x264實時視頻參數配置

有損編碼

ffmpeg.exe -i 111.mp4 -s 640x480 -b:v 1.7M -c:v libx264 -preset ultrafast -tune zerolatency -profile baseline -c:a copy -y x264_001.mp4

無損編碼

ffmpeg.exe -i 111.mp4 -s 640x480 -b:v 1.7M -c:v libx264 -preset ultrafast -tune zerolatency -crf 0 -c:a copy -y x264_002.mp4