After big jobs at ABC and Netflix, the executive Channing Dungey takes charge of Warner Bros.

Hollywood’s revolving door keeps spinning for top-level executives.

Channing Dungey will replace the longtime executive Peter Roth to become the chairwoman of the Warner Bros. television studio early next year, WarnerMedia announced on Monday.

Ms. Dungey, who became the first Black executive to run an entertainment division at a major network when she joined ABC in 2016, departing in 2018, will take control of one of the biggest television studios in the industry.

The Warner Bros. television studio makes hit programs shown on many networks, including “The Bachelor” (ABC) “Riverdale” (a show that aired on the CW and became more popular when it started streaming on Netflix) and “Young Sheldon” (CBS).

Under Ms. Dungey, Warner Bros. is also expected to be a big supplier to Warner Media’s five-month old streaming platform, HBO Max.

“This is such an electric time in our industry, and we have so much opportunity available to us between Warner Bros.’ core businesses and HBO Max, I cannot wait to dive in,” Ms. Dungey said in a statement.

With her appointment, Ms. Dungey becomes one of the few Black executives in charge of a Hollywood television studio. Pearlena Igbokwe took over Universal’s television studio in 2016 and was given a broader portfolio last month, when she was named the head of NBC Universal’s television studios.

Most recently, Ms. Dungey was the vice president of original series at Netflix, where she oversaw mostly drama series for the streaming outlet. She abruptly announced her departure on Oct. 9, and many in Hollywood presumed she would find her way to Warner Bros.

Mr. Roth announced his departure on Friday. His exit comes shortly after an August shake-up at WarnerMedia under its recently installed chief executive, Jason Kilar.

Ms. Dungey had a brush with fame in 2018 when ABC canceled its revival of the hit show “Roseanne” after the star, Roseanne Barr, posted a racist tweet. When the network announced the cancellation, Ms. Dungey drew praise on social media after calling the tweet “abhorrent, repugnant and inconsistent with our values.”