You can use Media Server Studio samples to run benchmarks using hw acceleration. We have samples for various common use cases like encoding/decoding/transcoding/video processing in this package which can be run to check performance. VLC is not configured to use hw acceleration provided through Intel Media Server Studio.
Here is the link where you can find the package to the package - https://software.intel.com/en-us/intel-media-server-studio-support/code-samples. For any additional documentation like user guides & manual, check this page - https://software.intel.com/en-us/intel-media-server-studio-support/documentation.
This forum answer any queries related to OpenCL not Media related, due to which it took us a while to reply here.
If you have any further queries about the Media product please post your queries on Media forum.