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What H.264 bitrate would be simeler to Prores 422?
OK, I know the answer is it depends as its a bit like comparing apples with potatoes but am trying to get a rough idea as I am involved it a volunteer run cinema. We can play prores directly, witch is often a good option, but as X.264 is designed for playback, not editing, it must be able to create files that are smaller of a similar quality (as it uses inter-frames).
So I have read that x.264 (1080p) of 5Mbps is considered very good quality, and prores 422 would be around 35Mbps. So I am wondering if we went to something like 10Mbps if I would be creating files that were indistinguishable when viewed on a 2k projector/Small cinema.
I am using handbrake of ‘High Quality’ setting, setting VBR. I have also played with CQ 17 a bit and this seems to create good results.
Any thoughts,
ben—
Ben Edwards – Freelance Picture Editor
https://www.funkytwig.comi5 3550 3.3Ghz, Windows 7 / Mac Lion, Nvida 550 Ti, 16GB Mem
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2 Replies
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I can make a 100 GBPS/second file. We would require Petabyte of storage;).
The playback system is a computer connected to a 2k projector via DVI. At some stage we are going to guy a DCP Server but until then we are using a computer.
Ben
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Ben Edwards – Freelance Picture Editor
https://www.funkytwig.comi5 3550 3.3Ghz, Windows 7 / Mac Lion, Nvida 550 Ti, 16GB Mem
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[Ben Edwards] “So I have read that x.264 (1080p) of 5Mbps is considered very good quality, and prores 422 would be around 35Mbps. So I am wondering if we went to something like 10Mbps if I would be creating files that were indistinguishable when viewed on a 2k projector/Small cinema.”
ProRes 422 is not 35Mb it’s 140Mb, ProRes Proxy is 36Mb but that looks pretty bad.
The best way to get good results with low data rates in any Long GOP codec is with 2 pass encoding. The difference is amazing. Broadcast h264 encoders run around 20Mb for 1080. You could get similar results at 10Mb with 2 pass.
John
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