Questions remain after Paramount and YouTube TV agreed on a 'short term extension,' including how long the agreement will last.

Several channels owned by Paramount could go dark on YouTube TV if a new contract cannot be reached between the companies.

In an eleventh-hour agreement late Thursday night, YouTube TV reached what it called a "short-term extension" with Paramount to keep channels such as CBS, Comedy Central and MTV on its subscription streaming service after access to them was set to go dark following failed negotiations around a contract renewal.