learn.howToCalculate
learn.whatIsHeading
Converts between common video resolutions (480p, 720p, 1080p, 4K) and shows pixel counts and file size estimates.
公式
File size = resolution × frame rate × bit depth × duration
ステップバイステップガイド
- 1Standard resolutions have fixed pixel dimensions
- 2File size = resolution × frame rate × bit depth × duration
- 3Codec compression dramatically reduces actual file size
解いた例
入力
1080p video
結果
2.07M pixels
避けるべきよくある間違い
- ✕Ignoring codec compression in file size estimates
- ✕Confusing resolution with quality (bitrate matters too)
よくある質問
How much storage does 4K video use?
Roughly 375 MB/minute for H.265, or 750 MB/minute for H.264.
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