Their target audience was the "cord-cutter" with a medium-sized hard drive, a slow internet connection, or a Plex server with limited upload bandwidth.
RARBG knew that pure PSNR metrics don't matter to human eyes. They heavily tweaked the psycho-visual settings:
This is non-negotiable. x265 needs time to analyze motion vectors. Faster presets result in "blocky" artifacts in high-motion scenes. 4. Advanced "Extra Options" String Rarbg X265 Encoding Settings
Unlike many release groups that use Constant Rate Factor (CRF) to maintain uniform quality, RARBG frequently utilized or 2-pass encoding targets.
rather than Constant Rate Factor (CRF). This ensured that every release of a similar length resulted in a predictable file size, usually between 1.8 GB and 2.5 GB for a standard feature film. Compatibility : Their files often used the .mp4 container Their target audience was the "cord-cutter" with a
Several tools are available to help you work with Rarbg X265 encoding settings:
RARBG enforced hard rules to avoid common HEVC pitfalls: x265 needs time to analyze motion vectors
These settings provide a good balance between encoding speed, compression efficiency, and quality.
MediaInfo data from RARBG releases reveals a highly specific set of x265 parameters designed to maximize compression without losing essential detail: