That is a drawback to Hive account@dtube, something I expect they will work on. That said, check out Hive account@vimm (vimm.tv). They are another streaming service on STEEM.

By the way, video and photos are not on the blockchain. I believe dtube does use IPFS; if not the videos are on their servers.

There will be other options for streaming very soon I am sure. Dlive only opened up another hole for developers to fill.