Better Patched | Rarbg X265 Encoding Settings

RARBG's x265 encoding settings are generally reviewed as "best-in-class" for efficiency and low file size , specifically for casual viewing on standard displays

. While they prioritize storage savings, they are often considered superior to other "micro-sized" groups like YTS/YIFY due to better parameter tuning and the inclusion of subtitles. Quality vs. File Size Review Target Size : Typically 1.5 GB to 2.0 GB for a standard 1080p movie. Visual Fidelity : Excellent for most viewers, but can struggle with high-motion scenes or heavy film grain , which may result in visible artifacts. Bitrate Strategy : They use roughly 2500 kbps for 1080p

content, which is about half the size of standard x264 encodes while maintaining similar perceived quality. Comparison to Other Groups Review Consensus Target Audience Sweet spot for quality/size; very consistent. High-volume collectors, small screens. Higher quality and transparency; larger file sizes. Quality enthusiasts, large TVs. Comparable to RARBG in size; often uses 10-bit. Extreme storage savers. Lower quality tier; prone to heavy compression artifacts. Mobile devices, low bandwidth. Replicating the "RARBG Style" Settings For users looking to achieve similar results in tools like , community-sourced "RARBG-style" settings include: Preset Options — x265 documentation - Read the Docs

The Legacy

With RARBG gone, the landscape has fragmented. While groups like Tigole, Joy, and UHA existed before and continue to exist, RARBG provided a centralized "safe bet."

Their x265 settings were better not because they were the absolute best possible quality (REMUX is always better), but because they represented the perfect average. They respected the source material enough to avoid ugly compression artifacts, while respecting the user’s bandwidth and hard drive space.

For those looking to replicate RARBG quality today, the standard rule remains: use a slower preset, a balanced CRF (around 20), and always encode from the highest quality source available.

The former release group RARBG was widely known for providing a consistent balance between high-definition visuals and small file sizes. If you are looking to replicate or improve upon their "x265" formula, you need to understand that they prioritized efficiency and speed over absolute transparency.

To achieve "better" results, you can shift from their high-speed, constant bitrate (CBR) approach to a quality-based encoding method that preserves more detail while keeping the file size manageable. Understanding the RARBG "Baseline"

RARBG typically used x265 10-bit with settings designed for speed and device compatibility. Their standard 1080p rips often aimed for a target bitrate of roughly 2500 kbps.

Method: Likely multi-pass or CBR (Constant Bitrate) to ensure predictable file sizes. Profile: Main 10@L4.0 or similar.

Key Tweak: Often used aq-mode=3 to help maintain detail in dark scenes. The "Better" Formula: CRF over Bitrate

The most significant improvement you can make is switching to Constant Rate Factor (CRF) encoding. Unlike CBR, which forces a specific bitrate regardless of the scene's complexity, CRF varies the bitrate to maintain a consistent quality level. Resolution Recommended CRF RARBG Target Bitrate 720p ~1500 kbps 1080p ~2500 kbps 4K (HDR)

For a collection that looks better than standard scene releases, a CRF of 22 on the Slow preset is widely considered the "sweet spot" for 1080p content. Optimized x265 Settings for Superior Quality rarbg x265 encoding settings better

To surpass the quality of standard compressed releases, use these specific parameters in your encoding software (like Handbrake or FFmpeg): 1. Use the "Slow" Preset

Presets like medium or fast take shortcuts to save time. The slow preset enables more advanced motion estimation and sub-pixel analysis, which significantly improves the quality-to-size ratio. 2. Advanced Parameters (x265-params)

Adding these specific flags can resolve common compression artifacts like "blocking" or "banding":

Optimized x265 Encoding: Achieving the "RARBG" Balance RARBG releases became famous for their consistent balance of small file sizes (often around 1.5 GB to 2.5 GB for 1080p) and surprisingly good visual quality. To achieve or even improve upon these results, you can use modern x265 (HEVC) encoding parameters that prioritize efficiency and consistency. Key Settings for Better x265 Encodes

For high-quality, efficient video, use these recommended parameters in tools like Handbrake or via FFmpeg.

Rate Control (CRF): Instead of a fixed bitrate, use Constant Rate Factor (CRF) for consistent quality.

CRF 20–22: Recommended for a high-quality "transparent" look on 1080p content.

CRF 22–24: Optimal for 4K content to keep file sizes manageable without visible artifacts.

Encoder Preset: The "Slow" or "Slower" presets allow the encoder more time to analyze the video, resulting in better quality per megabyte of data. Avoid "Placebo" as the gains are negligible for the massive time increase.

Bit Depth (10-bit): Even for 8-bit sources, encoding in 10-bit (Main10) significantly reduces "banding" in dark scenes or sky gradients.

Audio: To match the RARBG standard, use AAC-LC with a bitrate of 224 kb/s for 2-channel or 5.1 surround sound to save space while maintaining clear audio. Optimized Parameter Strings

If you are using advanced tools, adding these specific custom parameters can further refine the output: Suggested x265 Parameters General Film preset=slow:crf=21:aq-mode=3:psy-rd=1.0:psy-rdoq=1.0 High Grain/Action preset=slow:crf=20:limit-sao:bframes=8:psy-rd=1.5:aq-mode=3 Animation/Anime RARBG's x265 encoding settings are generally reviewed as

preset=slower:crf=19:bframes=8:aq-mode=3:aq-strength=0.8:deblock=1,1 Comparison: Why x265 is Better than x264

While the original RARBG standard often used x264 for compatibility, switching to x265 provides several advantages:

Higher Efficiency: Achieving the same quality as x264 at roughly 50% the bitrate.

