Chroma 'static' (junk image) output from ProRes 4444 src

[Former user]

My input is a ProRes 4444 .mov, 3840x2160, 23.976fps

Here's my command line: C:\x265\x265_16bit.exe --input "D:\testfile.mov" --input-depth 10 --input-res 3840x2160 --merange 89 --fps 24000/1001 --vbv-maxrate 10000 --vbv-bufsize 15000 --colorprim bt709 --transfer bt709 --colormatrix bt709 --output "D:\file_10mbps_test.265"

Attached is screenshot of the video output.

This is the same behavior on another 4444 file at resolution 4096x1714, 24fps

Can someone shed some light on the root cause? If you need sample input and output, let me know.

Thanks!

[Sundar Govindarajan]

x265 takes only yuv or y4m files as input.

Please change your input prores video to yuv using ffmpeg using a cli like ffmpeg -i src.mov -pix_fmt yuv444p10le dst.YUV

and use the yuv file as input to x265 command line.

If your video is 4:4:4, then include --input-csp i444 in your CLI