Streamable Container for HEVC (H.265) flv is a container which can be used to stream videos while they are being encoded. flv supports h.264 codec. 

However, flv doesn't support hevc codec. Is there any container for hevc which is streamable?
MPEG -TS. See here:


  All MPEG-2 TS operations from GPAC (client and MP42TS) are supported on
    HEVC. MP42TS can be used to generate TS files usable for DASH or for
    injection in modulation chains; it can also be used to send the TS over an
    UDP or RTP stream in unicast or multicast mode