The filename indicates it is likely a "Remux" (RM) source—meaning lossless video from the original 4K Blu-ray—scaled down to 1080p using the Technical Review & Expectations Visual Fidelity
This article breaks down every component of that filename, explains the technology behind it, discusses why such files are problematic, and offers legal alternatives to enjoy high-quality cinema. Dune Part Two 10bit 4K RM 1080p AV1tester.mkv
| Platform | Max Resolution | HDR | Atmos | 10-bit | Price | |----------|---------------|-----|-------|--------|-------| | | 4K | Dolby Vision | Yes | Yes | $9.99-15.99/mo | | Amazon Prime Video | 4K | HDR10+ | Yes | Yes | Rental $5.99 | | Apple TV/iTunes | 4K | Dolby Vision | Yes | Yes | Purchase $19.99 | | 4K Blu-ray Disc | Native 4K | Dolby Vision | Yes | Yes (10-bit) | $24.99-$34.99 | | Vudu/Fandango | 4K | HDR10 | Varies | Yes | Rental $5.99 | The filename indicates it is likely a "Remux"
The filename claims both and 1080p – an impossibility unless: explains the technology behind it