Originally Posted by Knight026
Here is what I observed after some fiddling
For EVR, the CPU started at about 97% and stayed in the 90s. It was highly variable going from 80%-97%. The GPU was ~30%. The weird thing was that after about 5 minutes the CPU settled at around 85% and the GPU settled between 25%-30%.
For EVR Custom Preset, it seemed to stay within the same range. 95% for the CPU and 35% for the GPU.
For EVR Sync, GPU started off about 32% and CPU probably averaged 90%. However, after a few skipped frames the picture froze and GPU dropped to 11%.
I’m guessing the Resizer option places more work on the CPU as opposed to the GPU. The best option here was regular EVR. I do however get mixed results on different runs as I’m testing them all. I did experience audio out of sync problems with all of these options and on a few occasions, I got glitches like the video kept playing even though I pressed pause or the picture would freeze.
I also tried VMR-7 and it took up less CPU and GPU that the EVR options, however, once the audio got out of sync, that was it. Pausing didn’t sync it.
CPU usage >= 90% with a single core 2.7GHz means that hardware decode acceleration is not
working, that would cause all sorts of playback glitches in such a weak system. Typical CPU and GPU usage at 1080p24 AVC playback with a single core 2.8GHz:
The system used:
- Athlon II X4 630 2.8GHz with 3 cores disabled
- AMD 880G
- DDR3-1333 2 x 2GB
- HD 4250 (onboard video) with 512MB shared memory
- AMD 11.9 graphics driver
- MPC HomeCinema, LAV Splitter Source + Microsoft DTV-DVD Video Decoder + EVR (or EVR CP or EVR Sync, it does not matter)
- Clip: Iron Man (2008) [2 min HD film MKV].mkv
(1080p24, AVC, TrueHD/AC-3)
Resizer is irrelevant here, resizing is done by GPU too.
Another clip: La Traviata (2010) [2 min HD i video MKV].mkv
(1080i60, AVC, DTS-HD MA)
GPU is completely taxed because of deinterlacing and even if "Enforce Smooth Video Playback" is on, there is still a dropped frame every ~10 seconds. HD 42xx iGPU is too weak for interlaced contents.