Supercharge your x265 encoding with Ultraziq
Ultraziq enhances opensource x265 performance, enabling more live channels and superior efficiency. Experience the next generation of video encoding today.
Next-Generation HEVC Encoding with x265
Experience exceptional video quality at lower bitrates with the world's most popular H.265 encoder. Delivering exceptional compression efficiency for 4K, 8K, HDR Workflows.
Professional Features
x265 is the industry-leading HEVC encoder, offering cutting-edge technical capabilities for modern broadcast, streaming, and archival workflows.
50% Enhanced Efficiency
Delivers the same quality at half the bitrate of H.264, significantly saving bandwidth and storage costs.
x86 & ARM Optimized
Optimized for Intel x86 and ARM architectures, maximizing encoding performance across all hardware.
Multi-Processor Support
x265 supports Intel x86 and ARM architectures,maximizing encoding efficiency and performance for the modern age
Dolby Vision & HDR
Supports for HDR10, HDR10+, and Dolby Vision for video streaming applications.
Alpha Channel Feature
Supports video encoding with transparency, supporting overlays and compositing while preserving high efficiency.
MV-HEVC (Multi-View)
Supports advanced Multi-View HEVC (MV-HEVC) for efficient encoding of 3D content and multi-camera perspectives..
Screen Content Coding
Optimized SCC tools for crystal-clear encoding of computer interfaces, presentations, and screen shares.
Film Grain Synthesis
Preserves cinematic textures while maintaining high compression ratios through advanced modeling.
ABR Ladder & Rate Control
Supports ABR Ladders and Segment Based Rate Control for precision OTT and multi-channel streaming.
Workflow Integration
Assembly Optimized Kernels Hand-tuned for various SIMD instruction sets (SSE2, SSE3, AVX, AVX2, AVX512, SVE, SVE2, NEON), Threaded WPP (Wavefront Parallel Processing)
Targeted OTT Solutions
Color Depth: 8-bit,10-bit,12-bit,upto 16-bit Color Space: YCbCr (4:2:0, 4:2:2, 4:4:4)
Commercial Licenses
Commercial licensing and dedicated support available for enterprise deployments.
x265 Use Cases
From global streaming architectures to professional production studios, x265 is the trusted standard for high-performance HEVC encoding.
OTT Streaming
Deliver premium 4K and 8K content to global audiences with up to 50% bandwidth savings. Optimized for VOD and Live streaming platforms.
Multi-channel TV
Power modern broadcast workflows with high-efficiency encoding for terrestrial, satellite, and cable television distributions.
Storage & Transmission
Maximize storage density and transmission efficiency for large-scale video archives and content delivery networks.
Live Broadcasting
Real-time HEVC encoding solutions for high-stakes live events, ensuring low latency and maximum visual stability.
Mobile Video
Optimize delivery for mobile networks with adaptive bitrate streaming that maintains quality across varying conditions.
Professional Post-Production
Integrate with high-fidelity workflows requiring 10-bit and 12-bit precision, wide color gamut, and HDR metadata.
Visual Quality Comparison
Comparison Picture: Slide to reveal clarity and details.
To demonstrate the difference, we encoded image using the
x264(AVC) and x265(HEVC) encoder at the same bitrate (5 Kbps).
x265 (HEVC)
x264 (AVC)
Same Bitrate
Both encodings use identical bitrates for a fair comparison
Better Quality
x265 preserves more detail and clarity at the same bitrate
50% Savings
Achieve the same quality as x264 with half the bitrate
$ ultraziq --input video.y4m
# Optimizing x265 pipeline...
>> Speedup: +20%
>> Efficiency: High
>> Cost: -50%20% Faster
News & Insights
Explore the latest updates, industry breakthroughs, and technical insights from the x265 project.
Contact Us
Have questions about x265? Want to integrate it into your workflow? Get in touch with our team.