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Earlier this week the Cyberlink engineers fixed the problems on my pc. They told me that they have no control on the AMD 15.x drivers which caused all these problems. There is a AMD Issue Reporting form for users to fill out near the bottom here: http://support.amd.com/en-us/download# .
It may help for the next AMD driver update if enough users fill in the forms. Do hope that HA is fixed on PD14 when it goes on sale.
What did they do to fix?
My guess this is the same basic issue that occurred for Nvidia cards and PD, CUDA vs NVENC based encoding. I don't think PD13 really supports AMD (Video Coding Engine) VCE, instead my guess is it maybe uses the older tech Accelerated Video Transcoding (AVT) which has been removed from AMD 15.7 drivers and all future drivers as the software is at end of life. Similar approach Nvidia took for 340.43 and later drivers with CUDA encoding. I won’t point fingers to who’s at fault, however, both of these competing newer GPU technologies are on the order of 3+yrs old.
One can pull the older AVT installer from 14.12 WHQL drivers and use in 15.7, is that what was done to "fix" the 15.x drivers? This hacked approach not really recommended, at least by me. It works on a AMD card I threw in to test, but probably not robust over the long haul. The approach very similar to the hack that was used for Nvidia cards, also not recommended as a real fix and actually was very short lived as not supported in current PD13 version.
CL updated PD13 at a patch level release to make parts of encoding compatible with newer Nvidia NVENC encoder. Will CL do the same for AMD GPU users and PD13. Maybe, but PD13 doors are pretty much shut as PD14 is around the corner which was rumored to support H.265 encoding which would need the updated GPU encoding technology anyhow.
Jeff