9.21

• Speed up Linux AMF encoding with OpenCL filters, by copying filter output to a host surface and submitting it on a dedicated thread.
• On Linux, map and unmap input frames on a dedicated queue so the host does not wait for queued GPU work.
• Fix --vpp-kfm frame count and tail frames varying between runs on ROCm.
• Speed up --vpp-kfm.
• Fix --vpp-kfm aborting when used with --trim.
• Fix accumulated rounding error of TrueHD in --audio-copy. ( rigaya/NVEnc#805 )
• Improve CPU usage readout on Linux.
• Fix raw output dropping frames still queued at shutdown.
• Fix --vpp-rtgmc failing on Mesa rusticl.
• Fix -c raw with no filters failing on VA-API.
• Fix VA-API exiting because not enough frames are allocated when an OpenCL filter such as --vpp-kfm emits multiple frames per input.
• Fix --fallback-bitdepth being ignored on VA-API, so encoding failed on GPUs without 10-bit support.