I have problems with slice_v: RADV_PERFTEST=video_decode,video_encode (doesn't work inline with ffmpeg command, don't know why) time -p ffmpeg -init_hw_device vulkan=vulkan -filter_hw_device vulkan -hwaccel vulkan -i hdr_02.mp4 -vf libplacebo=format=yuv444p:w=1920:h=1080:force_original_aspect_ratio=decrease:normalize_sar=true:upscaler=ewa_lanczos:downscaler=ewa_lanczos:colorspace=bt709:color_primaries=bt709:color_trc=bt709:range=tv -c:a copy -c:v ffv1_vulkan -slicecrc 0 -level 4 -strict -2 -async_depth 5 -slices_v 32 -slices_h 32 -f matroska -benchmark /dev/null Unrecognized option 'slices_v'. Error splitting the argument list: Option not found real 0,05 user 0,02 sys 0,01 Eliminating the options slice_ e slice_h ottengo: [vost#0:0 @ 0x593c19344240] Unknown encoder 'ffv1_vulkan' [vost#0:0 @ 0x593c19344240] Error selecting an encoder Error opening output file /dev/null. Error opening output files: Encoder not found bench: maxrss=158204KiB real 0,09 user 0,04 sys 0,01 I guess you have a preset that I don't have? Did you use ffmpeg-git?