Video Bitrate
Pick resolution, frame rate, codec (H.264/H.265/AV1) and quality and I estimate the required bitrate and file size by duration. Bits-per-pixel estimate; real bitrate depends on content.
Codec comparison · same quality
| Codec | bpp | Bitrate | Per hour |
|---|
How it is computed · bits per pixel
1. Bitrate:
bps = width × height × fps × bpp.
2. The bpp (bits per pixel) depends on the
codec and quality. H.264: 0.06 / 0.10 / 0.15 (low/medium/high);
H.265 ≈ half: 0.03 / 0.05 / 0.075; AV1/VP9 a bit less:
0.025 / 0.04 / 0.06.
3. File size:
bytes = bitrate / 8 × duration_s. In Mbps and GB:
Mbps = bps / 1e6, GB = bytes / 1e9.
! This is an estimate. A
VBR encoder spends bits based on scene complexity: the same
preset uses more on action or grain and less on static shots. The real bitrate
is driven by the content, the preset and the encoder profile.
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