RTMP推流

ffmpeg -re -stream_loop -1 -i xxxx.mp4 -acodec copy -vcodec copy -f flv rtmp://127.0.0.1/live/test

合并多张图片

ffmpeg -i %02d.jpg -filter_complex tile=1x4 output.jpg

获取AVFrame信息

ffprobe -show_frames -select_streams v -of xml xxxx.mp4 >videoframes.info

获取AVPacket信息

ffprobe -show_packets -select_streams v -of xml xxxx.mp4 >videoframes.info