SRS: Room: Display:
ffmpeg -f flv -i rtmp://// -f flv -i rtmp://// \
     -filter_complex "[1:v]scale=w=96:h=72[ckout];[0:v][ckout]overlay=x=W-w-10:y=H-h-10[out]" -map "[out]" \
     -c:v libx264 -profile:v high -preset medium \
     -filter_complex amix -c:a aac \
     -f flv -y rtmp:////merge &&
echo "ok"
推流地址
推流密钥