I have a 1600x1200 4Mbps H264 video stream. When I use the sample_decoder.exe from MediaSDK 2012 to decode this video file, and add the "-hw" switch to the command line, decoding is still dispatched to the CPU software (according to GPA Media Performance window). I even checked by MFXQueryIMPL and it returns MFX_IMPL_HARDWARE. If I play this video file in media player, I can see in GPA that it's decoded by GPU HW. If I use sample_decoder.exe on a smaller video (e.g. 1920x1088), it's scheduled to GPU.
Doesn't MediaSDK support hw decoding of large frame size?Since media player can use GPU HW, how to enforce hw decoding of this video stream in MediaSDK?
Hardware accelerated encoding/decoding supports levels up to 4.2. As a consequence of this is the limitation defined by standards for the maximum bitrate, resolution and framerate, in this case the resolution islimitedby 1920x1088 (HD).
Are you saying you cannot encode/decode stream using AVC levels above 4.2? If so, I would suggest revisiting the set of parameters you use. For instance, AVC profile High with level 5.0 and 5.1 does work fine with HW acceleration.