other hardware accelerated video processing solutions and invite you to evaluate yourself. We believe Intel HW+Media SDK is very competitive vs. QuickSync is easy to set up and get going, but wont always provide ideal quality. What encoder you actually end up using is up to you. There are internal evaluations but nothing in publishable form yet. NVENC on Maxwell and Pascal almost matches x264 veryfast (or if you use low latency vbr 2pass then it actually surpasses it at times). PSNR/SSIM and other quality metrics can help but there is no substitute for golden eyes.Īs you may guess from these details competitive performance and quality is very important. In today's video I compare all of the major streaming encoders - X264 vs NVENC vs AMF/VCE vs QuickSync and show you which encoder performs. An important tip for comparing quality is to look at the bitrate actually achieved, not just what was requested. Sample_multi_transcode par files can be set up with multiple lines to start multiple sessions simultaneously.įor PSNR/SSIM quality comparisons there are many options but one of my favorites is the psnr tool in libyuv. Looking around this subreddit, it seems many people favor nvidia GPU transcoding so I am. The decoding process will still use your CPU. The post details some of the issues with NVENC transcoding most notably that, the encoding process will use your GPU. Transcode is a better test for hardware capabilities because encode and decode by themselves have significant raw I/O overhead. Which strongly encourages the use of Intel’s Quick Sync instead of Nvidia’s NVENC. Performance numbers for Media SDK can be obtained easily from its samples. Standard quality comparisons like PSNR or SSIM have many limitations so "better" may be best left to your evaluation. Intel® Quick Sync Video uses the dedicated media processing capabilities of Intel® Graphics Technology to decode and encode fast, enabling the processor to complete other tasks and improving system responsiveness. This link may help with some of the data you're looking for: Īs you know, performance and quality comparisons are tightly coupled.
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