New Mac Pro (6 core, d500 cards, 32GB RAM, OSX10.9.4). Adobe Media Encoder CC 2014.0.1. Tested on two separate machines of the same configuration.
I have a just over 2 hour long 1080p ProRes file that I was encoding to MPEG2 for DVD. During QC of the disc, a random frame from another part of the movie was found in a spot about 39 minutes into the encode. The issue was in the encoded MPEG2 stream.
The client also wanted a lower resolution h264 proof of the video, and that was encoded on the same machine at a separate time. That had the same random frame at the exact same spot.
I encoded the preview h264 in just a few minute segment of the video around the glitch on the second Mac Pro. It showed up again. I used the same setting but turned off GPU Acceleration, and the frame is gone.
Does anyone have any ideas as to what is going on here? Obviously there is a problem with GPU acceleration on the new Mac Pro's with Media Encoder, but what could be specifically causing it and what could be done to fix this? With all of the issues in Premiere and After Effects, some of which are being caused by software updates, and the issues with the one Mac Pro needing to be replaced due to bad video cards, I feel like there is just a ton of problems that didn't exist on our outdated Mac Pro with Final Cut Pro 7.
Please let me know of any ideas to make me not doubt every encode I do on these machines with GPU Acceleration turned on. Thanks.
-Phil