The FFmpeg 4.3 release comes with Vulkan support, Intel QSV-accelerated MJPEG and VP9 decoding, support for the AMD AMF encoder on Linux via the Vulkan API, VDPAU VP9 hardware acceleration, TrueHD and MPEG-H 3D audio support for in MP4, and support for Sipro ACELP.KELVIN decoding. This release also features AV1 encoding support via librav1e, support for the ZeroMQ Message Transport Protocol (ZMTP), support for muxing PCM and PGS in M2TS, expanded styling support for 3GPP Timed Text Subtitle (movtext), and switches from AvxSynth to AviSynth+ on Linux.