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Old 25th January 2022, 10:26   #1  |  Link
mike23
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Join Date: May 2003
Posts: 107
2-pass AVC H.264 encoding = 5% bitrate improvement over 1-pass?

I am thinking about the quality improvement when using a 2-pass AVC H.264 encoding vs 1-pass AVC H.264

In the past I read many recommendations for 2-pass encoding over only 1-pass.
So I use this 2-pass encoding during the last years.

When I compare now again the results I found hardly any quality differences.

Is this statement still true?

Is there a quality approximation similar to:

2-pass encoding at bitrate X = 1-pass encoding at bitrate (X + 5%)

with same other encoding parameters

?
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