Doom9's Forum - View Single Post - VDub2 Canopus HQX 16-bit negotiation issue

poisondeathray · 11th April 2021, 22:34

kolak did you use resolve to encode Pr444 or something else ? Did you use that test pattern ? Can you upload the Pr444 output ?

ffmpeg pr444 variant encode results in 4-4091 in 12bit, with the expected gaps at 12bit

If you down convert to 10bit, you get 1-1023, but smooth, basically perfect except for the missing zero value. PSNR y:90.300512

And if you feed native 12bit src, the ffmpeg pr4444 variant is still 4-4091 (and with gaps at 12bpc , not smooth)

11th April 2021, 22:34	#103 \| Link
poisondeathray Registered User Join Date: Sep 2007 Posts: 5,377	kolak did you use resolve to encode Pr444 or something else ? Did you use that test pattern ? Can you upload the Pr444 output ? ffmpeg pr444 variant encode results in 4-4091 in 12bit, with the expected gaps at 12bit If you down convert to 10bit, you get 1-1023, but smooth, basically perfect except for the missing zero value. PSNR y:90.300512 And if you feed native 12bit src, the ffmpeg pr4444 variant is still 4-4091 (and with gaps at 12bpc , not smooth) Last edited by poisondeathray; 11th April 2021 at 22:55.