If you’re looking for information about the film’s (rather than help with the file itself):
: 999MB is too small for a 720p uncut 175-minute war epic. A 480p (DVD resolution) encode at the same size would look better.
Here is why this film, especially in its uncut form, is a fascinating piece of cinema history.
634 kbps for 720p is extremely low. Expect:
Despite initial successes, the operation was plagued by intelligence failures, poor weather, and unexpectedly strong German resistance. The most significant failure occurred at Arnhem, the "bridge too far," where the British 1st Airborne was isolated and eventually forced to retreat after suffering heavy casualties. A Masterpiece of War Cinema