Hinting Options
 -hint                hints the file for RTP/RTSP
 -mtu size            specifies RTP MTU (max size) in bytes. Default size is 1450
                       * Note: this includes the RTP header (12 bytes)
 -copy                copies media data to hint track rather than reference
                       * Note: speeds up server but takes much more space
 -multi [maxptime]    enables frame concatenation in RTP packets if possible
        maxptime       max packet duration in ms (optional, default 100ms)
 -rate ck_rate        specifies rtp rate in Hz when no default for payload
                       * Note: default value is 90000 (MPEG rtp rates)
 -mpeg4               forces MPEG-4 generic payload whenever possible
 -latm                forces MPG4-LATM transport for AAC streams
 -static              enables static RTP payload IDs whenever possible
                       * By default, dynamic payloads are always used

MPEG-4 Generic Payload Options
 -ocr                 forces all streams to be synchronized
                       * Most RTSP servers only support synchronized streams
 -rap                 signals random access points in RTP packets
 -ts                  signals AU Time Stamps in RTP packets
 -size                signals AU size in RTP packets
 -idx                 signals AU sequence numbers in RTP packets
 -iod                 prevents systems tracks embedding in IOD
                       * Note: shouldn't be used with -isma option

 -add-sdp string      adds sdp string to (hint) track ("-add-sdp tkID:string")
                       or movie. This will take care of SDP lines ordering
 -unhint              removes all hinting information.

