Just found these late last night on Youtube.
1949:
https://www.youtube.com/watch?v=XCjtz_6rTus&t=256s
1945:
https://www.youtube.com/watch?v=EDm_nA-q-qs&t=590s
Here are also two videos I just found, but have not watched yet:
The 1951 pennant race and World Series:
https://www.youtube.com/watch?v=BDZ6eFRnAEM
And the 1935 World Series (!):
https://www.youtube.com/watch?v=5QWeJfFvzV0
The 1949 Video looks like it was made yesterday, though around game 3 or 4 runs into some technical glitches, then comes back. The narrator is Humphrey Bogart !
I have never really seen Jackie Robinson or Joe Dimaggio, Roy Campanella or Pee Wee Reese or Phil Rizzuto in game action (Yogi yes because the 7th games of the 1952 and 1960 Series have been online for years).
The 1945 video is also cool - Roy Cullenbine, Hank Greenberg, Phil Cavaretta, Stan Hack, Hal Newhouser, Virgil Trucks, a bunch of the players we draft in the 1940s progressive league drafts, they're all here.