gx
6ee2f474c7
Layout templates (9): - single, dual_horizontal, dual_vertical - quad (default), main_plus_preview (1 big + 3 small) - six_grid (3x2), nine_grid (3x3), sixteen_grid (4x4) - panoramic Cells определены в normalized координатах (0.0-1.0), переводятся в pixels в config_output (× out_w/out_h). Alignment до chroma boundary (NV12 ÷ 2). Filter options: - layout=<name> (default quad) - out_w=<int> (default 1920) - out_h=<int> (default 1080) Dynamic inputs: - nb_inputs derived из layout (single=1, quad=4, nine_grid=9, sixteen_grid=16) - ff_append_inpad_free_name в init() для каждой cell - AVFILTER_FLAG_DYNAMIC_INPUTS на filter Phase 2a limitation: - Каждый input должен быть точно cell_px size (no scaling). - Phase 2b добавит NPP resize для mixed-size inputs.
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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.
- Additional small tools such as
aviocat,ismindexandqt-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.