Here is a screenshot :
On the right the result with internal deinterlace.
On the left the result with msu deinterlace.
Look at the face of the 2 grils at center there is some strange pixels.
What could be the reason?
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| Unofficial VirtualDub Support Forums > VirtualDub Filters and Filter Development > Pb With Msu Deinterlace Filter |
| Posted by: ihope Jul 16 2014, 04:52 PM |
| When i use the MSU deinterlace filter i have strange color on the screen. Here is a screenshot : On the right the result with internal deinterlace. On the left the result with msu deinterlace. Look at the face of the 2 grils at center there is some strange pixels. What could be the reason? |
| Posted by: dloneranger Jul 16 2014, 05:52 PM |
| The MSU filters are well known to be problematic Three things to try With the filter selected in the filter list dialog, click the 'options' button and tick 'force single framebuffer' Before the msu filter, crop or resize so that the video's width and height are a multiple of 8 Before the msu filter, change the format - try yuv444 or rgb32 If either/all of those don't help then you're out of luck |
| Posted by: ihope Jul 16 2014, 06:07 PM |
| Thank you is now correct with force single frame !!! |
| Posted by: ihope Jul 16 2014, 06:30 PM |
| In fact i try to obtain in virtual dub the same result as QTGMC to restore old video. I'm using MSU deinterlace with neat video denoiser (demo) and the result is very good except one point. On the left is QTGMC result and on the right is VDub with MSU + Neat  If you look at the outline of the people or the text date is not good compared to QTGMC. Does TGMC use additional filter (anti-aliasing?) to have this result? All informatiosn would be appreciate ! |
| Posted by: dloneranger Jul 16 2014, 07:28 PM |
| Looks like virtualdubs deinterlace set to blend fields Or you could try 'field bob' and play with the settings [edit] That QTGMC does a lot more than just deinterlace from it's list of plugins used Core plugins - MVTools2 - MaskTools v2 - NNEDI3 - RemoveGrain + Repair - SSE2Tools Additional plugins depending on settings - [NNEDI2, NNEDI, EEDI3, EEDI2, TDeInt] - Yadif - VerticalCleaner - AddGrainC - FFT3DFilter - dfttest |
| Posted by: ihope Jul 16 2014, 08:26 PM |
| Filters settings are correct. I try with other deinterlacer/denoiser and i have the same result. I dont know what QTGMC do to have this result ... I read the doc but i dont find :-( |
| Posted by: ihope Jul 18 2014, 06:10 PM |
| I find the reason ! Is because the H264 compression. When I compare the source (just after the denoiser and the deinterlace) and the output i see the difference. This (anti-aliasing?) is applied by the H264 encoder. Strange but useful ! |