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| smozoma |
| Posted: Jul 8 2003, 07:42 AM |
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I'd like to see a slow motion option introduced.. It's the opposite of decimating frames.. just duplicate the frames..
I have no idea how to do this, though. If someone could do that and release the code.. that'd be great..
Would simply duplicating the frames create any problems with the file?
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| bigplac |
| Posted: Jul 10 2003, 02:23 PM |
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Good idea.
But if your video souce is interlaced, there are many filters that generate 2/1 slow motion effect in virtualdub.
I don't know what the result is if video source isn't interlaced.
Example: http://shelob.mordor.net/dgraft/bob.html |
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| phaeron |
| Posted: Jul 11 2003, 03:10 AM |
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Virtualdub Developer
Group: Administrator
Posts: 7773
Member No.: 61
Joined: 30-July 02
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You can already do this in 1.5.4 -- use the "convert to fps" option and specify a higher frame rate than your original source. Then take the output, load it back in, and use the "change fps" option to make the video run in slow motion. This will work in Direct mode too -- VirtualDub inserts zero-byte (drop) frames in this case so it is very fast.
Audio is a trickier problem. You have two basic choices here: use the pitch shifter (not recommended since it introduces clicks/pops), or use the stretcher and live with the pitch scaling effect. The third option is to reprocess the audio in a real sound editor that does quality pitch shifting / time stretching.
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| smozoma |
| Posted: Jul 12 2003, 05:22 PM |
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Oh, cool, thanks.
Hm.. the audio.. I take it the audio filters don't allow you to slow something down 4 times? (let alone 8 times.. I'm trying to slow down some table hockey action : P. I need to get a 60fps-capable webcam!) It just beeps at me when i try to enter 4, either for the stretch or the pitch shift.
I don't really mind the clicks/pops too much, i guess |
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