Based on our analysis, the default x265 encoding settings on RARBG are:
The slow preset enables advanced motion estimation and block analysis features (like rect and amp ). It takes longer to encode but provides significantly better compression efficiency than medium . Advanced Psychovisual & GOP Settings
These settings tell the encoder to favor sharp, grainy images over perfectly smooth, blurry ones. --psy-rd 2.0 --psy-rdoq 1.0
Mastering RARBG-Style x265 Encoding Settings: The Ultimate Guide to High-Efficiency Video Compression Rarbg X265 Encoding Settings
: Elevates the psycho-visual strength. This forces the encoder to prioritize details that the human eye actually notices, maintaining textures like clothing patterns and hair even at low bitrates.
Standard 6-channel AC3 (Dolby Digital) at 448 kbps or 2-channel AAC, stripping out heavy TrueHD or DTS-HD master tracks to save space.
: If you have a file that stutters, simply remux it using the latest MKVToolNix Based on our analysis, the default x265 encoding
Sample Adaptive Offset (SAO) is on by default in x265, but it tends to cause a slight blur or loss of fine detail (like skin texture). RARBG disabled this to keep images sharp. AQ-Mode: 3
This enforces Rate-Distortion Optimized Quantization, which tricks the encoder into perceiving grain and noise as important visual information, ensuring they are preserved. 3. Adaptive Quantization ( --aq-mode 3 )
In the text box at the bottom, paste the following specific HEVC tweaks to emulate the RARBG visual profile: no-sao=1:psy-rd=2.0:psy-rdoq=1.0:aq-mode=3 Why the Legacy Matters --psy-rd 2
Match source resolution (e.g., 1920x1080). Set Anamorphic to Off. Video Codec: H.265 10-bit (x265). Framerate: Same as source, Peak Framerate. Encoder Preset: Slow. Constant Quality: 21 RF.
From that day forward, Alex and RARBG collaborated on various projects, optimizing encoding settings for diverse use cases. Their partnership helped make high-quality video more accessible, fostering a new generation of enthusiasts who shared their passion for exceptional video encoding.
The core of the RARBG "look" relied on a specific combination of bitrates, 10-bit color depth, and standardized x265 parameters. Standard Encoding Parameters
While RARBG used various internal scripts, the community reverse-engineered their typical x265 command structure. Here is the baseline they used for a standard 1080p Blu-ray to x265 conversion: