9.16

• Improve subtitle burn-in for Blu-ray and MPEG-TS inputs. ( #756 )
• Fix libopus encoding for 5.1 / 7.1 channel layouts.

9.15

• Add new denoise filter --vpp-msmooth.
• Add new sharpend filter --vpp-msharpen.
• Add quality metric evaluation using Vship. (--vship-ssimulacra2, --vship-butteraugli, --vship-cvvdp)
• Add sigmoid-related options and input colorspace specification to --vpp-libplacebo-shader.
• Display warning when using --vpp-libplacebo-shader in conditions requiring res specification are detected.
• Minimize latency with --lowlatency.
• Fix subtitles not being passed to vpp-subburn when no audio processing is performed. ( #756 )

9.14

• Add --vmaf support for Linux systems. ( #755 )
• Improve vapoursynth error messages.

9.13

• Improve multi-channel audio channel layout handling when encoding with --audio-codec. ( #671 )
• Update documents for Dolby Vision options (--dolby-vision-profile, --dolby-vision-rpu, etc.). ( #738 )

9.12

• Fix DTS:X (dtsx) track not being transferred by --audio-copy.
• Simplify Linux packages.

9.11

• Add option to append input command line parameters to encoding_tool in muxer metadata. (--muxer-add-cmd)
• Fix potential SIGPIPE(141) error termination in Linux multi-GPU environment.
• Fix error on finalization when encoding E-AC3. ( #706 )
• Avoid mixing GPUs with different B-frame availability when using --parallel.
• Migrate Linux build to meson.
• Linux packages will now not require ffmpeg lib packages as dependencies, and will include ffmpeg 8.0 libs.

9.10

• Add feature to set --audio-bitrate to different value depending on audio channels. ( #743 )

9.09

• Add support for Vapoursynth API V4. ( #747 )

9.08

• Add option to encode only when input audio codec differs from codec specified by --audio-codec. (--audio-encode-other-codec-only, #743)
• Remove restriction on dolby vision output. ( #738 )

9.07

• Fix error when encoding H.264 for RTMP/FLV output.
• Fix mkv output failure when encoding with -c av_libsvtav1. ( #733 )
• Add option to show preset/tune parameters (--check-preset-params). ( #733, #735 )