using the "CUDA Video Decoder GL" SDK sample to decode high resolution video

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,
I am using the ‘CUDA Video Decoder GL’ SDK sample to decode a H.264 video and display it. I am running Windows 7 with GTX590 & I have cuda toolkit 4 installed.
When I try decoding a 1920x1080 H.264 video, everything works fine, and I can see the video displayed.
However, when I try decoding a 4096x2160 H.264 video, the cuvidCreateVideo(…) function returns CUDA_ERROR_NO_DEVICE which causes a crash.

Obviously, there is no problem with the device, since I am able to decode the smaller video. I also know the GPU is capable of decoding the 4096*2160 movie, since Media Player Classic plays it smoothly.

so why can’t I decode the large movie with the sample API?

Any insight would be greatly appreciated.
Thanks,
Aliza

2

are you able to trace which line throws the error? If you can track down where exactly it’s failing it’d be a good first step

3

The error occurs at the VideoDecoder constructor, second to last line (line 80). There is a call to cuvidCreateDecoder(…) which returns CUDA_ERROR_NO_DEVICE.

4

nvcuvid only supports videos up to 2032x2048 or 2 million pixels, whichever comes first. The actual limitations are 127 horizontal by 128 vertical macroblocks, up to 8190 total macroblocks.