Quote:
Originally Posted by QuantumRand
Just out of curiosity, is there anything inherently bad about Target Average Bitrate encoding, other than it taking a long time?
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No, two pass encoding is totally fine. Single pass ABR on the other hand has lower quality than CRF and two pass.
Quote:
Originally Posted by QuantumRand
Plus from what I've seen, turbo first-pass didn't have that huge of an effect on file size.
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What else did you expect? ABR (both single and two pass) aims for a defined bitrate, so not having "that huge of an effect on file size" is totally meaningless in these modes.
Quote:
Originally Posted by QuantumRand
I've found that a 720p backup with an ABR around 5000kbps gives a pretty consistent ~2.2GB/hour.
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Again: what else did you expect?
1h * 5000 kbit/s = 60s*60*5000kbit/s = 18,000,000 kbit ~= 2.2 GB
Quote:
Originally Posted by QuantumRand
And at 5000kbps, you can use the Normal preset and Turbo First-Pass and still get the same file size while still maintaining essentially transparent quality as you would with 16CRF. Turbo First-Pass, Normal preset takes like 25% longer than CRF16 on VerySlow but you get the same quality results. The file size is typically larger, but always consistent.
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Frankly put, you're not making any sense. Don't use fast first pass if you only want to do only a single pass, use a faster preset instead.