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| fvisagie |
| Posted: Aug 6 2012, 12:04 PM |
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Advanced Member
Group: Members
Posts: 35
Member No.: 26033
Joined: 19-August 09
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Hi All,
I'm looking for a filter to decimate a video stream (by 2 in this case). I realise it's possible to involve AviSynth's SelectEvery() or to frameserve intermediate footage for the next VirtualDub to decimate during input. However, using a filter would just be so much more elegant and quicker to set up, but I haven't been able to find one.
Is there a decimate filter you can recommend?
Alternatively, I've managed to achieve the required framerate with Interpolate (Scale frame rate by 0.5 and Nearest frame (duplicate)). Although unintentional, is this usage safe or can quality get butchered somewhere?
Thanks,
Francois |
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| dloneranger |
| Posted: Aug 6 2012, 12:54 PM |
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Moderator
Group: Moderators
Posts: 2366
Member No.: 22158
Joined: 26-September 07
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Just a simple decimate?
There's a reason you haven't found a filter for it, that's because it's built in ;-)
Look on the video menu->frame rate
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MultiAdjust JoinWav WavNormalize FFMPeg Input Plugin v1827 UnSharpMask
Windows7/8 Codec Chooser
All FccHandlers Stuff inc. Installers for acm codecs AAC, AC3, LameMp3 |
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| fvisagie |
| Posted: Aug 6 2012, 02:15 PM |
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Advanced Member
Group: Members
Posts: 35
Member No.: 26033
Joined: 19-August 09
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Oh, now I see on the Status Bar it's applied to the finished AVI, he!
I was looking for something to apply after the last filter and this is indeed it, thanks. |
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| jpsdr |
| Posted: Aug 7 2012, 07:16 AM |
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Advanced Member
Group: Members
Posts: 335
Member No.: 20490
Joined: 23-December 06
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Warning :
I'll not be so sure it's applied after the last filter, i think it's applied before chain filter, but frame rate change is not showed in the information filter.
Nevertheless, even if it's applied on the end, any decimating filter will have effect even on filters before them.
See here : http://forums.virtualdub.org/index.php?act...=ST&f=7&t=20651
for more information on this. |
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