[Cin] Hardware acceleration methods

The CinGG manual mentions VAAPI and VDPAU. https://cinelerra-gg.org/download/CinelerraGG_Manual/Hardware_video_accelera... https://cinelerra-gg.org/download/CinelerraGG_Manual/GPU_hardware_encoding.h... My prebuild system FFmpeg lists ffmpeg -hide_banner -hwaccels Hardware acceleration methods: vdpau cuda vaapi qsv drm vulkan Among these, Vulkan has recently been discussed here. Is there something that prevent typical QSV to be prebuilt in the CinGG/FFmpeg rpm? References: Compiling FFmpeg with QSV on Linux Intel Platform: https://www.intel.com/content/www/us/en/content-details/728030/building-ffmp... Arc: Intel QuickSync (QSV): https://wiki.archlinux.org/title/FFmpeg#Intel_QuickSync_(QSV) refer