FFMPEG 6.1 released (no idea if important or useful for SVP)

Thought the creator of SVP or others here might be interested to poke at it.  This part stuck out for me...

We strongly recommend users, distributors, and system integrators to upgrade unless they use current git master.

https://ffmpeg.org/index.html#pr6.1

"November 10th, 2023, FFmpeg 6.1 "Heaviside"
FFmpeg 6.1 "Heaviside", a new major release, is now available! Some of the highlights:

libaribcaption decoder
Playdate video decoder and demuxer
Extend VAAPI support for libva-win32 on Windows
afireqsrc audio source filter
arls filter
ffmpeg CLI new option: -readrate_initial_burst
zoneplate video source filter
command support in the setpts and asetpts filters
Vulkan decode hwaccel, supporting H264, HEVC and AV1
color_vulkan filter
bwdif_vulkan filter
nlmeans_vulkan filter
RivaTuner video decoder
xfade_vulkan filter
vMix video decoder
Essential Video Coding parser, muxer and demuxer
Essential Video Coding frame merge bsf
bwdif_cuda filter
Microsoft RLE video encoder
Raw AC-4 muxer and demuxer
Raw VVC bitstream parser, muxer and demuxer
Bitstream filter for editing metadata in VVC streams
Bitstream filter for converting VVC from MP4 to Annex B
scale_vt filter for videotoolbox
transpose_vt filter for videotoolbox
support for the P_SKIP hinting to speed up libx264 encoding
Support HEVC,VP9,AV1 codec in enhanced flv format
apsnr and asisdr audio filters
OSQ demuxer and decoder
Support HEVC,VP9,AV1 codec fourcclist in enhanced rtmp protocol
CRI USM demuxer
ffmpeg CLI '-top' option deprecated in favor of the setfield filter
VAAPI AV1 encoder
ffprobe XML output schema changed to account for multiple variable-fields elements within the same parent element
ffprobe -output_format option added as an alias of -of
This release had been overdue for at least half a year, but due to constant activity in the repository, had to be delayed, and we were finally able to branch off the release recently, before some of the large changes scheduled for 7.0 were merged.

Internally, we have had a number of changes too. The FFT, MDCT, DCT and DST implementation used for codecs and filters has been fully replaced with the faster libavutil/tx (full article about it coming soon).
This also led to a reduction in the the size of the compiled binary, which can be noticeable in small builds.
There was a very large reduction in the total amount of allocations being done on each frame throughout video decoders, reducing overhead.
RISC-V optimizations for many parts of our DSP code have been merged, with mainly the large decoders being left.
There was an effort to improve the correctness of timestamps and frame durations of each packet, increasing the accurracy of variable frame rate video.

Next major release will be version 7.0, scheduled to be released in February. We will attempt to better stick to the new release schedule we announced at the start of this year.

We strongly recommend users, distributors, and system integrators to upgrade unless they use current git master."