Here is an example that works for me

<video src="https://ipfs.io/ipfs/QmcgxkqDJjeP1NrrGZt1efNcxcbAk64uyDxe9AguSyrSi6" poster="https://dtube1.gateway.ipfsstore.it:8443/ipfs/Qme8a4Y5AAy8n45LBS4teCjBV75EEMfp4bwieMrefhn9k7" controls="true"></video>```


###You can copy video source by right clicking on video and selecting "Copy Video Location"
Be sure to include a poster="" attribute in the <video> tag. Poster adds the still image that is displayed when the video has not been clicked.

You can find the DTube poster source, in the HTML source code. Or just use your own. Cheers!