Better Outlines: x265 handles sharp edges and outlines better, especially in high-resolution content.

Reduced Artifacts: It is much less prone to "blocky" artifacts in blurred or bokeh areas.

For more detailed guides on specific presets, you can refer to the official x265 documentation.

Part 10: The Verdict – When to use these settings

These "Better than RARBG" settings are not for archivists (use Remux) and not for mobile phones (use AV1).

They are for the RARBG user:

• You have a 1-4TB hard drive.
• You watch on a 1080p or 4K TV via USB/Plex.
• You want 1,000 movies, not 100.
• You hate banding, blockiness, and waxy faces.

Final advice: Do not blindly copy RARBG’s old CRF 23 medium preset. The world of x265 has moved forward. Use CRF 22, Preset Slow, no-sao, aq-mode=3, and Opus audio. You will honor the RARBG legacy by making their famous small files actually look good.

RIP RARBG. You taught us that smaller doesn't have to mean worse. Now we know how to do it better.

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. Part 10: The Verdict – When to use

RARBG’s x265 Encoding Philosophy

RARBG was not a traditional “scene” group (which follows strict, often x264-based rules). Instead, they prioritized:

• Small file sizes (typically 1.5–3 GB for a 1080p movie)
• Hardcoded subtitles for non-English parts (not burned into the video, but often included as selectable .srt)
• 10-bit color depth (even for 8-bit source material – this improves gradient handling and compression efficiency)
• Audio – Usually AC3 5.1 @ 640 kbps (sometimes AAC 5.1 for smaller sizes)
• Source – Always from a high-quality Blu-ray or WebDL (not re-encoding a re-encode)

Verdict from deep analysis

RARBG chose speed × file size × grain retention – not maximum compression. A better encode than RARBG means:

• Same file size → higher SSIM (use --ssim-rd)
• Or 20% smaller file at same visual quality (use --crf 20 --preset slower --no-sao --aq-mode 3 --psy-rd 2.0)

No single paper defines RARBG. They merged:

• x265 defaults (multicoreware)
• Scene group heuristics (trial & error on 10,000+ movies)
• Viewer complaints ("too blocky" → lowered deblock)

If you want the actual mathematical optimization behind their quantizer distribution, see "Rate-distortion optimization in HEVC" (Sullivan et al., IEEE TCSVT 2012) – that’s the deep paper underlying all x265, including RARBG’s tweaks.

The Base Command (1080p Movie, 2.5GB target)

ffmpeg -i input.mkv -map 0:v:0 -map 0:a:0 -map 0:a:1? \
-c:v libx265 -preset slow -tune grain \
-x265-params "crf=22:profile=main10:aq-mode=3:no-sao=1:deblock=-1,-1:psy-rd=2.0:rdoq-level=2:qcomp=0.7" \
-c:a libfdk_aac -b:a 192k -ac 6 \
-c:a libmp3lame -b:a 128k -ac 2 \
-output.mkv

Key Setting Explanations

| Setting | Value | Why RARBG used it | |---------|-------|--------------------| | Profile | main10 | 10-bit encoding – better compression, less banding | | Preset | medium | Best speed/compression trade-off | | CRF | 19–22 | Lower CRF = higher quality; they often used 20 for 1080p | | AQ-mode | 3 (Auto-Variance) | Preserves detail in dark/flat areas | | No SAO | Disabled | Prevents blurring of fine detail (slightly less compression, sharper image) | | Deblock | -2:-2 | Stronger deblocking filter to reduce blocking artifacts at low bitrates | | Psy-RD / Psy-RDOQ | 2.0 / 1.0 | Retains film grain and texture – crucial for “better” subjective quality | | RDOQ level | 2 | More precise quantization – better detail retention per bit | | ME | star | More thorough motion estimation (better than umh or hex) | | B-frames | up to 8 | Improves compression in still/low-motion scenes |

Part 5: The Holy Grail – Two-Pass Bitrate Encoding

RARBG rarely used 2-pass; they used CRF (Constant Rate Factor). CRF gives variable quality. For truly better results, use 2-pass to hit an exact file size.

Scenario: You want a perfect 2.0GB file for a 90-minute movie.

Pass 1 (Analyze): -x265-params "pass=1:stats=stats.log:bitrate=2500:no-sao=1:aq-mode=3"

Pass 2 (Encode): -x265-params "pass=2:stats=stats.log:bitrate=2500:no-sao=1:aq-mode=3:psy-rd=2.0"

Why this beats RARBG? 2-pass ensures the explosion in the third act gets the same visual quality as the dialogue scene in the first act. RARBG’s CRF method sometimes choked on high-motion scenes.

Part 3: Why "Better" Than RARBG is Easy (2025+)

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:

1. Grain destruction: Action movies (Die Hard, Aliens) looked smeary.
2. Anime banding: Their settings struggled with gradients in animated skies.
3. Subtitle burn-in: They hardcoded English subs only, wasting bitrate.

The 3 modern advantages you have:

1. x265 version 3.5+ (40% better psychovisual optimization)
2. AV1 vs. x265 analysis (We can use smarter x265 tune settings)
3. SVT-AV1 as a backup (But this article stays on x265)