[FFmpeg-user] Error messages when generating ProRes from 16-Bit TIFF

[Edward Park]

Hi,

I only have a generic suggestion to offer; as always, try updating to the current code, or a nightly build.
> Log:
> 
> ffmpeg started on 2020-09-10 at 14:21:31
> Report written to "ffmpeg-20200910-142131.log"
> Log level: 48
> Command line:
> "C:\\Temp\\ffmpeg\\bin\\ffmpeg.exe" -report -i "D:\\Artus\\tif\\0%05d.tif" -c:v prores_ks -profile:v 4444 -vf "scale=2048x1550" -pix_fmt yuv444p10le neu.mov
> ffmpeg version git-2020-06-15-9d80f3e Copyright (c) 2000-2020 the FFmpeg developers
>  built with gcc 9.3.1 (GCC) 20200523
>  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
I was curious about a few things though, why might someone add "--disable-w32threads"? Can you use posix threads instead?

Also, is 2048x1550 not a typo? (1550 doesn't factor very well, 2×25×31)
I can't articulate a clear rationale for this (and so it might not be optimal) but I would personally convert formats then change the size, putting the format filter before scale instead of pix_fmt. Or more likely I wouldn't even think of that and expect ffmpeg to figure that part out for me.
> [AVIOContext @ 00000219ad3f0c40] Statistics: 146089658 bytes read, 0 seeks
> [tiff @ 00000219ad19ea80] compression: 1
> frame=    0 fps=0.0 q=0.0 size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A
> cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
Again, not sure what it means if anything at all, but the time looks like it rolled over.

Regards,
Ted Park