Throw FatalError on video processing failure #6232

Job	Run time
Lint (Biome)	13s
Typecheck	1m 28s
Detect Changes	9s
Format (Cargo)	16s
Format (Biome)	10s
Rust cache (aarch64-apple-darwin, macos-latest)	6m 33s
Rust cache (x86_64-apple-darwin, macos-latest)	4m 15s
Rust cache (x86_64-pc-windows-msvc, windows-latest)	6m 21s
Clippy	0s
Verify Tauri plugin versions	0s
Build Desktop	0s
	19m 25s

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