空间分辨率与时间分辨率Spatial vs Temporal Resolution

空间分辨率管「画面里有多少像素」，时间分辨率管「每秒采多少个瞬间」——两个不同方向的轴，别混成一个「清晰度」。

• 空间那一维：480p / 720·1080p / 4K——格子越密，同一画面装的细节越多。
• 时间那一维：24 / 30 / 60 / 120fps——采样越密，运动越连贯（见 帧率 · 时间分辨率）。
• 1080p60 两个都在动：数字是空间，60 是时间；升级前先想清楚要的是哪一维。
• 都是采样：空间切网格、时间切瞬间（见 采样）——格子外的信息和帧间的运动都不在文件里。

Spatial resolution is how many pixels the picture holds; temporal resolution is how many instants each second samples — two axes pointing different ways; do not collapse them into one word, "clarity".

• The spatial leg: 480p / 720·1080p / 4K — the denser the grid, the more detail the same frame carries.
• The temporal leg: 24 / 30 / 60 / 120fps — denser sampling, smoother motion (see Frame rate · Temporal resolution).
• 1080p60 moves on both: 1080 is spatial, 60 is temporal; know which leg you are upgrading before you pay for it.
• Both are sampling: space cut into a grid, time into instants (see Sampling) — what is outside the grid and between the frames is not in the file.