Doom9's Forum - View Single Post - madVR - high quality video renderer (GPU assisted)

Ede_123 · 28th May 2011, 14:21

Hi all,

I found multiple posts in this thread concerning high DPC latency when using madVR, but I think nobody really found the cause of this problem and a solution was never found.

I'm also facing this problem and it effectively renders madVR useless, because the high latency leads to crackling noises in the audio occuring every few seconds.

I tried to analyze the problem with "DPC Lateny Checker":
- My notebook's idle latency is about 150 us (microseconds)
- When watching a movie with MPC-HC using EVR / Haali Renderer the latency stays more or less the same (maybe a little higher due to CPU/GPU load)
- Watching a movie with MPC-HC using madVR is always resulting in a latency of about 2000 us (quite constantly) with huge peaks reaching to about 45000 us (this seems to be when the crackling in the audio occurs)
- when starting MPC-HC and doing nothing (do not resize the window so it is displayed 1:1) latency keeps normal and rises after ~15-20s, when starting MPC-HC and going into (non-exclusive) fullscreen latency keeps normal and rises after ~10s, when starting MPC-HC and going into (exclusive) fullscreen latency rises almost instantly.

My current system configuration:
- Windows 7 32bit
- ATI Mobility Radeon HD3470
- madVR v0.62
- MPC-HC 1.5.2.3107

I would be great if anybody could help me with this and locate the cause of the problem, since I love piture quality obtained with madVR. Clicking sound is a no-go though.
If you need further informations don't hesitate to ask.

28th May 2011, 14:21	#7812 \| Link
Ede_123 Registered User Join Date: Nov 2010 Posts: 4	High DPC latency using madVR with MPC-HC Hi all, I found multiple posts in this thread concerning high DPC latency when using madVR, but I think nobody really found the cause of this problem and a solution was never found. I'm also facing this problem and it effectively renders madVR useless, because the high latency leads to crackling noises in the audio occuring every few seconds. I tried to analyze the problem with "DPC Lateny Checker": - My notebook's idle latency is about 150 us (microseconds) - When watching a movie with MPC-HC using EVR / Haali Renderer the latency stays more or less the same (maybe a little higher due to CPU/GPU load) - Watching a movie with MPC-HC using madVR is always resulting in a latency of about 2000 us (quite constantly) with huge peaks reaching to about 45000 us (this seems to be when the crackling in the audio occurs) - when starting MPC-HC and doing nothing (do not resize the window so it is displayed 1:1) latency keeps normal and rises after ~15-20s, when starting MPC-HC and going into (non-exclusive) fullscreen latency keeps normal and rises after ~10s, when starting MPC-HC and going into (exclusive) fullscreen latency rises almost instantly. My current system configuration: - Windows 7 32bit - ATI Mobility Radeon HD3470 - madVR v0.62 - MPC-HC 1.5.2.3107 I would be great if anybody could help me with this and locate the cause of the problem, since I love piture quality obtained with madVR. Clicking sound is a no-go though. If you need further informations don't hesitate to ask.