mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-02-09 14:14:39 +02:00
a5b1e632c9
For vaapi if the init_pool_size is not zero, the pool size is fixed. This means max surfaces is init_pool_size, but when mapping vaapi frame to qsv frame, the init_pool_size < nb_surface. The cause is that vaapi_decode_make_config() config the init_pool_size and it is called twice. The first time is to init frame_context and the second time is to init codec. On the second time the init_pool_size is changed to original value so the init_pool_size is lower than the reall size because pool_size used to initialize frame_context need to plus thread_count and 3 (guarantee 4 base work surfaces). Now add code to make sure init_pool_size is only set once. Now the following commandline works: ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 \ -hwaccel_output_format vaapi -i input.264 \ -vf "hwmap=derive_device=qsv,format=qsv" \ -c:v h264_qsv output.264 Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
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.