推荐编码参数

针对输入的test.yuv为1080p场景，恒定码率编码（帧率为$fps，码率为$bitrate）推荐编码参数。

• 低时延

  ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 6 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 0 -bframe_nums 0 -delay 1 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4

• 高清

  ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 6 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 0 -bframe_nums 3 -delay 4 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4

• 点播

  ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 2 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 1 -bframe_nums 7 -delay 25 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4

• 无编码场景要求

  ffmpeg -s 1920x1080 -i test.yuv -c:v libhw265 -qualityset 6 -rc 1 -abr_bitrate $bitrate -fps_num $fps -keyint $fps*2 -adap_I 0 -bframe_nums 3 -delay 4 -frame_threads 4 -wpp_threads 4 -analysis_threads 3 test.mp4