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Question: So why does checking 'Fast Video Rendering' using .m2ts not work correctly with my Radeon HD7870? Just curious since unchecking that seems to still use the video card anyway.
I'm not sure on your HD7870 question, I don't have any to test, monitor and gain experience so I'd only be guessing with no verification. As I indicated in previous post, my guess is it maybe just PD variable bitrate encoding at play.
I'm not sure I totaly understand your "First time" and "Second render" exact settings. Specifically, what was the HA options in pref (particularly OpenCL setting just leave decode setting unchecked for ease) set to and what was "Fast video rendering" set to on Produce page. Since you have a 4770k and HD7870 it also depends signficantly on what was done there, we have had the GPGPU discsions many times. Was the Intel HD4600 disabled in BIOS? If your HD4600 was disabled one really has 4 options:
1) Pref OpenCL checked, Produce Fast video rendering checked
2) Pref OpenCL checked, Produce Fast video rendering unchecked (was this "First time"?)
3) Pref OpenCL unchecked, Produce Fast video rendering checked (was this "Second render"?)
4) Pref OpenCL unchecked, Produce Fast video rendering unchecked
All items above do something slightly different as far as transfering load between CPU and GPU for this video effects sample test. The difference was explained here
http://forum.cyberlink.com/forum/posts/list/40407.page in post 28/09/2014 09:30:58
Items 1-3 will all use the GPU to some degree, attached are two pics that show my GTX970 can be totaly unloaded during this encode process (item 4 above) and on a second box that has a HD4000, it to can be totally unloaded (item 4 above).
Jeff
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HD4000.png |
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HD4000 unloaded |
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642 Kbytes
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63 time(s) |
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GPU_load_NO.png |
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Description |
GTX970 unloaded |
Filesize |
543 Kbytes
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Downloaded: |
57 time(s) |