View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000200 | madVR | bug | public | 2014-04-24 22:20 | 2015-03-27 13:38 |
| Reporter | Soukyuu | Assigned To | madshi | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | no change required | ||
| Platform | pc | OS | windows | OS Version | 8.1u1 |
| Summary | 0000200: Smooth motion jerky on fade with "present several frames in advance" active | ||||
| Description | The only reason I noticed it is that now we have "present several frames in advance" in windowed mode also... I first thought it was the source, but once I watched some older series I knew there was definitely something wrong as there were no such skips previously. I have tried increasing GPU buffers, but it doesn't help, nor do I see any queues dropping to 0. Also no dropped frames. Not knowing the code, it seems like "present several frames in advance" clashes with "re-render if fade detected". | ||||
| Steps To Reproduce | A sample file is here: http://www.nyaa.se/?page=view&tid=546769 - disable "don't re-render frames when fade detected" - enable "present several frames in advance" - launch the file and skip to the ending (chapter E) -> video is jerky at fades between the scenes (most notable @21:55 @22:28 @22:45) - either enable "don't re-render frames..." or disable "present several frames in advance" -> no more jerky transitions | ||||
| Additional Information | - 0.87.0 = no issue in both windowed and exclusive modes - 0.87.1 .. 0.87.9 = no issue in windowed mode, jerky fades in exclusive. - 0.87.10 = jerky fades in both windowed and exclusive. Overlay mode is fine btw, only non-overlay and exclusive are affected. | ||||
| Tags | No tags attached. | ||||
| madVR Version | 0.87.10 | ||||
| Media Player (with version info) | mpc-hc 1.7.4 | ||||
| Splitter (with version info) | internal LAV (0.61.2.0) | ||||
| Decoder (with version info) | internal LAV (0.61.2.0) | ||||
| Decoding | Software | ||||
| Deinterlacing | none (progressive) | ||||
| DXVA2 Scaling Active | no | ||||
| Aero / Desktop Composition | On | ||||
| Problem occurs with mode | all modes | ||||
| GPU Manufacturer | NVidia | ||||
| GPU Model | 260GTX | ||||
| GPU Driver Version | 327.23 | ||||
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This can happen if the GPU queues are too small. I guess the default settings are rather conservative. If you want to use Smooth Motion FRC and debanding, and if you want madVR to re-render frames when a fade is detected, then increasing the GPU queue size should help get rid of the jerky fade. E.g. try increasing the GPU queue size from 8 to 12. |
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It's not a stuttering per se, the queues don't drop (at least in the OSD). It's as if the clip gets visibly re-winded a few frames back, then plays again. So instead of 1 2 3 4 5 it plays 1 2 3 1 2 3 4 5 3 probably being the frame it detects as a fade. |
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I can't reproduce that here. Have you tried increasing the queue sizes? Does that not help? |
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Sorry, I'm not using windows lately, so it took a while to look at it. It looks like the issue has solved itself. Might have been a driver related bug, or some stale config options, but I now don't have the behavior anymore. I even reduced the queues to 4 and it still doesn't happen (if it was a queue issue at all). |
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Ok, thanks. So I'll close this bug report. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2014-04-24 22:20 | Soukyuu | New Issue | |
| 2014-04-24 23:37 | madshi | Assigned To | => madshi |
| 2014-04-24 23:37 | madshi | Status | new => assigned |
| 2015-03-22 12:24 | madshi | Note Added: 0000801 | |
| 2015-03-22 12:24 | madshi | Status | assigned => feedback |
| 2015-03-23 23:53 | Soukyuu | Note Added: 0000850 | |
| 2015-03-23 23:53 | Soukyuu | Status | feedback => assigned |
| 2015-03-24 08:59 | madshi | Note Added: 0000852 | |
| 2015-03-24 08:59 | madshi | Status | assigned => feedback |
| 2015-03-27 13:33 | Soukyuu | Note Added: 0000871 | |
| 2015-03-27 13:33 | Soukyuu | Status | feedback => assigned |
| 2015-03-27 13:38 | madshi | Note Added: 0000872 | |
| 2015-03-27 13:38 | madshi | Status | assigned => closed |
| 2015-03-27 13:38 | madshi | Resolution | open => fixed |
| 2015-03-27 13:38 | madshi | Resolution | fixed => no change required |
