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Re: Capture and multi-core Started by EngrCgd at 06-10-2009 21:18. Topic has 3 replies. LEAD Support Fo... » Enduser » Capture & Conve... » Re: Capture and multi-core

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06-10-2009, 21:18 EngrCgd Joined on 02-25-2009 Posts 3 Capture and multi-core Does the capture object take advantage of multiple core CPUs when compressing and saving video? Will it run faster on muti-core CPUs?    Report

06-11-2009, 10:28 Adam Boulad Joined on 09-16-2007 Posts 1,129 Re: Capture and multi-core Usually, the most processor-intensive part when capturing is video compression. The ability to make use of multiple processors or cores depends on the compressor being used. For example, our LEAD MPEG-2 Encoder can make use of up to 4 processors in 4 processing threads to optimize performance. Adam Boulad LEADTOOLS Technical Support    Report

06-11-2009, 13:36 EngrCgd Joined on 02-25-2009 Posts 3 Re: Capture and multi-core If I am capturing from multiple cameras using multiple capture objects in C++ and using a non-Lead compressor. Is each capture or compressor running in its own thread or should I create a thread for each capture?    Report

06-14-2009, 14:06 Adam Boulad Joined on 09-16-2007 Posts 1,129 Re: Capture and multi-core There are different factors affecting this. When you perform a typical capture operation, many objects are involved internally, not just compressors, and some of them create and terminate their own threads. Normally with multiple cores present, these threads will be divided on the existing cores by the OS. I'm not sure if our capture control itself creates a 'main' thread for itself, but even if it doesn't, when you have 2 controls performing simultaneous capture, you can be sure that the OS will split the work between available CPUs to some degree. In short, I do not expect performance to gain much if you add specific code to create a separate thread for each capture process. Adam Boulad LEADTOOLS Technical Support    Report

LEAD Support Fo... » Enduser » Capture & Conve... » Re: Capture and multi-core

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