Optimizacija video objekta - primjeri

Početni video: 1920x1080, 24fps, 00:00:10.29, yuv420p
Izvor: Weissdorn-16111-3840×2160.mp4 / adege via Pixabay

h264 mp4:

4923 kb/s; 6300kB

Varijacije:

ffmpeg -i w.mp4 -vf "hue=s=0" -color_range 2 w-bw.mp4

3400 kb/s; 4300kB

ffmpeg -i w.mp4 -f lavfi -i color=gray:s=1920x1080 -f lavfi -i color=black:s=1920x1080 -f lavfi -i color=white:s=1920x1080 -preset veryslow -crf 23 -filter_complex threshold w-bwt_vslow_crf23.mp4

6977 kb/s; 9000kB

ffmpeg -i w.mp4 -f lavfi -i color=gray:s=1920x1080 -f lavfi -i color=black:s=1920x1080 -f lavfi -i color=white:s=1920x1080 -preset veryslow -crf 51 -filter_complex threshold w-bwt_vslow_crf51.mp4

297 kb/s; 383kB

1-bit dither via bpm & h264

(conversion shell script by crash-stop)

crf 23 >

48299 kb/s; 59600kB

crf 1 > crf 51 >

933 kb/s; 1200 kB

FHD > HD1080/16 > FHD

ffmpeg -i w_480x270_crf1-dither_crf1.mp4 -s 1920x1080 -crf 1 w_1920
x1080_crf1-1.mp4

 36754 kb/s; 45368kB

ffmpeg -i w_480x270_crf51-dither_crf1.mp4 -s 1920x1080 -crf 51 w_1920
x1080_crf1-51.mp4

  645 kb/ s; 797kB

vp9 webm:

ffmpeg -i w.mp4 -c:v libvpx-vp9 -an -b:v 1M -pass 1 -f webm /dev/null && ffmpeg -i w.mp4 -c:v libvpx-vp9 -b:v 1M -g 9999 -aq-mode 0 -pass 2 w.webm

1233 kb/s, 1600kB

Varijacije:

ffmpeg -i w-bwt_vslow_crf0.mp4 -c:v libvpx-vp9 -an -b:v 1M -pass 1 -f webm /dev/null && ffmpeg -i w-bwt_vslow_crf0.mp4 -c:v libvpx-vp9 -b:v 1M -g 9999 -aq-mode 0 -pass 2 w-bwt.webm

1445 kb/s, 1900kB

ffmpeg -i w-bwt_vslow_crf23.mp4 -c:v libvpx-vp9 -an -b:v 1M -pass 1 -f webm /dev/null && ffmpeg -i w-bwt_vslow_crf23.mp4 -c:v libvpx-vp9 -b:v 1M -g 9999 -aq-mode 0 -pass 2 w-bwt_ex23.webm

1402 kb/s, 1800kB