version 3.4:
- deflicker video filter
- doubleweave video filter
- lumakey video filter
- pixscope video filter
- oscilloscope video filter
- config.log and other configuration files moved into ffbuild/ directory
- update cuvid/nvenc headers to Video Codec SDK 8.0.14
- afir audio filter
- scale_cuda CUDA based video scale filter
- librsvg support for svg rasterization
- crossfeed audio filter
- spec compliant VP9 muxing support in MP4
- remove the libnut muxer/demuxer wrappers
- remove the libschroedinger encoder/decoder wrappers
- surround audio filter
- sofalizer filter switched to libmysofa
- Gremlin Digital Video demuxer and decoder
- headphone audio filter
- superequalizer audio filter
- roberts video filter
- The x86 assembler default switched from yasm to nasm, pass
--x86asmexe=yasm to configure to restore the old behavior.
- additional frame format support for Interplay MVE movies
- support for decoding through D3D11VA in ffmpeg
- limiter video filter
- libvmaf video filter