Open your terminal. Point it to your Blu-ray rip. Run the x265_10bit command with crf 19 , aq-mode=3 , and no-sao=1 . The result will be a clean, watchable file that would have made RARBG proud.
-c:a libopus -b:a 128k -ac 2 x265 has notorious pitfalls. Here is how RARBG's settings mitigated them: Rarbg X265 Encoding Settings
For nearly two decades, RARBG was a titan in the digital torrenting world. While the site shut down in 2023, its legacy lives on through its meticulously crafted internal releases. Among tech-savvy archivists and home theater enthusiasts, one question remains persistent: What encoding settings did RARBG use for their x265 (HEVC) releases? Open your terminal
| Source Resolution | Source Type | CRF Value | Average Bitrate (Typical) | File Size (90-min film) | | :--- | :--- | :--- | :--- | :--- | | | Movie | 18 | 8-12 Mbps | 8-12 GB | | 1080p | Movie (Clean) | 19 | 3,500 - 5,000 kbps | 2.5 - 3.5 GB | | 1080p | Movie (Grainy) | 20 | 6,000 - 8,000 kbps | 4 - 6 GB | | 720p | Movie | 21 | 1,500 - 2,500 kbps | 1.2 - 1.8 GB | | 1080p | Anime | 18 | 2,500 - 3,500 kbps | 1.8 - 2.5 GB | The result will be a clean, watchable file
The settings documented here are not just nostalgia; they are a functional template. If you are encoding a personal Plex library today and want the best size-to-quality ratio for general viewing, Conclusion: Running the Command The perfect RARBG x265 encode is a chain of compromises: sacrificing pristine audio for video bits, smoothing grain for compression, and disabling SAO for sharpness. You can mourn the loss of the website, but you can still run the encodes.
Goodbye, RARBG. Your settings live on in every well-encoded MKV.
ffmpeg -i input.mkv -c:v libx265 -preset medium -crf 19 \ -x265-params "aq-mode=3:aq-strength=1.0:no-sao=1:deblock=-2,-2:limit-sao=1:rskip=2" \ -c:a aac -b:a 384k -c:s copy output.mkv | Flag | Value | RARBG Reasoning | | :--- | :--- | :--- | | -preset | medium | Slower than fast , but yields 15% better compression. Slow was too time-consuming for mass encoding. | | -crf | 19 | The "golden value." 18 is visually lossless but larger; 20 shows slight macroblocking in dark scenes. 19 was the compromise. | | aq-mode | 3 | Adaptive Quantization mode 3 (Auto-Variance). Essential for preserving detail in dark areas (a weakness of early x265). | | aq-strength | 1.0 | Mild. Stronger values (1.4) flatten texture. RARBG kept it moderate to retain face details. | | no-sao | 1 | Disables Sample Adaptive Offset. Controversial: SAO smooths artifacts but blurs edges. RARBG turned it off to keep sharpness. | | deblock | -2,-2 | Aggressive deblocking filter. Removes blocking artifacts but can soften fine detail. This gave RARBG encodes their "clean" look. | | rskip | 2 | Early CU size decision. Speeds up encoding by 40% with minimal quality loss—essential for their workflow. | Part 3: The "Anime vs. Live Action" Fork RARBG handled anime differently than live-action. If you study their releases, you’ll notice two distinct profiles. For Live Action (Grainy / Noisy sources) Grain is the enemy of x265. RARBG used a light denoise filter via -vf hqdn3d to tame grain before encoding.