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Looks like you are also getting the smaller file sizes for the 3_3_wall when using CPU only - I was wondering if it was only my computer - looks like that is "normal" also.
Yes, a little strange to me, CPU encoding overall rather good at meeting bitrate. Funny the issue occurs with Gaussian Blur, the effect in the original 3_3_wall.pds. That effect often used in photo and video editing to mask effects of jagged edges, especially of straight lines, when going to DVD type output. A tiny bit, based on original frame size, often hides things very well without a significant sacrifice on clarity. I film a lot of indoor court sports and often deal with jagged court lines as camera pans. I currently run everything through a third party editor to add just a little Gaussian Blur and it does wonders for DVD type productions out of my higher resolution source.
Even if you use a 1920x1080 24Mbps source, PD13 with Gaussian Blur effect applied will downgrade the output bitrate, it's not just a Boats.wmv effect. The downgrade in bitrate is a function of how much Gaussian Blur is applied.
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No matter which computer, the NB Fx's are demanding/using/ sucking out lots of power, in PD as well as in another editor I have. Back in September / October, I posted something about it:
Yes, same effect you noted earlier I believe. Based on the CPU load profile in PD with certain effects, to me likely a coding implementation issue, but you indicate the same with another editor so maybe NB effect issue. Needs some attention as not real practical to use at this point.
Some else asked me if I would describe the loads a little better and what was done and what's really in the previous table. The chart attached shows loadings for the GTX650 with OpenCL and HVE settings applied and the Beating FX being evaluated. It's a good effect to understand as it's an OpenCL accelerated effect which PD denotes with the GPU icon in left corner of effect.
Recent Nvidia cards (GTX600's and newer) have a Integrated encoder for certain video formats on the card. GPU-Z shows both this VE load and the GPU load. VE performance indicator for HVE encoding and GPU for OpenCL effect crunching. The basic effect of this is simply to distribute load around a little for faster encoding, hardware dependent. One obviously would like to maintain quality. Older Nvida cards only had a CUDA encoder so load would show on the GPU stats, no VE. Earlier PD13 versions didn't support the VE encoding, only CUDA. When one unchecks the OpenCL in pref, the GPU will unload as the CPU now does that task as well so it will load up more or the encode process will simply take longer, very hardware dependent which will work best.
Recent AMD cards (HD7900 and newer) are somewhat similar, except their Integrated encoder is VCE (Video Coding Engine). To my knowledge they don't currently offer a VCE performance monitor, only a GPU load monitor. GPU-Z will only show GPU load, so if using HVE encoding on AMD card it's hard to monitor that load with GPU-Z as it's not represented in GPU load as the onboard VCE is doing the work. I looked around some but never found a VE load monitor like Nvidia supports. Intel HDxxxx somewhat similar, there everything lumps in GPU load stats.
Tony, optodata, thanks, this type of stuff not up everyone’s alley but some enjoy! Many valued contributors on the forum.
Jeff
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Load history chart |
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