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27th December 2015, 19:37 | #2 | Link | |
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GPUs are actually not that good at video encoding, which is full of tight loops and single-threaded processes like entropy encoding, and the latency of CPU/GPU memory transfers winds up being a huge tax. GPU encoding can give you something very quickly, and can have sweet spots where it gives better quality at a given throughput, particularly on systems with strong GPU and weak CPU. It's mainly interesting for live, however; the best quality encoders have always been software, by a significant margin, in the post-MPEG-2 world. |
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4th January 2016, 11:53 | #3 | Link | |
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Same as above comment - this is simple HW and it is mainly focused on speed not on quality. Or you need more bits to encode (file size increase) or you accepting overall lower quality. |
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5th January 2016, 01:21 | #6 | Link |
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Its about similar then, with one disadvantage: It uses the CPU. So if you're live encoding something, you might want the CPU to be used for that "something", like gaming, so at least for that NVENC remains an option.
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