scene change

sc.md

Slow

>  Using y4m decoder: 1920x1080p @ 25/1 fps, 4:2:0, 8-bit
>  Using 16 tiles (4x4)
>  encoded 250 frames, 5.239 fps, 2482.74 Kb/s, elap. time: 47s
>  ----------
>  Key frame:             3 | avg QP:  79.00 | avg size:   38309 B
>  Inter frame:         247 | avg QP: 138.00 | avg size:   12099 B
>  Intra only frame:      0 | avg QP:   0.00 | avg size:       0 B
>  Switching frame:       0 | avg QP:   0.00 | avg size:       0 B

Medium

>  Using y4m decoder: 1920x1080p @ 25/1 fps, 4:2:0, 8-bit
>  Using 16 tiles (4x4)
>  encoded 250 frames, 5.697 fps, 2491.00 Kb/s, elap. time: 43s
>  ----------
>  Key frame:             4 | avg QP:  79.00 | avg size:   35508 B
>  Inter frame:         246 | avg QP: 138.00 | avg size:   12080 B
>  Intra only frame:      0 | avg QP:   0.00 | avg size:       0 B
>  Switching frame:       0 | avg QP:   0.00 | avg size:       0 B

Fast

Running `target/release/rav1e --tiles 16 /home/zen/mnt/Work/vimeo-corpus-10s/coffee.y4m --scd_speed 2 -s 10 --output /dev/null`
>  Using y4m decoder: 1920x1080p @ 25/1 fps, 4:2:0, 8-bit
>  Using 16 tiles (4x4)
>  encoded 250 frames, 5.938 fps, 2520.68 Kb/s, elap. time: 42s
>  ----------
>  Key frame:             6 | avg QP:  79.00 | avg size:   44013 B
>  Inter frame:         244 | avg QP: 138.00 | avg size:   11831 B
>  Intra only frame:      0 | avg QP:   0.00 | avg size:       0 B
>  Switching frame:       0 | avg QP:   0.00 | avg size:       0 B
>  ----

Fast

analyze_next_frame 0.367 ms
fast_scenecut      0.439 ms 208
downscale          0.391 ms 214

Medium

cost_scenecut      6.317 ms 220

Slow

estimate_inter_costs_histogram 1.632 ms 226
cost_scenecut                  2.690 ms 

Medium -> Slow

https://beta.arewecompressedyet.com/?job=rav1e_sc_medium%402021-09-15T13%3A22%3A37.841Z&job=rav1e_sc_slow%402021-09-15T13%3A18%3A57.159Z