nvenc_hevc NVIDIA NVENC hevc encoder (codec hevc) nvenc_h264 NVIDIA NVENC H.264 encoder (codec h264) nvenc NVIDIA NVENC H.264 encoder (codec h264) h264_nvenc NVIDIA NVENC H.264 encoder (codec h264) To enable B-frames,pass -bf | egrep -i "npp|cuvid|nvenc|cuda"
Quality can be further improved upon by adding options such as B-frames (limit this to 3, at most, and this requires the H.264 Main profile and above).īaseline profiles do not support B-frames. Note that the -cq scale is logarithmic, meaning that 0 is essentially lossless and 51 would be the absolute worst. See this write-up for more on what CRF does. For CRF-based encodes, pass the following arguments in the snippet below to FFmpeg, assuming you're using an up-to-date build (as at the moment): -c:v h264_nvenc -preset:v p7 -tune:v hq -rc:v vbr -cq:v 19 -b:v 0 -profile:v highĪ fixed CQ value of 19 is the recommended setting as its' visually identical to 0, yet preserves good compression trade off to file size.
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