Objective is to be best quality video at 1080p possible and preserve the soundtrack and PGS stream as is.Īfter much hunting around various forums and LOTS of conversions and tests I think i've got it as good as I can get it PQ wise with my current limited knowledge of ffmpeg / libx264 and errm everything basically.įfmpeg -hide_banner -y -probesize 100M -i "FILE_ONLY_1MIN.hevc" -map 0:v:0 -c:v libx264 -x264-params b_pyramid=2:ref=4:vbv-maxrate=30000:vbv-bufsize=15000 -refs 4 -crf 17 -preset:v veryslow -profile:v high -b_strategy 2 -rc-lookahead 900 -level 4.1 -pix_fmt yuv420p -color_range 1 -colorspace 1 -color_primaries bt709 -color_trc bt709 -subq 10 -vf zscale=tin=smpte2084:min=bt2020nc:pin=bt2020:rin=tv:t=smpte2084:m=bt2020nc:p=bt2020:r=tv,zscale=t=linear,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p,zscale=s=1920x1080 "FILE_ONLY_1MIN.h264" If anyone here has done this sort of thing already and knows a better ffmpeg line to do the job say on the original file without demuxing/remuxing it i'd appreciate it as I am new to ffmpeg. I intend to remux the newly created 1080p layer with the original primary soundtrack layer and PGS stream in tsMuxer and see what I get. I am running the following ffmpeg command (grabbed from a forum online) to convert the UHD HEVC layer to 1080p(rec709).įfmpeg -hide_banner -y -hwaccel "cuda" -i "S03E01_WW.hevc" -map 0:v:0 -c:v "h264_nvenc" -rc "vbr" -b:v "5M" -maxrate "10M" -bufsize "10M" -preset "9" -profile:v "high" -level "0" -pix_fmt yuv420p -color_range "1" -colorspace "1" -color_primaries "1" -color_trc "1" -vf "scale=1920x1080:flags=lanczos+accurate_rnd+full_chroma_int:in_color_matrix=auto:out_color_matrix=bt709:in_range=auto:out_range=limited:out_h_chr_pos=0:out_v_chr_pos=0" -subq "10" -bf 4 -b_ref_mode 2 -b_strategy "2" -refs 4 -rc-lookahead 40 -max_muxing_queue_size 2048 -analyzeduration 10M -probesize 50M -map 0:a? -c:a copy -map 0:s? -c:s copy -map_chapters 0 -map 0:t? "S03E01_WW.h264" I am in the process of converting a bunch of UHD TV show episodes to a format playable on a 1080p system.Ĭurrently I have demuxed a test episode to UHD hevc layer, primary surround soundtrack layer and PGS stream 0 layer.
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