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splodge

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Join date
25-Feb-2006
Last activity
28-Feb-2025
Posts
10

Post History

Post
#1630033
Topic
Amadeus - Laserdisc+DVD Audio Tracks for 4K (formerly Theatrical Cut Restoration)
Time

jimbotron235, I’ll be eternally grateful for your work on this edit. Now that the 4k HDR version is available I need to convert it to 1080p SDR for my projector as I don’t believe there is a SDR version available for this release - it certainly doesn’t come on Blu-ray.

I’ve been trying ffmpeg to do automatic HDR to SDR conversion with the following, seems to work well:

ffmpeg -init_hw_device vulkan -i INPUT -map 0✌️0 -map_metadata -1 -vf libplacebo=upscaler=spline36:downscaler=spline36:w=1920:h=-1:peak_detect=true:tonemapping=spline:gamut_mode=perceptual:colorspace=bt709:color_trc=bt709:color_primaries=bt709:range=limited:dithering=blue:format=yuv420p -c:v libx264 -preset slow -crf 18 OUTPUT.mkv

Any tips to improve this?