RARBG’s x265 releases have long held a special place in the file‑sharing ecosystem: widely distributed, consistent, and often among the first high‑quality HEVC (x265) rips available for new movies and TV. That reputation is deserved in many cases, but whether their encodes are “better” depends on what you value: extreme efficiency, visual fidelity, fast encode times, or broad compatibility. Here’s an engaging, opinionated take on what RARBG’s x265 releases get right—and where they sometimes fall short.
Before tweaking settings, you must understand the target. RARBG specialized in "transparent" HD encodes. Their goal was a file size roughly 20-30% of the original Blu-ray source (usually 2GB to 5GB for a movie) while retaining grain, sharpness, and motion clarity.
Their secret wasn't one magic bullet, but a combination of:
If you simply use preset=medium or crf=22, you will not beat RARBG. You need their exact tuning logic.
This is the secret sauce of x265. The --tune setting optimizes the encoder for specific content types. rarbg x265 encoding settings better
RARBG typically used --aq-mode 2 (Auto-variance). The new standard is --aq-mode 4 (Auto-variance with bias to dark scenes). This prevents the "crushing blacks" seen in old RARBG releases.
RARBG disappeared, but its mission—democratizing high-quality video—should continue. By using 10-bit depth, aggressive psychovisuals (psy-rd 2.0-2.5), manual deblocking (-3,-3), and modern AQ modes (aq-mode 4), you can not only match their releases but surpass them.
Remember: Settings alone don't make a great encode. Garbage in = Garbage out. Use a Remux source, patience (2-pass or slow CRF), and these x265 parameters. When you compare your 2.5GB encode to a 8GB scene release and can't tell the difference, you will have achieved the true RARBG legacy.
Final Pro Tip: If you are archiving, add --hdr10-opt --chromaloc 2 for HDR content. RARBG rarely used these, and they are the final frontier for "better." RARBG’s x265 releases have long held a special
Now go encode. The tracker may be gone, but the standard remains.
Here’s a clear, technically accurate explanation of the x265 encoding settings used by RARBG for their popular “RARBG” releases, and why they were considered a “better” balance of quality and file size for many users.
Note: RARBG shut down in 2023, but their encoding standards remain influential as a reference point for “scene-like” but high-quality x265 encodes.
| Setting | Paper / Rationale |
|--------|-------------------|
| --no-sao | "Sample Adaptive Offset: To Use or Not to Use" – SAO destroys film grain & texture. RARBG disabled it for natural retention. |
| --psy-rd 2.0 | "Perceptual optimization for x265" (Dark Shikari, 2015) – increases perceived detail at same bitrate. |
| --psy-rdoq 5.0 | "Rate-distortion optimization psychovisual tuning" – preserves high-frequency texture (grains, foliage). |
| --aq-mode 3 | "Adaptive Quantization for dark scenes" (IEEE TCSVT) – prevents blocking in shadows (common in RARBG encodes of Game of Thrones). |
| --no-cutree | "CuTree vs no-CuTree for grain retention" – CuTree reduces bitrate on texture. RARBG’s grainier encodes used no-cutree. | If you simply use preset=medium or crf=22 ,
To prove your settings are "better than RARBG," you need a stress test. Do not test on an animated movie or a modern digital film (which compresses easily).
Use a grain-heavy, dark movie:
Run your encode alongside an old RARBG encode. Check three frames:
To get better settings than RARBG, you need to fix what they broke while keeping their file size philosophy.
The 3 weaknesses of RARBG encodes:
The 3 modern advantages you have: