Before diving into commands, you must understand their target. RARBG was not a "remux" group (lossless rips). They catered to users with moderate bandwidth and storage constraints. Their goal was .
ffmpeg -i INPUTMOVIE.mkv \ -map 0:V:0 -map 0:m:language:eng -map 0:s? -disposition:s:0 default \ -c:a eac3 -ac 6 -b:a 384k -c:s copy \ -c:v libx265 -pix_fmt yuv420p10le -preset slow -crf 22 \ -maxrate 4500K -bufsize 9M \ -x265-params "max-merge=5:limit-refs=3:rd=4:rc-lookahead=48:bframes=8:aq-mode=3" \ OUTPUTMOVIE.mkv
Often hovering between 1200 kbps and 2200 kbps for 1080p.
ffmpeg -i input_bluray.mkv \ -c:v libx265 -preset slow -crf 21 \ -pix_fmt yuv420p10le \ -colorspace bt709 -color_primaries bt709 -color_trc bt709 \ -x265-params aq-mode=3:aq-strength=1.0:qcomp=0.60:psy-rd=1.00:psy-rdoq=1.50:no-sao=1:deblock=-1,-1:ctu=64 \ -c:a ac3 -b:a 640k \ -c:s copy \ output_rarbg_style.mkv Use code with caution. Summary Checklist for HandBrake Users Rarbg X265 Encoding Settings
Although RARBG ceased operations, the specific encoding footprint they popularized remains the gold standard for personal media servers and digital archiving today. By migrating from x264 to x265 with these precise custom settings, the community proved that it is possible to reduce a bulky 40 GB Blu-ray rip down to an easily manageable 2 GB file that still looks stunning on a massive 4K television.
To understand RARBG's settings, you first need a solid grasp of the core pillars of x265 encoding.
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 ) Before diving into commands, you must understand their
: In high-motion scenes or very "grainy" films, the aggressive compression can soften fine textures compared to a full Blu-ray remux.
RARBG typically configured their automated encoding pipelines to use preset slow . This allowed for superior motion estimation and more efficient allocation of bits compared to the medium or fast settings used by lesser release groups.
RARBG encodes targeted high compatibility and strict storage efficiency. Their standard 1080p x265 encodes typically targeted a video bitrate between , while their 4K encodes hovered around 12 Mbps to 16 Mbps . Their goal was
Setting --bframes 4 with an adaptive mode of --b-adapt 2 allowed the encoder to find the absolute most efficient way to track fast-moving objects.
HEVC struggles dynamically with dark areas and bright scenes. RARBG used --aq-mode 3 (Auto-Variance with Bias to dark scenes) combined with aq-strength 1.00 . This tells the encoder to steal precious bits away from bright, highly-detailed areas (where the human eye won't notice minor compression artifacts) and allocate them directly to dark shadows, virtually eliminating blocky artifacting in night scenes. 4. Disabling SAO ( --no-sao )
Missing RARBG x265 1080p encodes so much... any alternatives?