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12:13 | k0fein | thanks for the answer. Magwell offers and example to grap frame directly to NVENC mapped memory and bypass normal ram entirely. This works nice, however from time to time frame is dropped and I was not sure why (now it seems that due to fact how that example was written - encoding and capturing were synchronous by default). I needed to put timestamp into picture prior to grabbing because I hadn't have the
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12:13 | k0fein | memory under control and I didn't want to spend time (cpu or gpu) on rendering (to not distort time statistics)
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12:13 | k0fein | *grab frame
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12:14 | k0fein | but it seems to be irrelevant, once I made everything asynchronous I didn't noticed any other frame drops
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15:10 | Bertl_oO | ah, nice to know that this works? care to share the code?
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15:23 | k0fein | you can download SDK directly from their page -> https://www.magewell.com/downloads#capture-sdk-dark-anchor (once you click download you don't have to actually register, at the bottom of the dialog is opti0on 'Download only')
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15:23 | k0fein | once you install it, the working example is in folder SDK3\Examples\VC++\CmdTools\NvidiaCodec
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15:24 | k0fein | they are using nvenc v7.something, so a little bit outdated (11.1 is recent as far as i remember)
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15:24 | k0fein | but it works
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15:24 | k0fein | now I making some profiling, encoding fullhd progressive @ 59.94, then the same with 1/2 of the size and 1/4 (magewell does the resizing so it costs me nothing) and it looks most of the time ok
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15:25 | k0fein | encoding time is below frametime
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15:25 | k0fein | however from time to time (once per 2 - 5 minutes?) it jumps on 1 frame to ~ 50ms
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15:25 | k0fein | I'm not sure yet if this will cause me a problem or not
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15:34 | Bertl_oO | I was referring to the asynchronous part
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15:35 | Bertl_oO | but thanks for the explanation!
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16:02 | k0fein | async part is part of the example
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16:03 | k0fein | you just have to set, that you want async encoding
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16:04 | k0fein | sample.cpp:148
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16:04 | k0fein | m_stCreateEncodeParams.enableEncodeAsync = 0;
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16:04 | k0fein | set it to 1
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16:04 | k0fein | btw both H264 and H265 works ok
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16:04 | k0fein | at least with presets I tried so far
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17:32 | Bertl_oO | ah, excellent! thanks!
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