using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 output.mp4įfmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developersīuilt with Apple clang version 12.0.0 (clang-1200.0.32.28)Ĭonfiguration: -prefix=/usr/local/Cellar/ffmpeg/4.3.1_9 -enable-shared -enable-pthreads -enable-version3 -enable-avresample -cc=clang -host-cflags= -host-ldflags= -enable-ffplay -enable-gnutls -enable-gpl -enable-libaom -enable-libbluray -enable-libdav1d -enable-libmp3lame -enable-libopus -enable-librav1e -enable-librubberband -enable-libsnappy -enable-libsrt -enable-libtesseract -enable-libtheora -enable-libvidstab -enable-libvorbis -enable-libvpx -enable-libwebp -enable-libx264 -enable-libx265 -enable-libxml2 -enable-libxvid -enable-lzma -enable-libfontconfig -enable-libfreetype -enable-frei0r -enable-libass -enable-libopencore-amrnb -enable-libopencore-amrwb -enable-libopenjpeg -enable-librtmp -enable-libspeex -enable-libsoxr -enable-videotoolbox -enable-libzmq -enable-libzimg -disable-libjack -disable-indev=jack What made ffmpeg change colors only for these two videos? If it made similar changes for the rest of the videos as well, how to predict this behaviour before hand?
Is there any way I can prevent changes like these happening? Probably some flag on saturation, brightness, contrast or any other parameter.Notice the colors red and green in the image (even the skin color and hair color were changed). NOTE: The one on the right is a frame from the original video and the frame on the left is the one from the processed (down scaled) video.
Below I have attached a comparison from the one which was impacted the most. Out of 10 sample videos, 2 of the them suffered impact on colors.
I have a use case where I need to downscale a 716x1280 mp4 video to 358圆40 (half of the original).
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