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Hardware-accelerated video transcoding under the microscope

crookedvulture (1866146) writes | about 2 years ago

Graphics 0

crookedvulture writes "For years, AMD, Intel, and Nvidia have hyped the hardware-accelerated video transcoding capabilities of their CPUs and GPUs. Some implementations use dedicated logic, while others leverage the arrays of shader processors in modern graphics chips. Turns out all this hardware-accelerated mojo may be no better than old-school software transcoding. This look at video transcoding on the PC provides a detailed comparison of the latest solutions, and software transcoding consistently produces the highest-quality results. If you can live with artifacts, the QuickSync logic built into Intel's recent CPUs is easily the fastest of the hardware-accelerated solutions, though the output quality varies widely with the software used. A beta version of the hardware-accelerated x264 encoder produces consistently good results on multiple hardware configurations, but it's not much faster than pure software transcoding on a modern CPU."
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