Since you're losing resolution and doing a transcode, it's never going to look perfectly the same as it did. If a shot needs more bits to be encoded faithfully at that ratefactor, it just increases the bitrates for those frames. The FFmpeg command Using a slow preset will give good compression and a CRF of 19 will keep most of the original video quality. ffmpeg / ffmpegstreach-16-9scale1080ph265mkv.cmd Go to file Go to file T Go to line L Copy path Copy This commit does not belong to any branch on. The speed of the video upscale will depend on the video length, bitrate, your CPU and what settings you use for the upscale process. So you can set that number to wherever you want to make the tradeoff in terms of storage size vs visual quality. How to easily upscale a 1080p video to 4k resolution using FFmpeg and a one-line command. Preset veryslow is telling x264 'take a little extra CPU time to really make sure you're doing a good job optimizing for smaller filesize at the same quality'Ĭrf means 'constant ratefactor' basically a constant quality. You just set one size which is the height in this example and use -1 for the other dimension. Lanczos says to use a specific high quality scaler to go from UHD to HD, you can look at other options here The scale video filter is for resizing the video. Click on the Adjust Nvidia Image Scaling (NIS) on (almost) ANY GAME.

That having been said, you might be happy with ffmpeg -i foo.mkv -vf scale=1920x1080:flags=lanczos -c:v libx264 -preset veryslow -crf 10 -c:a copy bar.mkv Im using an ASUS FX505DY with a Ryzen 5 and RX560X, native resolution is 1080p.

Remux, or remultiplexing, involves changing the container without changing the actual media streams within.

Ffmpeg scale 1080p