ffmpeg   \
         -i http://192.168.100.254:2044/rtp/239.255.7.2:5004/ \
  -acodec  libfdk_aac  -ar 44100 -b:a 64k  \
  -vcodec h264_nvenc   -preset medium -profile:v main -level 4.1  -b:v 300K  -minrate 300K -maxrate 300K  \
 -f ssegment  \
 -segment_list /home/dvb/www/swapb/ch9/info.m3u8  \
 -segment_list_flags +live  \
 -segment_atclocktime 1 \
 -hls_allow_cache 0  \
 -segment_time 4 \
 -segment_list_size 3 \
 -segment_wrap 3 /home/dvb/www/swapb/ch9/chunk-%03d.ts