Below is a documentary, Assignment China: The Chinese Civil War from the University of Southern California's U.S.-China Institute, published on 10 Apr 2012
"The Chinese Nationalist Party (Kuomintang or KMT) and the Chinese Communist Party (CCP) had originally cooperated in seeking to wrest control of China from landlords and foreign forces. In April 1927, they split and began a decades-long civil war, interrupted only in part by Japan's invasion. With Japan's surrender and the failure of the American mediation effort, the two sides resumed their struggle in late 1945. This segment of Assignment: China examines efforts by journalists to report on this final four years of the war and its impact on Chinese society. It features archival photos and interviews as well as interviews with some of those who brought news of this battle for the world's largest country to Americans via newspapers and magazines, newsreels, and radio."
Clickview video: Events of China's Communist Revolution
Following the second Sino-Japanese War, China lay in ruins politically and militarily. This program follows the internal conflict between the Communist People's Liberation Army (PLA) and the Chinese Nationalist Party (the Kuomintang). Civil war ignites in 1946, setting the stage for the Communist Revolution that will transform and modernise China, though at a great and tragic human cost.
Although a review of the book China's War with Japan, 1937-1945: The Struggle for Survival, it gives a succinct account of the Sino-Japanese War.
Below is a propaganda film from the Morale Services Division of the US Army, Battle for China Information Film #6.