Problems with streaming data divide into 2 kinds.

Local, your browser and or media drivers are not correct or out of date. Try installing Firefox or I-Explorer V 7. Update your Media Player to the latest version. The other possibility is that you have been hacked and 'taken' probably for some email scam.

Remote, you are connecting to a low or constrained bandwidth device. Sometimes these conditions result from network congestion, which is not unexpected at this time of year.

Final but unlikely, the wires connecting your devices are not connecting properly.

Here is some slightly unconventional picking off of YouTube
Michalis Tzouganakis