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I just ran a test with ffmpeg. Prores had no problems encoding an 8 bit, 960 fps, 7680x4320 video.
ffmpeg -i input.avs -vcodec prores_ks -profile:v hq -quant_mat:v hq -pix_fmt yuv422p10le -vf zscale=matrixin=709:matrix=709:transferin=709:transfer=709:primariesin=709:primaries=709 "output.mov"Code:
General Complete name :output.mov Format : MPEG-4 Format profile : QuickTime Codec ID : qt 0000.02 (qt ) File size : 1.43 GiB Duration : 106 ms Overall bit rate mode : Variable Overall bit rate : 116 Gb/s Writing application : Lavf58.20.100 Video ID : 1 Format : ProRes Format version : Version 0 Format profile : 422 HQ Codec ID : apch Duration : 106 ms Bit rate mode : Variable Bit rate : 117 Gb/s Width : 7 680 pixels Height : 4 320 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 960.000 FPS Color space : YUV Chroma subsampling : 4:2:2 Scan type : Progressive Bits/(Pixel*Frame) : 3.676 Stream size : 1.43 GiB (100%) Writing library : Lavc Language : English Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
wow I did not know Prores went as high as 960 fps - is this the case for all profiles and resolutions? I remember seeing some documentation saying Prores only went to 120fps, so it's great it goes a lot higher.
What about DNxHR? Any idea what the maximum is with that?
I suspect it's ffmpeg which allows you such a high fps, but I guess it's outside of the official spec for the codec?
I would be interested to see if DNxHR could also work with such high frame rates if using ffmpeg. I am away from home at the moment, so can't do any tests. But would be interested to hear if anyone does any experiment with DNxHR
Even if the software you're using doesn't allow for higher frame rates you can always lie to the encoder and tell it the frame rate is lower, then change the frame rate back up in your editor. Ie, tell the encoder your 120 fps video is 60 fps. Then tell your editor the 60 fps video is really 120 fps when you import it.