ffmpeg.exe -hwaccels
Hardware acceleration methods:
cuda
dxva2
qsv
d3d11va
opencl
vulkan
ffmpeg -decoders
DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_qsv h264_cuvid)
(encoders: libx264 libx264rgb h264_amf h264_mf h264_nvenc h264_qsv)
DEV.L. hevc H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv hevc_cuvid)
(encoders: libx265 hevc_amf hevc_mf hevc_nvenc hevc_qsv)
//ok
ffmpeg.exe -i E:\D\video\music\libgav1-china.mp4 -c:v h264_nvenc -preset slow E:\D\video\music\libgav1-china-xx.mp4
//视频会有卡顿
使用CUVID和NVENC实现全硬件转码:
ffmpeg -hwaccel cuvid -c:v h264_cuvid -i input -c:v h264_nvenc -preset slow output.mkv
部分硬件转码，帧通过系统内存(这是必要的转码10位内容):
ffmpeg -c:v h264_cuvid -i input -c:v h264_nvenc -preset slow output.mkv