[FFmpeg-user] NVENC with transparency
Joshua Grauman
jnfo-c at grauman.com
Mon Mar 23 20:05:54 EET 2020
Hi all,
I have a GeForce GT 1030/PCIe/SSE2 that supports NVENC and I have ffmpeg
compiled with nvenc support.
./ffmpeg -encoders 2>/dev/null | grep nvenc
V..... h264_nvenc NVIDIA NVENC H.264 encoder (codec h264)
V..... nvenc NVIDIA NVENC H.264 encoder (codec h264)
V..... nvenc_h264 NVIDIA NVENC H.264 encoder (codec h264)
V..... nvenc_hevc NVIDIA NVENC hevc encoder (codec hevc)
V..... hevc_nvenc NVIDIA NVENC hevc encoder (codec hevc)
Am I correct that nvenc could never help accelerate the following command
and that it can only help encode h264/h265?
ffmpeg -f rawvideo -pixel_format bgra -video_size $SIZE -framerate $2 -i - -vcodec utvideo $1.avi
Secondarily, is there any way to get h264/h265 to encode with transparency
(or any way to get the nvenc encoder to encode a video with transparency
at all)? Thanks!
Josh
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