Install Tautulli (for Plex). It will notify you if you accidentally downloaded a 720p file when a 4K version exists. Set a minimum bitrate threshold of 8 Mbps for "better" classification.
Conclusion (preservation): lawful, DRM-free acquisition and institutional archives are best for longevity. film4 movies download better
If you want to keep a Film4 movie forever, buy it. When you purchase Slumdog Millionaire (a Film4 co-production) on iTunes, you can download a 4K HDR copy directly to your hard drive. Install Tautulli (for Plex)
What about older Film4 movies that never got an HD release (e.g., Bhaji on the Beach from 1993)? You cannot download what does not exist. But you can make it better. Cultural heritage:
Many classic Film4 productions (like Sexy Beast or Ratcatcher) are licensed to MUBI or The Criterion Channel. These platforms offer superior download quality.
Contrary to popular belief, you do not need to pirate Film4 movies to get high-quality downloads. The production company has deep ties with major streamers.