ffmpeg 转码去掉B帧 H265

ffmpeg -i 101.h264 -c:v libx265 -preset ultrafast  -x265-params "bframes=0"  1.h265

如果是h264视频去除B帧

ffmpeg -i test.mp4 -vcodec libx264 -x264opts "bframes=0" test-640x480.h264