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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000200||madVR||bug||public||2014-04-24 22:20||2015-03-27 13:38|
|Status||closed||Resolution||no change required|
|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.|
|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)|
|DXVA2 Scaling Active||no|
|Aero / Desktop Composition||On|
|Problem occurs with mode||all modes|
|GPU Driver Version||327.23|
|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.|
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.
|I can't reproduce that here. Have you tried increasing the queue sizes? Does that not help?|
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).
|Ok, thanks. So I'll close this bug report.|
|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|
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