Hi, Please help review this nvenc patch for input surface optimization.
This patch aims to reduce the number of input/output surfaces NVENC allocates per session. Previous default sets allocated surfaces to 32 (unless there is user specified param or lookahead involved). Having large number of surfaces consumes extra video memory (esp for higher resolution encoding). The patch changes the surfaces calculation for default, B-frames, lookahead scenario respectively. Change in location of surfaces and async_depth determination. Putting it prior to rate control setup. Current code limits lookahead depth to be 27 (default surface (32) - P interval (1) - 4). The other change involves surface selection. Previously, if a session allocates x surfaces, only x-1 surfaces are used (due to combination of output delay and lock toggle logic). To prevent unused surfaces, changing surface rotation to using predefined fifo. Miscellaneous - add "auto" option in level. (was approved in a previous patch that never propagated into the repository) This patch is currently present in ffmpeg: https://github.com/FFmpeg/FFmpeg/commit/8de3458a07376b0a96772e586b6dba5e93432f52 Thanks, Ben ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------
NVENC_Input_Surface_Reduction_Optimization.patch
Description: NVENC_Input_Surface_Reduction_Optimization.patch
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