Complex sentence: The specification was originally designed by Intel for its GMA (Graphics Media Accelerator) series of GPU hardware, the API is however not limited to GPUs or Intel specific hardware, as other hardware and manufacturers can also freely use this API for hardware accelerated video decoding.
Split into simpler sentences: The specification was originally designed by Intel for its GMA (Graphics Media Accelerator) series of GPU hardware. However, the API is not limited to GPUs or Intel specific hardware, as other hardware and manufacturers can also freely use this API for hardware accelerated video decoding.