Shetland S03e02 Libvpx -

| Flag | Reason | |------|--------| | -pix_fmt yuv420p10le | 10‑bit colour depth for HDR. | | -color_trc smpte2084 / -color_primaries bt2020 | BT.2020/BT.2100 colour space – matches modern HDR TVs. | | -tile-columns 4 -tile-rows 2 | Enables tile‑based parallel decoding, improving playback smoothness on low‑power devices. | | -row-mt 1 | Row‑level multi‑threading – speeds up encoding on multi‑core servers. | | -g 240 | Keyframe interval of 10 seconds (24 fps × 10) – good for adaptive streaming. | | -c:a libopus | Opus provides superior audio quality at lower bitrate than AAC. |

# 480p @ 1 Mbps ffmpeg -i shetland_s03e02_4k_vp9_hdr.webm \ -c:v libvpx-vp9 -b:v 1M -crf 32 -maxrate 1.2M -bufsize 2M \ -vf "scale=854:480" \ -c:a libopus -b:a 64k \ -f webm \ shetland_s03e02_480p_vp9.webm shetland s03e02 libvpx