VBR 2 pass & 1 pass

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DMKAlex wrote:

Vesku wrote:

DMKAlex wrote:

Can someone explain this please?

Thanks.

CBR = constant bitrate

VBR = variable bitrate (more bitrate when lots of sharp motion, less with static scene)

2 pass = First pass anylyses how much bitrate needed and second pass renders the video. Needs twice the time to render.

Since 2 pass requires twice the time to render, is there any distinct benefit over 1 pass?

And what benefit that VBR over CBR, or vice versa?

2 pass optimizes bitrate so it makes smaller file with about the same quality as 1 pass.

VBR makes also smaller file than CBR because it uses only the bitrate it needs. Static scenes uses very low bitrate with VBR but CBR uses max all the time.

VBR 2 pass & 1 pass

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原文地址：https://www.cnblogs.com/aspirs/p/9651018.html