay: use SDL2 audio API 2017-11-06 00:00:38 +01:00
libavcodec vc2enc_dwt: pad the temporary buffer by the slice size 2017-11-09 00:05:48 +00:00
libavdevice avdevice/libndi_newtek_dec: remove extra bracket 2017-10-30 11:48:14 -03:00
libavfilter lavfi/scale2ref: Set output frame rate to main input frame rate. 2017-11-08 22:50:05 +01:00
libavformat avformat/ty: fix format specifiers in debug log messages 2017-11-08 17:04:42 -03:00
libavresample Merge commit '07a2b155949eb267cdfc7805f42c7b3375f9c7c5' 2017-10-21 14:57:53 -03:00
libavutil avutil/hwcontext_d3d11va: Fix leak when wrapping texture in AVD3D11FrameDescriptor 2017-11-07 22:56:43 -03:00
libpostproc postproc: Drop deprecated qp typedef 2017-10-22 00:35:23 -03:00
libswresample lswr/rematrix: Support s32p. 2017-11-01 01:04:43 +01:00
libswscale Merge commit '0fd0d4fd0a518e30ff23972828ad7cf7f35cfb9d' 2017-10-30 12:34:40 -03:00
presets
tests checkasm/llviddsp: fix warnings about mixed declaration and code 2017-11-08 14:54:15 -03:00
tools tools/target_dec_fuzzer: Fix build after AV_CODEC_CAP_HWACCEL_VDPAU was removed 2017-10-25 21:50:37 +02:00
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.gitignore build: add support for building .cu files via nvcc 2017-05-15 11:46:50 +02:00
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Changelog Merge commit '2fd6e7d077f590e4d7195356f9baeb271f8b9ae2' 2017-11-08 13:45:09 -03:00
configure configure: add missing avutil deps for hwcontext modules 2017-11-08 19:32:26 -03:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
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LICENSE.md Merge commit '4fef648d10bf3bcfd4b8fa5755c1128966a2427c' 2017-03-15 22:07:47 +01:00
MAINTAINERS Maintainers : add myself for exr 2017-11-05 22:13:12 +01:00
Makefile Merge commit 'd1d6230ea3dd2c34bcd121f958706f3177f8d8c5' 2017-10-11 18:37:56 -03:00
README.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
RELEASE RELEASE: update for git after 3.4 branchpoint 2017-10-11 02:46:23 +02:00

README.md

FFmpeg README

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

Libraries

  • 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.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • ffserver is a multimedia streaming server for live broadcasts.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

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

Examples

Coding examples are available in the doc/examples directory.

License

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

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.